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1579 lines
49 KiB
1579 lines
49 KiB
#*************************************************************************** |
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# |
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# Copyright (C) 2009-2012 by Daniel Stenberg et al |
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# |
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# Permission to use, copy, modify, and distribute this software and its |
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# documentation for any purpose and without fee is hereby granted, provided |
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# that the above copyright notice appear in all copies and that both that |
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# copyright notice and this permission notice appear in supporting |
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# documentation, and that the name of M.I.T. not be used in advertising or |
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# publicity pertaining to distribution of the software without specific, |
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# written prior permission. M.I.T. makes no representations about the |
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# suitability of this software for any purpose. It is provided "as is" |
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# without express or implied warranty. |
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# |
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#*************************************************************************** |
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# File version for 'aclocal' use. Keep it a single number. |
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# serial 69 |
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dnl CARES_CHECK_COMPILER |
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dnl ------------------------------------------------- |
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dnl Verify if the C compiler being used is known. |
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AC_DEFUN([CARES_CHECK_COMPILER], [ |
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AC_BEFORE([$0],[CARES_CHECK_NO_UNDEFINED])dnl |
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# |
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compiler_id="unknown" |
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compiler_num="0" |
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# |
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flags_dbg_all="unknown" |
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flags_dbg_yes="unknown" |
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flags_dbg_off="unknown" |
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flags_opt_all="unknown" |
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flags_opt_yes="unknown" |
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flags_opt_off="unknown" |
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# |
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flags_prefer_cppflags="no" |
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# |
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CARES_CHECK_COMPILER_DEC_C |
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CARES_CHECK_COMPILER_HPUX_C |
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CARES_CHECK_COMPILER_IBM_C |
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CARES_CHECK_COMPILER_INTEL_C |
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CARES_CHECK_COMPILER_CLANG |
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CARES_CHECK_COMPILER_GNU_C |
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CARES_CHECK_COMPILER_LCC |
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CARES_CHECK_COMPILER_SGI_MIPSPRO_C |
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CARES_CHECK_COMPILER_SGI_MIPS_C |
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CARES_CHECK_COMPILER_SUNPRO_C |
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CARES_CHECK_COMPILER_TINY_C |
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CARES_CHECK_COMPILER_WATCOM_C |
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# |
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if test "$compiler_id" = "unknown"; then |
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cat <<_EOF 1>&2 |
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*** |
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*** Warning: This configure script does not have information about the |
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*** compiler you are using, relative to the flags required to enable or |
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*** disable generation of debug info, optimization options or warnings. |
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*** |
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*** Whatever settings are present in CFLAGS will be used for this run. |
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*** |
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*** If you wish to help the c-ares project to better support your compiler |
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*** you can report this and the required info on the c-ares development |
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*** mailing list: http://cool.haxx.se/mailman/listinfo/c-ares/ |
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*** |
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_EOF |
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fi |
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]) |
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dnl CARES_CHECK_COMPILER_CLANG |
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dnl ------------------------------------------------- |
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dnl Verify if compiler being used is clang. |
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|
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AC_DEFUN([CARES_CHECK_COMPILER_CLANG], [ |
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AC_BEFORE([$0],[CARES_CHECK_COMPILER_GNU_C])dnl |
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AC_MSG_CHECKING([if compiler is clang]) |
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CURL_CHECK_DEF([__clang__], [], [silent]) |
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if test "$curl_cv_have_def___clang__" = "yes"; then |
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AC_MSG_RESULT([yes]) |
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compiler_id="CLANG" |
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clangver=`$CC -dumpversion` |
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clangvhi=`echo $clangver | cut -d . -f1` |
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clangvlo=`echo $clangver | cut -d . -f2` |
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compiler_num=`(expr $clangvhi "*" 100 + $clangvlo) 2>/dev/null` |
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flags_dbg_all="-g -g0 -g1 -g2 -g3" |
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flags_dbg_all="$flags_dbg_all -ggdb" |
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flags_dbg_all="$flags_dbg_all -gstabs" |
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flags_dbg_all="$flags_dbg_all -gstabs+" |
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flags_dbg_all="$flags_dbg_all -gcoff" |
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flags_dbg_all="$flags_dbg_all -gxcoff" |
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flags_dbg_all="$flags_dbg_all -gdwarf-2" |
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flags_dbg_all="$flags_dbg_all -gvms" |
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flags_dbg_yes="-g" |
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flags_dbg_off="-g0" |
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flags_opt_all="-O -O0 -O1 -O2 -Os -O3 -O4" |
