option to specify dis(activation) of picky compiler warnings. If option is specified, it will be honored independant of the --(dis|en)able-debug option. If option is not specified, it will follow --(dis|en)able-debug setting, whose default is disabled if not specified.pull/1/head
Yang Tse
17 years ago
parent
6503efa62a
commit
79f844f672
4 changed files with 419 additions and 234 deletions
@ -0,0 +1,319 @@ |
||||
#*************************************************************************** |
||||
# $Id$ |
||||
# |
||||
# Copyright (C) 2008 by Daniel Stenberg et al |
||||
# |
||||
# Permission to use, copy, modify, and distribute this software and its |
||||
# documentation for any purpose and without fee is hereby granted, provided |
||||
# that the above copyright notice appear in all copies and that both that |
||||
# copyright notice and this permission notice appear in supporting |
||||
# documentation, and that the name of M.I.T. not be used in advertising or |
||||
# publicity pertaining to distribution of the software without specific, |
||||
# written prior permission. M.I.T. makes no representations about the |
||||
# suitability of this software for any purpose. It is provided "as is" |
||||
# without express or implied warranty. |
||||
# |
||||
#*************************************************************************** |
||||
|
||||
# File version for 'aclocal' use. Keep it a single number. |
||||
# serial 1 |
||||
|
||||
|
||||
dnl CARES_CHECK_COMPILER |
||||
dnl ------------------------------------------------- |
||||
dnl Verify if the C compiler being used is known. |
||||
|
||||
AC_DEFUN([CARES_CHECK_COMPILER], [ |
||||
# |
||||
compiler_id="unknown" |
||||
compiler_num="0" |
||||
# |
||||
CARES_CHECK_COMPILER_DEC |
||||
CARES_CHECK_COMPILER_IBM |
||||
CARES_CHECK_COMPILER_INTEL |
||||
CARES_CHECK_COMPILER_GNU |
||||
# |
||||
]) |
||||
|
||||
|
||||
dnl CARES_CHECK_COMPILER_DEC |
||||
dnl ------------------------------------------------- |
||||
dnl Verify if the C compiler being used is DEC's. |
||||
|
||||
AC_DEFUN([CARES_CHECK_COMPILER_DEC], [ |
||||
AC_MSG_CHECKING([whether we are using the DEC/Compaq C compiler]) |
||||
CURL_CHECK_DEF([__DECC], [], [silent]) |
||||
CURL_CHECK_DEF([__DECC_VER], [], [silent]) |
||||
if test "$curl_cv_have_def___DECC" = "yes" && |
||||
test "$curl_cv_have_def___DECC_VER" = "yes"; then |
||||
AC_MSG_RESULT([yes]) |
||||
compiler_id="DECC" |
||||
else |
||||
AC_MSG_RESULT([no]) |
||||
fi |
||||
]) |
||||
|
||||
|
||||
dnl CARES_CHECK_COMPILER_GNU |
||||
dnl ------------------------------------------------- |
||||
dnl Verify if the C compiler being used is GNU's. |
||||
|
||||
AC_DEFUN([CARES_CHECK_COMPILER_GNU], [ |
||||
AC_REQUIRE([CARES_CHECK_COMPILER_INTEL])dnl |
||||
# |
||||
AC_MSG_CHECKING([whether we are using the GNU C compiler]) |
||||
CURL_CHECK_DEF([__GNUC__], [], [silent]) |
||||
if test "$curl_cv_have_def___GNUC__" = "yes" && |
||||
test "$compiler_id" = "unknown"; then |
||||
AC_MSG_RESULT([yes]) |
||||
compiler_id="GNUC" |
||||
gccver=`$CC -dumpversion` |
||||
gccvhi=`echo $gccver | cut -d . -f1` |
||||
gccvlo=`echo $gccver | cut -d . -f2` |
||||
compiler_num=`(expr $gccvhi "*" 100 + $gccvlo) 2>/dev/null` |
||||
else |
||||
AC_MSG_RESULT([no]) |
||||
fi |
||||
]) |
||||
|
||||
|
||||
dnl CARES_CHECK_COMPILER_IBM |
||||
dnl ------------------------------------------------- |
||||
dnl Verify if the C compiler being used is IBM's. |
||||
|
||||
AC_DEFUN([CARES_CHECK_COMPILER_IBM], [ |
||||
AC_MSG_CHECKING([whether we are using the IBM C compiler]) |
||||
CURL_CHECK_DEF([__IBMC__], [], [silent]) |
||||
if test "$curl_cv_have_def___IBMC__" = "yes"; then |
||||
AC_MSG_RESULT([yes]) |
||||
compiler_id="IBMC" |
||||
else |
||||
AC_MSG_RESULT([no]) |
||||
fi |
||||
]) |
||||
|
||||
|
||||
dnl CARES_CHECK_COMPILER_INTEL |
||||
dnl ------------------------------------------------- |
||||
dnl Verify if the C compiler being used is Intel's. |
||||
|
||||
AC_DEFUN([CARES_CHECK_COMPILER_INTEL], [ |
||||
AC_BEFORE([$0],[CARES_CHECK_COMPILER_GNU])dnl |
||||
AC_MSG_CHECKING([whether we are using the Intel C compiler]) |
||||
CURL_CHECK_DEF([__INTEL_COMPILER], [], [silent]) |
||||
if test "$curl_cv_have_def___INTEL_COMPILER" = "yes"; then |
||||
AC_MSG_RESULT([yes]) |
||||
CURL_CHECK_DEF([__unix__], [], [silent]) |
||||
if test "$curl_cv_have_def___unix__" = "yes"; then |
||||
compiler_id="ICC_unix" |
||||
else |
||||
compiler_id="ICC_windows" |
||||
fi |
||||
compiler_num="$curl_cv_def___INTEL_COMPILER" |
||||
else |
||||
AC_MSG_RESULT([no]) |
||||
fi |
||||
]) |
||||
|
||||
|
||||
dnl CARES_PROCESS_CC_BASIC_OPTS |
||||
dnl ------------------------------------------------- |
||||
dnl Sets compiler options/flags which are independant |
||||
dnl of configure's debug or warnings options. |
||||
|
||||
AC_DEFUN([CARES_PROCESS_CC_BASIC_OPTS], [ |
||||
AC_REQUIRE([CARES_CHECK_COMPILER])dnl |
||||
# |
||||
if test "$compiler_id" = "DECC"; then |
||||
dnl Select strict ANSI C compiler mode |
||||
CFLAGS="$CFLAGS -std1" |
||||
dnl Turn off optimizer ANSI C aliasing rules |
||||
CFLAGS="$CFLAGS -noansi_alias" |
||||
dnl Generate warnings for missing function prototypes |
||||
CFLAGS="$CFLAGS -warnprotos" |
||||
dnl Change some warnings into fatal errors |
||||
CFLAGS="$CFLAGS -msg_fatal toofewargs,toomanyargs" |
||||
fi |
||||
# |
||||
if test "$compiler_id" = "IBMC"; then |
||||
dnl Ensure that compiler optimizations are always thread-safe. |
||||
CFLAGS="$CFLAGS -qthreaded" |
||||
dnl Disable type based strict aliasing optimizations, using worst |
||||
dnl case aliasing assumptions when compiling. Type based aliasing |
||||
dnl would restrict the lvalues that could be safely used to access |
||||
dnl a data object. |
||||
CFLAGS="$CFLAGS -qnoansialias" |
||||
dnl Force compiler to stop after the compilation phase, without |
||||
dnl generating an object code file when compilation has errors. |
||||
CFLAGS="$CFLAGS -qhalt=e" |
||||
fi |
||||
# |
||||
if test "$compiler_id" = "ICC_unix"; then |
||||
dnl On unix this compiler uses gcc's header files, so |
||||
dnl we select ANSI C89 dialect plus GNU extensions. |
||||
CPPFLAGS="$CPPFLAGS -std=gnu89" |
||||
dnl Change some warnings into errors |
||||
dnl #140: too many arguments in function call |
||||
dnl #147: declaration is incompatible with 'previous one' |
||||
dnl #165: too few arguments in function call |
||||