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flags_opt_yes="-Os" |
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flags_opt_off="-O0" |
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else |
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AC_MSG_RESULT([no]) |
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fi |
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]) |
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|
|
|
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dnl CARES_CHECK_COMPILER_DEC_C |
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dnl ------------------------------------------------- |
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dnl Verify if compiler being used is DEC C. |
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|
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AC_DEFUN([CARES_CHECK_COMPILER_DEC_C], [ |
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AC_MSG_CHECKING([if compiler is DEC/Compaq/HP C]) |
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CURL_CHECK_DEF([__DECC], [], [silent]) |
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CURL_CHECK_DEF([__DECC_VER], [], [silent]) |
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if test "$curl_cv_have_def___DECC" = "yes" && |
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test "$curl_cv_have_def___DECC_VER" = "yes"; then |
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AC_MSG_RESULT([yes]) |
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compiler_id="DEC_C" |
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flags_dbg_all="-g -g0 -g1 -g2 -g3" |
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flags_dbg_yes="-g2" |
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flags_dbg_off="-g0" |
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flags_opt_all="-O -O0 -O1 -O2 -O3 -O4" |
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flags_opt_yes="-O1" |
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flags_opt_off="-O0" |
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else |
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AC_MSG_RESULT([no]) |
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fi |
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]) |
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|
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dnl CARES_CHECK_COMPILER_GNU_C |
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dnl ------------------------------------------------- |
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dnl Verify if compiler being used is GNU C. |
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|
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AC_DEFUN([CARES_CHECK_COMPILER_GNU_C], [ |
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AC_REQUIRE([CARES_CHECK_COMPILER_INTEL_C])dnl |
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AC_REQUIRE([CARES_CHECK_COMPILER_CLANG])dnl |
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AC_MSG_CHECKING([if compiler is GNU C]) |
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CURL_CHECK_DEF([__GNUC__], [], [silent]) |
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if test "$curl_cv_have_def___GNUC__" = "yes" && |
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test "$compiler_id" = "unknown"; then |
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AC_MSG_RESULT([yes]) |
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compiler_id="GNU_C" |
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gccver=`$CC -dumpversion` |
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gccvhi=`echo $gccver | cut -d . -f1` |
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gccvlo=`echo $gccver | cut -d . -f2` |
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compiler_num=`(expr $gccvhi "*" 100 + $gccvlo) 2>/dev/null` |
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flags_dbg_all="-g -g0 -g1 -g2 -g3" |
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flags_dbg_all="$flags_dbg_all -ggdb" |
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flags_dbg_all="$flags_dbg_all -gstabs" |
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flags_dbg_all="$flags_dbg_all -gstabs+" |
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flags_dbg_all="$flags_dbg_all -gcoff" |
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flags_dbg_all="$flags_dbg_all -gxcoff" |
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flags_dbg_all="$flags_dbg_all -gdwarf-2" |
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flags_dbg_all="$flags_dbg_all -gvms" |
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flags_dbg_yes="-g" |
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flags_dbg_off="-g0" |
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flags_opt_all="-O -O0 -O1 -O2 -O3 -Os" |
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flags_opt_yes="-O2" |
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flags_opt_off="-O0" |
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else |
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AC_MSG_RESULT([no]) |
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fi |
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]) |
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dnl CARES_CHECK_COMPILER_HPUX_C |
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dnl ------------------------------------------------- |
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dnl Verify if compiler being used is HP-UX C. |
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|
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AC_DEFUN([CARES_CHECK_COMPILER_HPUX_C], [ |
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AC_MSG_CHECKING([if compiler is HP-UX C]) |
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CURL_CHECK_DEF([__HP_cc], [], [silent]) |
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if test "$curl_cv_have_def___HP_cc" = "yes"; then |
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AC_MSG_RESULT([yes]) |
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compiler_id="HP_UX_C" |
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flags_dbg_all="-g -s" |
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flags_dbg_yes="-g" |
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flags_dbg_off="-s" |
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flags_opt_all="-O +O0 +O1 +O2 +O3 +O4" |
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flags_opt_yes="+O2" |
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flags_opt_off="+O0" |
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else |
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AC_MSG_RESULT([no]) |
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fi |
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]) |
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|
|
|
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dnl CARES_CHECK_COMPILER_IBM_C |
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dnl ------------------------------------------------- |
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dnl Verify if compiler being used is IBM C. |
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AC_DEFUN([CARES_CHECK_COMPILER_IBM_C], [ |
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AC_MSG_CHECKING([if compiler is IBM C]) |
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CURL_CHECK_DEF([__IBMC__], [], [silent]) |
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if test "$curl_cv_have_def___IBMC__" = "yes"; then |
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AC_MSG_RESULT([yes]) |
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compiler_id="IBM_C" |
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flags_dbg_all="-g -g0 -g1 -g2 -g3" |
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flags_dbg_yes="-g" |
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flags_dbg_off="" |
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flags_opt_all="-O -O0 -O1 -O2 -O3 -O4 -O5" |
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flags_opt_all="$flags_opt_all -qnooptimize" |
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flags_opt_all="$flags_opt_all -qoptimize=0" |
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flags_opt_all="$flags_opt_all -qoptimize=1" |
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flags_opt_all="$flags_opt_all -qoptimize=2" |
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flags_opt_all="$flags_opt_all -qoptimize=3" |
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flags_opt_all="$flags_opt_all -qoptimize=4" |
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flags_opt_all="$flags_opt_all -qoptimize=5" |
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flags_opt_yes="-O2" |
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flags_opt_off="-qnooptimize" |
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flags_prefer_cppflags="yes" |
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else |
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AC_MSG_RESULT([no]) |
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fi |
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]) |
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|
|
|
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dnl CARES_CHECK_COMPILER_INTEL_C |
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dnl ------------------------------------------------- |
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dnl Verify if compiler being used is Intel C. |
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|
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AC_DEFUN([CARES_CHECK_COMPILER_INTEL_C], [ |
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AC_BEFORE([$0],[CARES_CHECK_COMPILER_GNU_C])dnl |
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AC_MSG_CHECKING([if compiler is Intel C]) |
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CURL_CHECK_DEF([__INTEL_COMPILER], [], [silent]) |
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if test "$curl_cv_have_def___INTEL_COMPILER" = "yes"; then |
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AC_MSG_RESULT([yes]) |
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compiler_num="$curl_cv_def___INTEL_COMPILER" |
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CURL_CHECK_DEF([__unix__], [], [silent]) |
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if test "$curl_cv_have_def___unix__" = "yes"; then |
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compiler_id="INTEL_UNIX_C" |
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flags_dbg_all="-g -g0" |
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flags_dbg_yes="-g" |
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flags_dbg_off="-g0" |
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flags_opt_all="-O -O0 -O1 -O2 -O3 -Os" |
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flags_opt_yes="-O2" |
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flags_opt_off="-O0" |
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else |
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compiler_id="INTEL_WINDOWS_C" |
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flags_dbg_all="/ZI /Zi /zI /zi /ZD /Zd /zD /zd /Z7 /z7 /Oy /Oy-" |
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flags_dbg_all="$flags_dbg_all /debug" |
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flags_dbg_all="$flags_dbg_all /debug:none" |
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flags_dbg_all="$flags_dbg_all /debug:minimal" |
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flags_dbg_all="$flags_dbg_all /debug:partial" |
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flags_dbg_all="$flags_dbg_all /debug:full" |
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flags_dbg_all="$flags_dbg_all /debug:semantic_stepping" |
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flags_dbg_all="$flags_dbg_all /debug:extended" |
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flags_dbg_yes="/Zi /Oy-" |
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flags_dbg_off="/debug:none /Oy-" |
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flags_opt_all="/O /O0 /O1 /O2 /O3 /Od /Og /Og- /Oi /Oi-" |
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flags_opt_yes="/O2" |
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flags_opt_off="/Od" |
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fi |
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else |
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AC_MSG_RESULT([no]) |
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fi |
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]) |
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|
|
|
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dnl CARES_CHECK_COMPILER_LCC |
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dnl ------------------------------------------------- |
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dnl Verify if compiler being used is LCC. |
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|
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AC_DEFUN([CARES_CHECK_COMPILER_LCC], [ |
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AC_MSG_CHECKING([if compiler is LCC]) |
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CURL_CHECK_DEF([__LCC__], [], [silent]) |
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if test "$curl_cv_have_def___LCC__" = "yes"; then |
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AC_MSG_RESULT([yes]) |
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compiler_id="LCC" |
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flags_dbg_all="-g" |
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flags_dbg_yes="-g" |
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flags_dbg_off="" |
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flags_opt_all="" |
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flags_opt_yes="" |
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flags_opt_off="" |
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else |
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AC_MSG_RESULT([no]) |
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fi |
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]) |
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|
|
|
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dnl CARES_CHECK_COMPILER_SGI_MIPS_C |
|
dnl ------------------------------------------------- |
|
dnl Verify if compiler being used is SGI MIPS C. |
|
|
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AC_DEFUN([CARES_CHECK_COMPILER_SGI_MIPS_C], [ |
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AC_REQUIRE([CARES_CHECK_COMPILER_SGI_MIPSPRO_C])dnl |
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AC_MSG_CHECKING([if compiler is SGI MIPS C]) |
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CURL_CHECK_DEF([__GNUC__], [], [silent]) |
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CURL_CHECK_DEF([__sgi], [], [silent]) |
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if test "$curl_cv_have_def___GNUC__" = "no" && |
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test "$curl_cv_have_def___sgi" = "yes" && |
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test "$compiler_id" = "unknown"; then |
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AC_MSG_RESULT([yes]) |
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compiler_id="SGI_MIPS_C" |
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flags_dbg_all="-g -g0 -g1 -g2 -g3" |
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flags_dbg_yes="-g" |
|
flags_dbg_off="-g0" |
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flags_opt_all="-O -O0 -O1 -O2 -O3 -Ofast" |
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flags_opt_yes="-O2" |
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flags_opt_off="-O0" |
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else |
|
AC_MSG_RESULT([no]) |
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fi |
|
]) |
|
|
|
|
|