dnl #266: function declared implicitly |
||||
CPPFLAGS="$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 |
||||
if test "$compiler_num" -lt "910"; then |
||||
CPPFLAGS="$CPPFLAGS -wd 279" |
||||
fi |
||||
CPPFLAGS="$CPPFLAGS -wd 981,1469" |
||||
dnl Disable use of ANSI C aliasing rules in optimizations |
||||
CFLAGS="$CFLAGS -no-ansi-alias" |
||||
dnl Disable floating point optimizations |
||||
CFLAGS="$CFLAGS -fp-model precise" |
||||
fi |
||||
]) |
||||
|
||||
|
||||
dnl CARES_PROCESS_CC_DEBUG_OPTS |
||||
dnl ------------------------------------------------- |
||||
dnl Sets compiler options/flags and other settings |
||||
dnl which depend on configure's debug given option. |
||||
|
||||
AC_DEFUN([CARES_PROCESS_CC_DEBUG_OPTS], [ |
||||
AC_REQUIRE([CARES_CHECK_OPTION_DEBUG])dnl |
||||
AC_REQUIRE([CARES_CHECK_COMPILER])dnl |
||||
# |
||||
if test "$want_debug" = "yes"; then |
||||
CFLAGS="$CFLAGS -g" |
||||
fi |
||||
# |
||||
if test "$want_debug" = "no"; then |
||||
dnl strip off optimizer flags |
||||
NEWFLAGS="" |
||||
for flag in $CFLAGS; do |
||||
case "$flag" in |
||||
-O*) |
||||
dnl echo "cut off $flag" |
||||
;; |
||||
*) |
||||
NEWFLAGS="$NEWFLAGS $flag" |
||||
;; |
||||
esac |
||||
done |
||||
CFLAGS=$NEWFLAGS |
||||
fi |
||||
# |
||||
]) |
||||
|
||||
|
||||
dnl CARES_PROCESS_CC_WARNING_OPTS |
||||
dnl ------------------------------------------------- |
||||
dnl Sets compiler options/flags which depend on |
||||
dnl configure's warnings given option. |
||||
|
||||
AC_DEFUN([CARES_PROCESS_CC_WARNING_OPTS], [ |
||||
AC_REQUIRE([CARES_CHECK_OPTION_WARNINGS])dnl |
||||
AC_REQUIRE([CARES_CHECK_COMPILER])dnl |
||||
# |
||||
if test "$compiler_id" = "DECC"; then |
||||
if test "$want_warnings" = "yes"; then |
||||
dnl Select a higher warning level than default level2 |
||||
CFLAGS="$CFLAGS -msg_enable level3" |
||||
fi |
||||
fi |
||||
# |
||||
if test "$compiler_id" = "ICC_unix"; then |
||||
if test "$want_warnings" = "yes"; then |
||||
if test "$compiler_num" -gt "600"; then |
||||
dnl Show errors, warnings, and remarks |
||||
CPPFLAGS="$CPPFLAGS -Wall" |
||||
dnl Perform extra compile-time code checking |
||||
CPPFLAGS="$CPPFLAGS -Wcheck" |
||||
fi |
||||
fi |
||||
fi |
||||
# |
||||
if test "$compiler_id" = "GNUC"; then |
||||
# |
||||
# FIXME: Some of these warnings should be changed into errors |
||||
# and moved to CARES-PROCESS-CC-BASIC-OPTS |
||||
# |
||||
if test "$want_warnings" = "yes"; then |
||||
dnl this is a set of options we believe *ALL* gcc versions support: |
||||
WARN="-W -Wall -Wwrite-strings -pedantic -Wpointer-arith -Wnested-externs -Winline -Wmissing-prototypes" |
||||
dnl -Wcast-align is a bit too annoying on all gcc versions ;-) |
||||
if test "$compiler_num" -ge "207"; then |
||||
dnl gcc 2.7 or later |
||||
WARN="$WARN -Wmissing-declarations" |
||||
fi |
||||
if test "$compiler_num" -gt "295"; then |
||||
dnl only if the compiler is newer than 2.95 since we got lots of |
||||
dnl "`_POSIX_C_SOURCE' is not defined" in system headers with |
||||
dnl gcc 2.95.4 on FreeBSD 4.9! |
||||
WARN="$WARN -Wundef -Wno-long-long -Wsign-compare -Wshadow -Wno-multichar" |
||||
fi |
||||
if test "$compiler_num" -ge "296"; then |
||||