dnl CARES_CHECK_COMPILER_SGI_MIPSPRO_C |
|
dnl ------------------------------------------------- |
|
dnl Verify if compiler being used is SGI MIPSpro C. |
|
|
|
AC_DEFUN([CARES_CHECK_COMPILER_SGI_MIPSPRO_C], [ |
|
AC_BEFORE([$0],[CARES_CHECK_COMPILER_SGI_MIPS_C])dnl |
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AC_MSG_CHECKING([if compiler is SGI MIPSpro C]) |
|
CURL_CHECK_DEF([__GNUC__], [], [silent]) |
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CURL_CHECK_DEF([_COMPILER_VERSION], [], [silent]) |
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CURL_CHECK_DEF([_SGI_COMPILER_VERSION], [], [silent]) |
|
if test "$curl_cv_have_def___GNUC__" = "no" && |
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(test "$curl_cv_have_def__SGI_COMPILER_VERSION" = "yes" || |
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test "$curl_cv_have_def__COMPILER_VERSION" = "yes"); then |
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AC_MSG_RESULT([yes]) |
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compiler_id="SGI_MIPSPRO_C" |
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flags_dbg_all="-g -g0 -g1 -g2 -g3" |
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flags_dbg_yes="-g" |
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flags_dbg_off="-g0" |
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flags_opt_all="-O -O0 -O1 -O2 -O3 -Ofast" |
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flags_opt_yes="-O2" |
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flags_opt_off="-O0" |
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else |
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AC_MSG_RESULT([no]) |
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fi |
|
]) |
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|
|
|
|
dnl CARES_CHECK_COMPILER_SUNPRO_C |
|
dnl ------------------------------------------------- |
|
dnl Verify if compiler being used is SunPro C. |
|
|
|
AC_DEFUN([CARES_CHECK_COMPILER_SUNPRO_C], [ |
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AC_MSG_CHECKING([if compiler is SunPro C]) |
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CURL_CHECK_DEF([__SUNPRO_C], [], [silent]) |
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if test "$curl_cv_have_def___SUNPRO_C" = "yes"; then |
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AC_MSG_RESULT([yes]) |
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compiler_id="SUNPRO_C" |
|
flags_dbg_all="-g -s" |
|
flags_dbg_yes="-g" |
|
flags_dbg_off="-s" |
|
flags_opt_all="-O -xO -xO1 -xO2 -xO3 -xO4 -xO5" |
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flags_opt_yes="-xO2" |
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flags_opt_off="" |
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else |
|
AC_MSG_RESULT([no]) |
|
fi |
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]) |
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|
|
|
|
dnl CARES_CHECK_COMPILER_TINY_C |
|
dnl ------------------------------------------------- |
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dnl Verify if compiler being used is Tiny C. |
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|
|
AC_DEFUN([CARES_CHECK_COMPILER_TINY_C], [ |
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AC_MSG_CHECKING([if compiler is Tiny C]) |
|
CURL_CHECK_DEF([__TINYC__], [], [silent]) |
|
if test "$curl_cv_have_def___TINYC__" = "yes"; then |
|
AC_MSG_RESULT([yes]) |
|
compiler_id="TINY_C" |
|
flags_dbg_all="-g -b" |
|
flags_dbg_yes="-g" |
|
flags_dbg_off="" |
|
flags_opt_all="" |
|
flags_opt_yes="" |
|
flags_opt_off="" |
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else |
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AC_MSG_RESULT([no]) |
|
fi |
|
]) |
|
|
|
|
|
dnl CARES_CHECK_COMPILER_WATCOM_C |
|
dnl ------------------------------------------------- |
|
dnl Verify if compiler being used is Watcom C. |
|
|
|
AC_DEFUN([CARES_CHECK_COMPILER_WATCOM_C], [ |
|
AC_MSG_CHECKING([if compiler is Watcom C]) |
|
CURL_CHECK_DEF([__WATCOMC__], [], [silent]) |
|
if test "$curl_cv_have_def___WATCOMC__" = "yes"; then |
|
AC_MSG_RESULT([yes]) |
|
CURL_CHECK_DEF([__UNIX__], [], [silent]) |
|
if test "$curl_cv_have_def___UNIX__" = "yes"; then |
|
compiler_id="WATCOM_UNIX_C" |
|
flags_dbg_all="-g1 -g1+ -g2 -g3" |
|
flags_dbg_yes="-g2" |
|
flags_dbg_off="" |
|
flags_opt_all="-O0 -O1 -O2 -O3" |
|
flags_opt_yes="-O2" |
|
flags_opt_off="-O0" |
|
else |
|
compiler_id="WATCOM_WINDOWS_C" |
|
flags_dbg_all="" |
|
flags_dbg_yes="" |
|
flags_dbg_off="" |
|
flags_opt_all="" |
|
flags_opt_yes="" |
|
flags_opt_off="" |
|
fi |
|
else |
|
AC_MSG_RESULT([no]) |
|
fi |
|
]) |
|
|
|
|
|
dnl CARES_CONVERT_INCLUDE_TO_ISYSTEM |
|
dnl ------------------------------------------------- |
|
dnl Changes standard include paths present in CFLAGS |
|
dnl and CPPFLAGS into isystem include paths. This is |
|
dnl done to prevent GNUC from generating warnings on |
|
dnl headers from these locations, although on ancient |
|
dnl GNUC versions these warnings are not silenced. |
|
|
|
AC_DEFUN([CARES_CONVERT_INCLUDE_TO_ISYSTEM], [ |
|
AC_REQUIRE([CARES_SHFUNC_SQUEEZE])dnl |
|
AC_REQUIRE([CARES_CHECK_COMPILER])dnl |
|
if test "$compiler_id" = "GNU_C" || |
|
test "$compiler_id" = "CLANG"; then |
|
tmp_has_include="no" |
|
tmp_chg_FLAGS="$CFLAGS" |
|
for word1 in $tmp_chg_FLAGS; do |
|
case "$word1" in |
|
-I*) |
|
tmp_has_include="yes" |
|
;; |
|
esac |
|
done |
|
if test "$tmp_has_include" = "yes"; then |
|
tmp_chg_FLAGS=`echo "$tmp_chg_FLAGS" | "$SED" 's/^-I/ -isystem /g'` |
|
tmp_chg_FLAGS=`echo "$tmp_chg_FLAGS" | "$SED" 's/ -I/ -isystem /g'` |
|
CFLAGS="$tmp_chg_FLAGS" |
|
squeeze CFLAGS |
|
fi |
|
tmp_has_include="no" |
|
tmp_chg_FLAGS="$CPPFLAGS" |
|
for word1 in $tmp_chg_FLAGS; do |
|
case "$word1" in |
|
-I*) |
|
tmp_has_include="yes" |
|
;; |
|
esac |
|
done |
|
if test "$tmp_has_include" = "yes"; then |
|
tmp_chg_FLAGS=`echo "$tmp_chg_FLAGS" | "$SED" 's/^-I/ -isystem /g'` |
|
tmp_chg_FLAGS=`echo "$tmp_chg_FLAGS" | "$SED" 's/ -I/ -isystem /g'` |
|
CPPFLAGS="$tmp_chg_FLAGS" |
|
squeeze CPPFLAGS |
|
fi |
|
fi |
|
]) |
|
|
|
|
|
dnl CARES_COMPILER_WORKS_IFELSE ([ACTION-IF-WORKS], [ACTION-IF-NOT-WORKS]) |
|
dnl ------------------------------------------------- |
|
dnl Verify if the C compiler seems to work with the |
|
dnl settings that are 'active' at the time the test |
|
dnl is performed. |
|
|
|
AC_DEFUN([CARES_COMPILER_WORKS_IFELSE], [ |
|
dnl compilation capability verification |
|
tmp_compiler_works="unknown" |
|
AC_COMPILE_IFELSE([ |
|
AC_LANG_PROGRAM([[ |
|
]],[[ |
|
int i = 1; |
|
return i; |
|
]]) |
|
],[ |
|
tmp_compiler_works="yes" |
|
],[ |
|
tmp_compiler_works="no" |
|
echo " " >&6 |
|
sed 's/^/cc-fail: /' conftest.err >&6 |
|
echo " " >&6 |
|
]) |
|
dnl linking capability verification |
|
if test "$tmp_compiler_works" = "yes"; then |
|
AC_LINK_IFELSE([ |
|
AC_LANG_PROGRAM([[ |
|
]],[[ |
|
int i = 1; |
|
return i; |
|
]]) |
|
],[ |
|
tmp_compiler_works="yes" |
|
],[ |
|
tmp_compiler_works="no" |
|
echo " " >&6 |
|
sed 's/^/link-fail: /' conftest.err >&6 |
|
echo " " >&6 |
|
]) |
|
fi |
|
dnl only do runtime verification when not cross-compiling |
|
if test "x$cross_compiling" != "xyes" && |
|
test "$tmp_compiler_works" = "yes"; then |
|
AC_RUN_IFELSE([ |
|
AC_LANG_PROGRAM([[ |
|
# ifdef __STDC__ |
|
# include <stdlib.h> |
|
# endif |
|
]],[[ |
|
int i = 0; |
|
exit(i); |
|
]]) |
|
],[ |
|
tmp_compiler_works="yes" |
|
],[ |
|
tmp_compiler_works="no" |
|
echo " " >&6 |
|
echo "run-fail: test program exited with status $ac_status" >&6 |
|
echo " " >&6 |
|
]) |
|
fi |
|
dnl branch upon test result |
|
if test "$tmp_compiler_works" = "yes"; then |
|
ifelse($1,,:,[$1]) |
|
ifelse($2,,,[else |
|
$2]) |
|
fi |
|
]) |
|
|
|
|
|
dnl CARES_SET_COMPILER_BASIC_OPTS |
|
dnl ------------------------------------------------- |
|
dnl Sets compiler specific options/flags which do not |
|
dnl depend on configure's debug, optimize or warnings |
|
dnl options. |
|
|
|
AC_DEFUN([CARES_SET_COMPILER_BASIC_OPTS], [ |
|
AC_REQUIRE([CARES_CHECK_COMPILER])dnl |
|
AC_REQUIRE([CARES_SHFUNC_SQUEEZE])dnl |
|
# |
|
if test "$compiler_id" != "unknown"; then |
|
# |
|
if test "$compiler_id" = "GNU_C" || |
|
test "$compiler_id" = "CLANG"; then |
|
CARES_CONVERT_INCLUDE_TO_ISYSTEM |
|
fi |
|
# |
|
tmp_save_CPPFLAGS="$CPPFLAGS" |
|
tmp_save_CFLAGS="$CFLAGS" |
|
tmp_CPPFLAGS="" |
|
tmp_CFLAGS="" |
|
# |
|
case "$compiler_id" in |
|
# |
|
CLANG) |
|
# |
|
dnl Disable warnings for unused arguments, otherwise clang will |
|
dnl warn about compile-time arguments used during link-time, like |
|
dnl -O and -g and -pedantic. |
|
tmp_CFLAGS="$tmp_CFLAGS -Qunused-arguments" |
|
;; |
|
# |
|
DEC_C) |
|
# |
|
dnl Select strict ANSI C compiler mode |
|
tmp_CFLAGS="$tmp_CFLAGS -std1" |
|
dnl Turn off optimizer ANSI C aliasing rules |
|
tmp_CFLAGS="$tmp_CFLAGS -noansi_alias" |
|
dnl Generate warnings for missing function prototypes |
|
tmp_CFLAGS="$tmp_CFLAGS -warnprotos" |
|
dnl Change some warnings into fatal errors |
|
tmp_CFLAGS="$tmp_CFLAGS -msg_fatal toofewargs,toomanyargs" |
|
;; |
|
# |
|
GNU_C) |
|
# |
|
dnl Placeholder |
|
tmp_CFLAGS="$tmp_CFLAGS" |
|
;; |
|
# |
|
HP_UX_C) |
|
# |
|
dnl Disallow run-time dereferencing of null pointers |
|
tmp_CFLAGS="$tmp_CFLAGS -z" |
|
dnl Disable some remarks |
|
dnl #4227: padding struct with n bytes to align member |
|
dnl #4255: padding size of struct with n bytes to alignment boundary |
|
tmp_CFLAGS="$tmp_CFLAGS +W 4227,4255" |
|
;; |
|
# |
|
IBM_C) |
|
# |
|
dnl Ensure that compiler optimizations are always thread-safe. |
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -qthreaded" |
|
dnl Disable type based strict aliasing optimizations, using worst |
|
dnl case aliasing assumptions when compiling. Type based aliasing |
|
dnl would restrict the lvalues that could be safely used to access |
|
dnl a data object. |
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -qnoansialias" |
|
dnl Force compiler to stop after the compilation phase, without |
|
dnl generating an object code file when compilation has errors. |
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -qhalt=e" |
|
;; |
|
# |
|
INTEL_UNIX_C) |
|
# |
|
dnl On unix this compiler uses gcc's header files, so |
|
dnl we select ANSI C89 dialect plus GNU extensions. |
|
tmp_CFLAGS="$tmp_CFLAGS -std=gnu89" |
|
dnl Change some warnings into errors |
|
dnl #140: too many arguments in function call |
|
dnl #147: declaration is incompatible with 'previous one' |
|
dnl #165: too few arguments in function call |
|
dnl #266: function declared implicitly |
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -we 140,147,165,266" |
|
dnl Disable some remarks |
|
dnl #279: controlling expression is constant |
|
dnl #981: operands are evaluated in unspecified order |
|
dnl #1469: "cc" clobber ignored |
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -wd 279,981,1469" |
|
;; |
|
# |
|
INTEL_WINDOWS_C) |
|
# |
|
dnl Placeholder |
|
tmp_CFLAGS="$tmp_CFLAGS" |
|
;; |
|
# |
|
LCC) |
|
# |
|
dnl Disallow run-time dereferencing of null pointers |
|
tmp_CFLAGS="$tmp_CFLAGS -n" |
|
;; |
|
# |
|
SGI_MIPS_C) |
|
# |
|
dnl Placeholder |
|
tmp_CFLAGS="$tmp_CFLAGS" |
|
;; |
|
# |
|
SGI_MIPSPRO_C) |
|
# |
|
dnl Placeholder |
|
tmp_CFLAGS="$tmp_CFLAGS" |
|
;; |
|
# |
|
SUNPRO_C) |
|
# |
|
dnl Placeholder |
|
tmp_CFLAGS="$tmp_CFLAGS" |
|
;; |
|
# |
|
TINY_C) |
|
# |
|
dnl Placeholder |
|
tmp_CFLAGS="$tmp_CFLAGS" |
|
;; |
|
# |
|
WATCOM_UNIX_C) |
|
# |
|
dnl Placeholder |
|
tmp_CFLAGS="$tmp_CFLAGS" |
|
;; |
|
# |
|
WATCOM_WINDOWS_C) |
|
# |
|
dnl Placeholder |
|
tmp_CFLAGS="$tmp_CFLAGS" |
|
;; |
|
# |
|
esac |
|
# |
|
squeeze tmp_CPPFLAGS |
|
squeeze tmp_CFLAGS |
|
# |
|
if test ! -z "$tmp_CFLAGS" || test ! -z "$tmp_CPPFLAGS"; then |
|
AC_MSG_CHECKING([if compiler accepts some basic options]) |
|
CPPFLAGS="$tmp_save_CPPFLAGS $tmp_CPPFLAGS" |
|
CFLAGS="$tmp_save_CFLAGS $tmp_CFLAGS" |
|
squeeze CPPFLAGS |
|
squeeze CFLAGS |
|
CARES_COMPILER_WORKS_IFELSE([ |
|
AC_MSG_RESULT([yes]) |
|
AC_MSG_NOTICE([compiler options added: $tmp_CFLAGS $tmp_CPPFLAGS]) |
|
],[ |
|
AC_MSG_RESULT([no]) |
|
AC_MSG_WARN([compiler options rejected: $tmp_CFLAGS $tmp_CPPFLAGS]) |
|
dnl restore initial settings |
|
CPPFLAGS="$tmp_save_CPPFLAGS" |
|
CFLAGS="$tmp_save_CFLAGS" |
|
]) |
|
fi |
|
# |
|
fi |
|
]) |
|
|
|
|
|
dnl CARES_SET_COMPILER_DEBUG_OPTS |
|
dnl ------------------------------------------------- |
|
dnl Sets compiler specific options/flags which depend |
|
dnl on configure's debug option. |
|
|
|
AC_DEFUN([CARES_SET_COMPILER_DEBUG_OPTS], [ |
|
AC_REQUIRE([CARES_CHECK_OPTION_DEBUG])dnl |
|
AC_REQUIRE([CARES_CHECK_COMPILER])dnl |
|
AC_REQUIRE([CARES_SHFUNC_SQUEEZE])dnl |
|
# |
|
if test "$compiler_id" != "unknown"; then |
|
# |
|
tmp_save_CFLAGS="$CFLAGS" |
|
tmp_save_CPPFLAGS="$CPPFLAGS" |
|
# |
|
tmp_options="" |
|
tmp_CFLAGS="$CFLAGS" |
|
tmp_CPPFLAGS="$CPPFLAGS" |
|
CARES_VAR_STRIP([tmp_CFLAGS],[$flags_dbg_all]) |
|
CARES_VAR_STRIP([tmp_CPPFLAGS],[$flags_dbg_all]) |
|
# |
|
if test "$want_debug" = "yes"; then |
|
AC_MSG_CHECKING([if compiler accepts debug enabling options]) |
|
tmp_options="$flags_dbg_yes" |
|
fi |
|
if test "$want_debug" = "no"; then |
|
AC_MSG_CHECKING([if compiler accepts debug disabling options]) |
|
tmp_options="$flags_dbg_off" |
|
fi |
|
# |
|
if test "$flags_prefer_cppflags" = "yes"; then |
|
CPPFLAGS="$tmp_CPPFLAGS $tmp_options" |
|
CFLAGS="$tmp_CFLAGS" |
|
else |
|
CPPFLAGS="$tmp_CPPFLAGS" |
|
CFLAGS="$tmp_CFLAGS $tmp_options" |
|
fi |
|
squeeze CPPFLAGS |
|
squeeze CFLAGS |
|
CARES_COMPILER_WORKS_IFELSE([ |
|
AC_MSG_RESULT([yes]) |
|
AC_MSG_NOTICE([compiler options added: $tmp_options]) |
|
],[ |
|
AC_MSG_RESULT([no]) |
|
AC_MSG_WARN([compiler options rejected: $tmp_options]) |
|
dnl restore initial settings |
|
CPPFLAGS="$tmp_save_CPPFLAGS" |
|
CFLAGS="$tmp_save_CFLAGS" |
|
]) |
|
# |
|
fi |
|
]) |
|
|
|
|
|
dnl CARES_SET_COMPILER_OPTIMIZE_OPTS |
|
dnl ------------------------------------------------- |
|
dnl Sets compiler specific options/flags which depend |
|
dnl on configure's optimize option. |
|
|
|
AC_DEFUN([CARES_SET_COMPILER_OPTIMIZE_OPTS], [ |
|
AC_REQUIRE([CARES_CHECK_OPTION_OPTIMIZE])dnl |
|
AC_REQUIRE([CARES_CHECK_COMPILER])dnl |
|
AC_REQUIRE([CARES_SHFUNC_SQUEEZE])dnl |
|
# |
|
if test "$compiler_id" != "unknown"; then |
|
# |
|
tmp_save_CFLAGS="$CFLAGS" |
|
tmp_save_CPPFLAGS="$CPPFLAGS" |
|
# |
|
tmp_options="" |
|
tmp_CFLAGS="$CFLAGS" |
|
tmp_CPPFLAGS="$CPPFLAGS" |
|
honor_optimize_option="yes" |
|
# |
|
dnl If optimization request setting has not been explicitly specified, |
|
dnl it has been derived from the debug setting and initially assumed. |
|
dnl This initially assumed optimizer setting will finally be ignored |
|
dnl if CFLAGS or CPPFLAGS already hold optimizer flags. This implies |
|
dnl that an initially assumed optimizer setting might not be honored. |
|
# |
|
if test "$want_optimize" = "assume_no" || |
|
test "$want_optimize" = "assume_yes"; then |
|
AC_MSG_CHECKING([if compiler optimizer assumed setting might be used]) |
|
CARES_VAR_MATCH_IFELSE([tmp_CFLAGS],[$flags_opt_all],[ |
|
honor_optimize_option="no" |
|
]) |
|
CARES_VAR_MATCH_IFELSE([tmp_CPPFLAGS],[$flags_opt_all],[ |
|
honor_optimize_option="no" |
|
]) |
|
AC_MSG_RESULT([$honor_optimize_option]) |
|
if test "$honor_optimize_option" = "yes"; then |
|
if test "$want_optimize" = "assume_yes"; then |
|
want_optimize="yes" |
|
fi |
|
if test "$want_optimize" = "assume_no"; then |
|
want_optimize="no" |
|
fi |
|
fi |
|
fi |
|
# |
|
if test "$honor_optimize_option" = "yes"; then |
|
CARES_VAR_STRIP([tmp_CFLAGS],[$flags_opt_all]) |
|
CARES_VAR_STRIP([tmp_CPPFLAGS],[$flags_opt_all]) |
|
if test "$want_optimize" = "yes"; then |
|
AC_MSG_CHECKING([if compiler accepts optimizer enabling options]) |
|
tmp_options="$flags_opt_yes" |
|
fi |
|
if test "$want_optimize" = "no"; then |
|
AC_MSG_CHECKING([if compiler accepts optimizer disabling options]) |
|
tmp_options="$flags_opt_off" |
|
fi |
|
if test "$flags_prefer_cppflags" = "yes"; then |
|
CPPFLAGS="$tmp_CPPFLAGS $tmp_options" |
|
CFLAGS="$tmp_CFLAGS" |
|
else |
|
CPPFLAGS="$tmp_CPPFLAGS" |
|
CFLAGS="$tmp_CFLAGS $tmp_options" |
|
fi |
|
squeeze CPPFLAGS |
|
squeeze CFLAGS |
|
CARES_COMPILER_WORKS_IFELSE([ |
|
AC_MSG_RESULT([yes]) |
|
AC_MSG_NOTICE([compiler options added: $tmp_options]) |
|
],[ |
|
AC_MSG_RESULT([no]) |
|
AC_MSG_WARN([compiler options rejected: $tmp_options]) |
|
dnl restore initial settings |
|
CPPFLAGS="$tmp_save_CPPFLAGS" |
|
CFLAGS="$tmp_save_CFLAGS" |
|
]) |
|
fi |
|
# |
|
fi |
|
]) |
|
|
|
|
|
dnl CARES_SET_COMPILER_WARNING_OPTS |
|
dnl ------------------------------------------------- |
|
dnl Sets compiler options/flags which depend on |
|
dnl configure's warnings given option. |
|
|
|
AC_DEFUN([CARES_SET_COMPILER_WARNING_OPTS], [ |
|
AC_REQUIRE([CARES_CHECK_OPTION_WARNINGS])dnl |
|
AC_REQUIRE([CARES_CHECK_COMPILER])dnl |
|
AC_REQUIRE([CARES_SHFUNC_SQUEEZE])dnl |
|
# |
|
if test "$compiler_id" != "unknown"; then |
|
# |
|
tmp_save_CPPFLAGS="$CPPFLAGS" |
|
tmp_save_CFLAGS="$CFLAGS" |
|
tmp_CPPFLAGS="" |
|
tmp_CFLAGS="" |
|
# |
|
case "$compiler_id" in |
|
# |
|
CLANG) |
|
# |
|
if test "$want_warnings" = "yes"; then |
|
dnl All versions of clang support the same warnings as at least |
|
dnl gcc 4.2.1 except -Wunused. |
|
tmp_CFLAGS="$tmp_CFLAGS -pedantic" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wall -Wextra" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wpointer-arith -Wwrite-strings" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wshadow" |
|
tmp_CFLAGS="$tmp_CFLAGS -Winline -Wnested-externs" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wmissing-declarations" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wmissing-prototypes" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-long-long" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wfloat-equal" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-multichar -Wsign-compare" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wundef" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-format-nonliteral" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wendif-labels -Wstrict-prototypes" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wdeclaration-after-statement" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wcast-align" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-system-headers" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wshorten-64-to-32" |
|
# |
|
dnl Only clang 1.1 or later |
|
if test "$compiler_num" -ge "101"; then |
|
tmp_CFLAGS="$tmp_CFLAGS -Wunused" |
|
fi |
|
fi |
|
;; |
|
# |
|
DEC_C) |
|
# |
|
if test "$want_warnings" = "yes"; then |
|
dnl Select a higher warning level than default level2 |
|
tmp_CFLAGS="$tmp_CFLAGS -msg_enable level3" |
|
fi |
|
;; |
|
# |
|
GNU_C) |
|
# |
|
if test "$want_warnings" = "yes"; then |
|
# |
|
dnl Do not enable -pedantic when cross-compiling with a gcc older |
|
dnl than 3.0, to avoid warnings from third party system headers. |
|
if test "x$cross_compiling" != "xyes" || |
|
test "$compiler_num" -ge "300"; then |
|
tmp_CFLAGS="$tmp_CFLAGS -pedantic" |
|
fi |
|
# |
|
dnl Set of options we believe *ALL* gcc versions support: |
|
tmp_CFLAGS="$tmp_CFLAGS -Wall -W" |
|
# |
|
dnl Only gcc 1.4 or later |
|
if test "$compiler_num" -ge "104"; then |
|
tmp_CFLAGS="$tmp_CFLAGS -Wpointer-arith -Wwrite-strings" |
|
dnl If not cross-compiling with a gcc older than 3.0 |
|
if test "x$cross_compiling" != "xyes" || |
|
test "$compiler_num" -ge "300"; then |
|
tmp_CFLAGS="$tmp_CFLAGS -Wunused -Wshadow" |
|
fi |
|
fi |
|
# |
|
dnl Only gcc 2.7 or later |
|
if test "$compiler_num" -ge "207"; then |
|
tmp_CFLAGS="$tmp_CFLAGS -Winline -Wnested-externs" |
|
dnl If not cross-compiling with a gcc older than 3.0 |
|
if test "x$cross_compiling" != "xyes" || |
|
test "$compiler_num" -ge "300"; then |
|
tmp_CFLAGS="$tmp_CFLAGS -Wmissing-declarations" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wmissing-prototypes" |
|
fi |
|
fi |
|
# |
|
dnl Only gcc 2.95 or later |
|
if test "$compiler_num" -ge "295"; then |
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-long-long" |
|
fi |
|
# |
|
dnl Only gcc 2.96 or later |
|
if test "$compiler_num" -ge "296"; then |
|
tmp_CFLAGS="$tmp_CFLAGS -Wfloat-equal" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-multichar -Wsign-compare" |
|
dnl -Wundef used only if gcc is 2.96 or later since we get |
|
dnl lots of "`_POSIX_C_SOURCE' is not defined" in system |
|
dnl headers with gcc 2.95.4 on FreeBSD 4.9 |
|
tmp_CFLAGS="$tmp_CFLAGS -Wundef" |
|
fi |
|
# |
|
dnl Only gcc 2.97 or later |
|
if test "$compiler_num" -ge "297"; then |
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-format-nonliteral" |
|
fi |
|
# |
|
dnl Only gcc 3.0 or later |
|
if test "$compiler_num" -ge "300"; then |
|
dnl -Wunreachable-code seems totally unreliable on my gcc 3.3.2 on |
|
dnl on i686-Linux as it gives us heaps with false positives. |
|
dnl Also, on gcc 4.0.X it is totally unbearable and complains all |
|
dnl over making it unusable for generic purposes. Let's not use it. |
|
tmp_CFLAGS="$tmp_CFLAGS" |
|
fi |
|
# |
|
dnl Only gcc 3.3 or later |
|
if test "$compiler_num" -ge "303"; then |
|
tmp_CFLAGS="$tmp_CFLAGS -Wendif-labels -Wstrict-prototypes" |
|
fi |
|
# |
|
dnl Only gcc 3.4 or later |
|
if test "$compiler_num" -ge "304"; then |
|
tmp_CFLAGS="$tmp_CFLAGS -Wdeclaration-after-statement" |
|
fi |
|
# |
|
dnl Only gcc 4.2 or later |
|
if test "$compiler_num" -ge "402"; then |
|
tmp_CFLAGS="$tmp_CFLAGS -Wcast-align" |
|
fi |
|
# |
|
dnl Only gcc 4.3 or later |
|
if test "$compiler_num" -ge "403"; then |
|
tmp_CFLAGS="$tmp_CFLAGS -Wtype-limits -Wold-style-declaration" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wmissing-parameter-type -Wempty-body" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wclobbered -Wignored-qualifiers" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wconversion -Wno-sign-conversion -Wvla" |
|
fi |
|
# |
|
fi |
|
# |
|
dnl Do not issue warnings for code in system include paths. |
|
if test "$compiler_num" -ge "300"; then |
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-system-headers" |
|
else |
|
dnl When cross-compiling with a gcc older than 3.0, disable |
|
dnl some warnings triggered on third party system headers. |
|
if test "x$cross_compiling" = "xyes"; then |
|
if test "$compiler_num" -ge "104"; then |
|
dnl gcc 1.4 or later |
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-unused -Wno-shadow" |
|
fi |
|
if test "$compiler_num" -ge "207"; then |
|
dnl gcc 2.7 or later |
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-missing-declarations" |
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-missing-prototypes" |
|
fi |
|
fi |
|
fi |
|
;; |
|
# |
|
HP_UX_C) |
|
# |
|
if test "$want_warnings" = "yes"; then |
|
dnl Issue all warnings |
|
tmp_CFLAGS="$tmp_CFLAGS +w1" |
|
fi |
|
;; |
|
# |
|
IBM_C) |
|
# |
|
dnl Placeholder |
|
tmp_CFLAGS="$tmp_CFLAGS" |
|
;; |
|
# |
|
INTEL_UNIX_C) |
|
# |
|
if test "$want_warnings" = "yes"; then |
|
if test "$compiler_num" -gt "600"; then |
|
dnl Show errors, warnings, and remarks |
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wall -w2" |
|
dnl Perform extra compile-time code checking |
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wcheck" |
|
dnl Warn on nested comments |
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wcomment" |
|
dnl Show warnings relative to deprecated features |
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wdeprecated" |
|
dnl Enable warnings for missing prototypes |
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wmissing-prototypes" |
|
dnl Enable warnings for 64-bit portability issues |
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wp64" |
|
dnl Enable warnings for questionable pointer arithmetic |
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wpointer-arith" |
|
dnl Check for function return typw issues |
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wreturn-type" |
|
dnl Warn on variable declarations hiding a previous one |
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wshadow" |
|
dnl Warn when a variable is used before initialized |
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wuninitialized" |
|
dnl Warn if a declared function is not used |
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wunused-function" |
|
fi |
|
fi |
|
dnl Disable using EBP register in optimizations |
|
tmp_CFLAGS="$tmp_CFLAGS -fno-omit-frame-pointer" |
|
dnl Disable use of ANSI C aliasing rules in optimizations |
|
tmp_CFLAGS="$tmp_CFLAGS -fno-strict-aliasing" |
|
dnl Value-safe optimizations on floating-point data |
|
tmp_CFLAGS="$tmp_CFLAGS -fp-model precise" |
|
dnl Only icc 10.0 or later |
|
if test "$compiler_num" -ge "1000"; then |
|
dnl Disable vectorizer diagnostic information |
|
tmp_CFLAGS="$tmp_CFLAGS -vec-report0" |
|
fi |
|
;; |
|
# |
|
INTEL_WINDOWS_C) |
|
# |
|
dnl Placeholder |
|
tmp_CFLAGS="$tmp_CFLAGS" |
|
;; |
|
# |
|
LCC) |
|
# |
|
if test "$want_warnings" = "yes"; then |
|
dnl Highest warning level is double -A, next is single -A. |
|
dnl Due to the big number of warnings these trigger on third |
|
dnl party header files it is impractical for us to use any of |
|
dnl them here. If you want them simply define it in CPPFLAGS. |
|
tmp_CFLAGS="$tmp_CFLAGS" |
|
fi |
|
;; |
|
# |
|
SGI_MIPS_C) |
|
# |
|
if test "$want_warnings" = "yes"; then |
|
dnl Perform stricter semantic and lint-like checks |
|
tmp_CFLAGS="$tmp_CFLAGS -fullwarn" |
|
fi |
|
;; |
|
# |
|
SGI_MIPSPRO_C) |
|
# |
|
if test "$want_warnings" = "yes"; then |
|
dnl Perform stricter semantic and lint-like checks |
|
tmp_CFLAGS="$tmp_CFLAGS -fullwarn" |
|
dnl Disable some remarks |
|
dnl #1209: controlling expression is constant |
|
tmp_CFLAGS="$tmp_CFLAGS -woff 1209" |
|
fi |
|
;; |
|
# |
|
SUNPRO_C) |
|
# |
|
if test "$want_warnings" = "yes"; then |
|
dnl Perform stricter semantic and lint-like checks |
|
tmp_CFLAGS="$tmp_CFLAGS -v" |
|
fi |
|
;; |
|
# |
|
TINY_C) |
|
# |
|
if test "$want_warnings" = "yes"; then |
|
dnl Activate all warnings |
|
tmp_CFLAGS="$tmp_CFLAGS -Wall" |
|
dnl Make string constants be of type const char * |
|
tmp_CFLAGS="$tmp_CFLAGS -Wwrite-strings" |
|
dnl Warn use of unsupported GCC features ignored by TCC |
|
tmp_CFLAGS="$tmp_CFLAGS -Wunsupported" |
|
fi |
|
;; |
|
# |
|
WATCOM_UNIX_C) |
|
# |
|
if test "$want_warnings" = "yes"; then |
|
dnl Issue all warnings |
|
tmp_CFLAGS="$tmp_CFLAGS -Wall -Wextra" |
|
fi |
|
;; |
|
# |
|
WATCOM_WINDOWS_C) |
|
# |
|
dnl Placeholder |
|
tmp_CFLAGS="$tmp_CFLAGS" |
|
;; |
|
# |
|
esac |
|
# |
|
squeeze tmp_CPPFLAGS |
|
squeeze tmp_CFLAGS |
|
# |
|
if test ! -z "$tmp_CFLAGS" || test ! -z "$tmp_CPPFLAGS"; then |
|
AC_MSG_CHECKING([if compiler accepts strict warning options]) |
|
CPPFLAGS="$tmp_save_CPPFLAGS $tmp_CPPFLAGS" |
|
CFLAGS="$tmp_save_CFLAGS $tmp_CFLAGS" |
|
squeeze CPPFLAGS |
|
squeeze CFLAGS |
|
CARES_COMPILER_WORKS_IFELSE([ |
|
AC_MSG_RESULT([yes]) |
|
AC_MSG_NOTICE([compiler options added: $tmp_CFLAGS $tmp_CPPFLAGS]) |
|
],[ |
|
AC_MSG_RESULT([no]) |
|
AC_MSG_WARN([compiler options rejected: $tmp_CFLAGS $tmp_CPPFLAGS]) |
|
dnl restore initial settings |
|
CPPFLAGS="$tmp_save_CPPFLAGS" |
|
CFLAGS="$tmp_save_CFLAGS" |
|
]) |
|
fi |
|
# |
|
fi |
|
]) |
|
|
|
|
|
dnl CARES_SHFUNC_SQUEEZE |
|
dnl ------------------------------------------------- |
|
dnl Declares a shell function squeeze() which removes |
|
dnl redundant whitespace out of a shell variable. |
|
|
|
AC_DEFUN([CARES_SHFUNC_SQUEEZE], [ |
|
squeeze() { |
|
_sqz_result="" |
|
eval _sqz_input=\[$][$]1 |
|
for _sqz_token in $_sqz_input; do |
|
if test -z "$_sqz_result"; then |
|
_sqz_result="$_sqz_token" |
|
else |
|
_sqz_result="$_sqz_result $_sqz_token" |
|
fi |
|
done |
|
eval [$]1=\$_sqz_result |
|
return 0 |
|
} |
|
]) |
|
|
|
|
|
dnl CARES_CHECK_CURLDEBUG |
|
dnl ------------------------------------------------- |
|
dnl Settings which depend on configure's curldebug given |
|
dnl option, and other additional configure pre-requisites. |
|
dnl Using the curl debug memory tracking feature in c-ares |
|
dnl is a hack that actually can only be used/enabled when |
|
dnl c-ares is built directly in curl's CVS tree, as a static |
|
dnl library or as a shared one on those systems on which |
|
dnl shared libraries support undefined symbols, along with |
|
dnl an equally configured libcurl. |
|
|
|
AC_DEFUN([CARES_CHECK_CURLDEBUG], [ |
|
AC_REQUIRE([CARES_SHFUNC_SQUEEZE])dnl |
|
cares_builddir=`pwd` |
|
supports_curldebug="unknown" |
|
if test "$want_curldebug" = "yes"; then |
|
if test "x$enable_shared" != "xno" && |
|
test "x$enable_shared" != "xyes"; then |
|
AC_MSG_WARN([unknown enable_shared setting.]) |
|
supports_curldebug="no" |
|
fi |
|
if test "x$enable_static" != "xno" && |
|
test "x$enable_static" != "xyes"; then |
|
AC_MSG_WARN([unknown enable_static setting.]) |
|
supports_curldebug="no" |
|
fi |
|
if test "$supports_curldebug" != "no"; then |
|
if test "$enable_shared" = "yes" && |
|
test "$need_no_undefined" = "yes"; then |
|
supports_curldebug="no" |
|
AC_MSG_WARN([shared library does not support undefined symbols.]) |
|
fi |
|
if test ! -f "$srcdir/../include/curl/curlbuild.h.dist"; then |
|
AC_MSG_WARN([c-ares source not embedded in curl's CVS tree.]) |
|
supports_curldebug="no" |
|
elif test ! -f "$srcdir/../include/curl/Makefile.in"; then |
|
AC_MSG_WARN([curl's buildconf has not been run.]) |
|
supports_curldebug="no" |
|
elif test ! -f "$cares_builddir/../libcurl.pc" || |
|
test ! -f "$cares_builddir/../include/curl/curlbuild.h"; then |
|
AC_MSG_WARN([curl's configure has not been run.]) |
|
supports_curldebug="no" |
|
elif test ! -f "$cares_builddir/../lib/curl_config.h"; then |
|
AC_MSG_WARN([libcurl's curl_config.h is missing.]) |
|
supports_curldebug="no" |
|
elif test ! -f "$cares_builddir/../config.status"; then |
|
AC_MSG_WARN([curl's config.status is missing.]) |
|
supports_curldebug="no" |
|
fi |
|
if test "$supports_curldebug" != "no"; then |
|
grep '^#define USE_ARES' "$cares_builddir/../lib/curl_config.h" >/dev/null |
|
if test "$?" -ne "0"; then |
|
AC_MSG_WARN([libcurl configured without c-ares support.]) |
|
supports_curldebug="no" |
|
fi |
|
fi |
|
if test "$supports_curldebug" != "no"; then |
|
grep 'CPPFLAGS.*CURLDEBUG' "$cares_builddir/../config.status" >/dev/null |
|
if test "$?" -ne "0"; then |
|
AC_MSG_WARN([libcurl configured without curldebug support.]) |
|
supports_curldebug="no" |
|
fi |
|
fi |
|
fi |
|
fi |
|
# |
|
if test "$want_curldebug" = "yes"; then |
|
AC_MSG_CHECKING([if curl debug memory tracking can be enabled]) |
|
test "$supports_curldebug" = "no" || supports_curldebug="yes" |
|
AC_MSG_RESULT([$supports_curldebug]) |
|
if test "$supports_curldebug" = "no"; then |
|
AC_MSG_WARN([cannot enable curl debug memory tracking.]) |
|
want_curldebug="no" |
|
fi |
|
fi |
|
# |
|
if test "$want_curldebug" = "yes"; then |
|
dnl TODO: Verify if the BUILDING_LIBCURL definition is still required. |
|
AC_DEFINE(BUILDING_LIBCURL, 1, [when building as static part of libcurl]) |
|
CPPFLAGS="-DCURLDEBUG $CPPFLAGS" |
|
squeeze CPPFLAGS |
|
fi |
|
# |
|
if test "$want_debug" = "yes"; then |
|
CPPFLAGS="-DDEBUGBUILD $CPPFLAGS" |
|
squeeze CPPFLAGS |
|
fi |
|
]) |
|
|
|
|
|
dnl CARES_CHECK_NO_UNDEFINED |
|
dnl ------------------------------------------------- |
|
dnl Checks if the -no-undefined flag must be used when |
|
dnl building shared libraries. This is required on all |
|
dnl systems on which shared libraries should not have |
|
dnl references to undefined symbols. This check should |
|
dnl not be done before AC-PROG-LIBTOOL. |
|
|
|
AC_DEFUN([CARES_CHECK_NO_UNDEFINED], [ |
|
AC_BEFORE([$0],[CARES_CHECK_CURLDEBUG])dnl |
|
AC_MSG_CHECKING([if shared libraries need -no-undefined]) |
|
need_no_undefined="no" |
|
case $host in |
|
*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-cegcc* | *-*-aix*) |
|
need_no_undefined="yes" |
|
;; |
|
esac |
|
if test "x$allow_undefined" = "xno"; then |
|
need_no_undefined="yes" |
|
elif test "x$allow_undefined_flag" = "xunsupported"; then |
|
need_no_undefined="yes" |
|
fi |
|
AC_MSG_RESULT($need_no_undefined) |
|
]) |
|
|
|
|
|
dnl CARES_CHECK_PROG_CC |
|
dnl ------------------------------------------------- |
|
dnl Check for compiler program, preventing CFLAGS and |
|
dnl CPPFLAGS from being unexpectedly changed. |
|
|
|
AC_DEFUN([CARES_CHECK_PROG_CC], [ |
|
ac_save_CFLAGS="$CFLAGS" |
|
ac_save_CPPFLAGS="$CPPFLAGS" |
|
AC_PROG_CC |
|
CFLAGS="$ac_save_CFLAGS" |
|
CPPFLAGS="$ac_save_CPPFLAGS" |
|
]) |
|
|
|
|
|
dnl CARES_CHECK_COMPILER_HALT_ON_ERROR |
|
dnl ------------------------------------------------- |
|
dnl Verifies if the compiler actually halts after the |
|
dnl compilation phase without generating any object |
|
dnl code file, when the source compiles with errors. |
|
|
|
AC_DEFUN([CARES_CHECK_COMPILER_HALT_ON_ERROR], [ |
|
AC_MSG_CHECKING([if compiler halts on compilation errors]) |
|
AC_COMPILE_IFELSE([ |
|
AC_LANG_PROGRAM([[ |
|
]],[[ |
|
force compilation error |
|
]]) |
|
],[ |
|
AC_MSG_RESULT([no]) |
|
AC_MSG_ERROR([compiler does not halt on compilation errors.]) |
|
],[ |
|
AC_MSG_RESULT([yes]) |
|
]) |
|
]) |
|
|
|
|
|
dnl CARES_CHECK_COMPILER_ARRAY_SIZE_NEGATIVE |
|
dnl ------------------------------------------------- |
|
dnl Verifies if the compiler actually halts after the |
|
dnl compilation phase without generating any object |
|
dnl code file, when the source code tries to define a |
|
dnl type for a constant array with negative dimension. |
|
|
|
AC_DEFUN([CARES_CHECK_COMPILER_ARRAY_SIZE_NEGATIVE], [ |
|
AC_REQUIRE([CARES_CHECK_COMPILER_HALT_ON_ERROR])dnl |
|
AC_MSG_CHECKING([if compiler halts on negative sized arrays]) |
|
AC_COMPILE_IFELSE([ |
|
AC_LANG_PROGRAM([[ |
|
typedef char bad_t[sizeof(char) == sizeof(int) ? -1 : -1 ]; |
|
]],[[ |
|
bad_t dummy; |
|
]]) |
|
],[ |
|
AC_MSG_RESULT([no]) |
|
AC_MSG_ERROR([compiler does not halt on negative sized arrays.]) |
|
],[ |
|
AC_MSG_RESULT([yes]) |
|
]) |
|
]) |
|
|
|
|
|
dnl CARES_CHECK_COMPILER_STRUCT_MEMBER_SIZE |
|
dnl ------------------------------------------------- |
|
dnl Verifies if the compiler is capable of handling the |
|
dnl size of a struct member, struct which is a function |
|
dnl result, as a compilation-time condition inside the |
|
dnl type definition of a constant array. |
|
|
|
AC_DEFUN([CARES_CHECK_COMPILER_STRUCT_MEMBER_SIZE], [ |
|
AC_REQUIRE([CARES_CHECK_COMPILER_ARRAY_SIZE_NEGATIVE])dnl |
|
AC_MSG_CHECKING([if compiler struct member size checking works]) |
|
tst_compiler_check_one_works="unknown" |
|
AC_COMPILE_IFELSE([ |
|
AC_LANG_PROGRAM([[ |
|
struct mystruct { |
|
int mi; |
|
char mc; |
|
struct mystruct *next; |
|
}; |
|
struct mystruct myfunc(); |
|
typedef char good_t1[sizeof(myfunc().mi) == sizeof(int) ? 1 : -1 ]; |
|
typedef char good_t2[sizeof(myfunc().mc) == sizeof(char) ? 1 : -1 ]; |
|
]],[[ |
|
good_t1 dummy1; |
|
good_t2 dummy2; |
|
]]) |
|
],[ |
|
tst_compiler_check_one_works="yes" |
|
],[ |
|
tst_compiler_check_one_works="no" |
|
sed 's/^/cc-src: /' conftest.$ac_ext >&6 |
|
sed 's/^/cc-err: /' conftest.err >&6 |
|
]) |
|
tst_compiler_check_two_works="unknown" |
|
AC_COMPILE_IFELSE([ |
|
AC_LANG_PROGRAM([[ |
|
struct mystruct { |
|
int mi; |
|
char mc; |
|
struct mystruct *next; |
|
}; |
|
struct mystruct myfunc(); |
|
typedef char bad_t1[sizeof(myfunc().mi) != sizeof(int) ? 1 : -1 ]; |
|
typedef char bad_t2[sizeof(myfunc().mc) != sizeof(char) ? 1 : -1 ]; |
|
]],[[ |
|
bad_t1 dummy1; |
|
bad_t2 dummy2; |
|
]]) |
|
],[ |
|
tst_compiler_check_two_works="no" |
|
],[ |
|
tst_compiler_check_two_works="yes" |
|
]) |
|
if test "$tst_compiler_check_one_works" = "yes" && |
|
test "$tst_compiler_check_two_works" = "yes"; then |
|
AC_MSG_RESULT([yes]) |
|
else |
|
AC_MSG_RESULT([no]) |
|
AC_MSG_ERROR([compiler fails struct member size checking.]) |
|
fi |
|
]) |
|
|
|
|
|
dnl CARES_CHECK_COMPILER_SYMBOL_HIDING |
|
dnl ------------------------------------------------- |
|
dnl Verify if compiler supports hiding library internal symbols, setting |
|
dnl shell variable supports_symbol_hiding value as appropriate, as well as |
|
dnl variables symbol_hiding_CFLAGS and symbol_hiding_EXTERN when supported. |
|
|
|
AC_DEFUN([CARES_CHECK_COMPILER_SYMBOL_HIDING], [ |
|
AC_REQUIRE([CARES_CHECK_COMPILER])dnl |
|
AC_BEFORE([$0],[CARES_CONFIGURE_SYMBOL_HIDING])dnl |
|
AC_MSG_CHECKING([if compiler supports hiding library internal symbols]) |
|
supports_symbol_hiding="no" |
|
symbol_hiding_CFLAGS="" |
|
symbol_hiding_EXTERN="" |
|
tmp_CFLAGS="" |
|
tmp_EXTERN="" |
|
case "$compiler_id" in |
|
CLANG) |
|
dnl All versions of clang support -fvisibility= |
|
tmp_EXTERN="__attribute__ ((__visibility__ (\"default\")))" |
|
tmp_CFLAGS="-fvisibility=hidden" |
|
supports_symbol_hiding="yes" |
|
;; |
|
GNU_C) |
|
dnl Only gcc 3.4 or later |
|
if test "$compiler_num" -ge "304"; then |
|
if $CC --help --verbose 2>&1 | grep fvisibility= > /dev/null ; then |
|
tmp_EXTERN="__attribute__ ((__visibility__ (\"default\")))" |
|
tmp_CFLAGS="-fvisibility=hidden" |
|
supports_symbol_hiding="yes" |
|
fi |
|
fi |
|
;; |
|
INTEL_UNIX_C) |
|
dnl Only icc 9.0 or later |
|
if test "$compiler_num" -ge "900"; then |
|
if $CC --help --verbose 2>&1 | grep fvisibility= > /dev/null ; then |
|
tmp_save_CFLAGS="$CFLAGS" |
|
CFLAGS="$CFLAGS -fvisibility=hidden" |
|
AC_LINK_IFELSE([ |
|
AC_LANG_PROGRAM([[ |
|
# include <stdio.h> |
|
]],[[ |
|
printf("icc fvisibility bug test"); |
|
]]) |
|
],[ |
|
tmp_EXTERN="__attribute__ ((__visibility__ (\"default\")))" |
|
tmp_CFLAGS="-fvisibility=hidden" |
|
supports_symbol_hiding="yes" |
|
]) |
|
CFLAGS="$tmp_save_CFLAGS" |
|
fi |
|
fi |
|
;; |
|
SUNPRO_C) |
|
if $CC 2>&1 | grep flags >/dev/null && $CC -flags | grep xldscope= >/dev/null ; then |
|
tmp_EXTERN="__global" |
|
tmp_CFLAGS="-xldscope=hidden" |
|
supports_symbol_hiding="yes" |
|
fi |
|
;; |
|
esac |
|
if test "$supports_symbol_hiding" = "yes"; then |
|
tmp_save_CFLAGS="$CFLAGS" |
|
CFLAGS="$tmp_save_CFLAGS $tmp_CFLAGS" |
|
squeeze CFLAGS |
|
AC_COMPILE_IFELSE([ |
|
AC_LANG_PROGRAM([[ |
|
$tmp_EXTERN char *dummy(char *buff); |
|
char *dummy(char *buff) |
|
{ |
|
if(buff) |
|
return ++buff; |
|
else |
|
return buff; |
|
} |
|
]],[[ |
|
char b[16]; |
|
char *r = dummy(&b[0]); |
|
if(r) |
|
return (int)*r; |
|
]]) |
|
],[ |
|
supports_symbol_hiding="yes" |
|
if test -f conftest.err; then |
|
grep 'visibility' conftest.err >/dev/null |
|
if test "$?" -eq "0"; then |
|
supports_symbol_hiding="no" |
|
fi |
|
fi |
|
],[ |
|
supports_symbol_hiding="no" |
|
echo " " >&6 |
|
sed 's/^/cc-src: /' conftest.$ac_ext >&6 |
|
sed 's/^/cc-err: /' conftest.err >&6 |
|
echo " " >&6 |
|
]) |
|
CFLAGS="$tmp_save_CFLAGS" |
|
fi |
|
if test "$supports_symbol_hiding" = "yes"; then |
|
AC_MSG_RESULT([yes]) |
|
symbol_hiding_CFLAGS="$tmp_CFLAGS" |
|
symbol_hiding_EXTERN="$tmp_EXTERN" |
|
else |
|
AC_MSG_RESULT([no]) |
|
fi |
|
]) |
|
|
|
|
|
dnl CARES_VAR_MATCH (VARNAME, VALUE) |
|
dnl ------------------------------------------------- |
|
dnl Verifies if shell variable VARNAME contains VALUE. |
|
dnl Contents of variable VARNAME and VALUE are handled |
|
dnl as whitespace separated lists of words. If at least |
|
dnl one word of VALUE is present in VARNAME the match |
|
dnl is considered positive, otherwise false. |
|
|
|
AC_DEFUN([CARES_VAR_MATCH], [ |
|
ac_var_match_word="no" |
|
for word1 in $[$1]; do |
|
for word2 in [$2]; do |
|
if test "$word1" = "$word2"; then |
|
ac_var_match_word="yes" |
|
fi |
|
done |
|
done |
|
]) |
|
|
|
|
|
dnl CARES_VAR_MATCH_IFELSE (VARNAME, VALUE, |
|
dnl [ACTION-IF-MATCH], [ACTION-IF-NOT-MATCH]) |
|
dnl ------------------------------------------------- |
|
dnl This performs a CURL_VAR_MATCH check and executes |
|
dnl first branch if the match is positive, otherwise |
|
dnl the second branch is executed. |
|
|
|
AC_DEFUN([CARES_VAR_MATCH_IFELSE], [ |
|
CARES_VAR_MATCH([$1],[$2]) |
|
if test "$ac_var_match_word" = "yes"; then |
|
ifelse($3,,:,[$3]) |
|
ifelse($4,,,[else |
|
$4]) |
|
fi |
|
]) |
|
|
|
|
|
dnl CARES_VAR_STRIP (VARNAME, VALUE) |
|
dnl ------------------------------------------------- |
|
dnl Contents of variable VARNAME and VALUE are handled |
|
dnl as whitespace separated lists of words. Each word |
|
dnl from VALUE is removed from VARNAME when present. |
|
|
|
AC_DEFUN([CARES_VAR_STRIP], [ |
|
AC_REQUIRE([CARES_SHFUNC_SQUEEZE])dnl |
|
ac_var_stripped="" |
|
for word1 in $[$1]; do |
|
ac_var_strip_word="no" |
|
for word2 in [$2]; do |
|
if test "$word1" = "$word2"; then |
|
ac_var_strip_word="yes" |
|
fi |
|
done |
|
if test "$ac_var_strip_word" = "no"; then |
|
ac_var_stripped="$ac_var_stripped $word1" |
|
fi |
|
done |
|
dnl squeeze whitespace out of result |
|
[$1]="$ac_var_stripped" |
|
squeeze [$1] |
|
]) |
|
|
|
|