dnl gcc 2.96 or later |
||||
WARN="$WARN -Wfloat-equal" |
||||
fi |
||||
if test "$compiler_num" -gt "296"; then |
||||
dnl this option does not exist in 2.96 |
||||
WARN="$WARN -Wno-format-nonliteral" |
||||
fi |
||||
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. |
||||
if test "$compiler_num" -ge "303"; then |
||||
dnl gcc 3.3 and later |
||||
WARN="$WARN -Wendif-labels -Wstrict-prototypes" |
||||
fi |
||||
if test "$compiler_num" -ge "304"; then |
||||
# try these on gcc 3.4 |
||||
WARN="$WARN -Wdeclaration-after-statement" |
||||
fi |
||||
for flag in $CPPFLAGS; do |
||||
case "$flag" in |
||||
-I*) |
||||
dnl Include path, provide a -isystem option for the same dir |
||||
dnl to prevent warnings in those dirs. The -isystem was not very |
||||
dnl reliable on earlier gcc versions. |
||||
add=`echo $flag | sed 's/^-I/-isystem /g'` |
||||
WARN="$WARN $add" |
||||
;; |
||||
esac |
||||
done |
||||
CFLAGS="$CFLAGS $WARN" |
||||
AC_MSG_NOTICE([Added this set of compiler options: $WARN]) |
||||
fi |
||||
fi |
||||
# |
||||
]) |
||||
|
||||
|
||||
dnl CARES_PROCESS_DEBUG_BUILD_OPTS |
||||
dnl ------------------------------------------------- |
||||
dnl Settings which depend on configure's debug given |
||||
dnl option, and further configure the build process. |
||||
|
||||
AC_DEFUN([CARES_PROCESS_DEBUG_BUILD_OPTS], [ |
||||
AC_REQUIRE([CARES_CHECK_OPTION_DEBUG])dnl |
||||
AC_BEFORE([$0],[AC_PROG_LIBTOOL])dnl |
||||
# |
||||
if test "$want_debug" = "yes"; then |
||||
|
||||
dnl when doing the debug stuff, use static library only |
||||
AC_DISABLE_SHARED |
||||
|
||||
debugbuild="yes" |
||||
|
||||
dnl the entire --enable-debug is a hack that lives and runs on top of |
||||
dnl libcurl stuff so this BUILDING_LIBCURL is not THAT much uglier |
||||
AC_DEFINE(BUILDING_LIBCURL, 1, [when building as static part of libcurl]) |
||||
|
||||
CPPFLAGS="$CPPFLAGS -DCURLDEBUG -I$srcdir/../include" |
||||
fi |
||||
# |
||||
]) |
||||
|
||||
|
||||
@ -0,0 +1,86 @@ |
||||
#*************************************************************************** |
||||
# $Id$ |
||||
# |
||||
# Copyright (C) 2008 by Daniel Stenberg et al |
||||
# |
||||
# Permission to use, copy, modify, and distribute this software and its |
||||
# documentation for any purpose and without fee is hereby granted, provided |
||||
# that the above copyright notice appear in all copies and that both that |
||||
# copyright notice and this permission notice appear in supporting |
||||
# documentation, and that the name of M.I.T. not be used in advertising or |
||||
# publicity pertaining to distribution of the software without specific, |
||||
# written prior permission. M.I.T. makes no representations about the |
||||
# suitability of this software for any purpose. It is provided "as is" |
||||
# without express or implied warranty. |
||||
# |
||||
#*************************************************************************** |
||||
|
||||
# File version for 'aclocal' use. Keep it a single number. |
||||
# serial 1 |
||||
|
||||
|
||||
dnl CARES_CHECK_OPTION_DEBUG |
||||
dnl ------------------------------------------------- |
||||
dnl Verify if configure has been invoked with option |
||||
dnl --enable-debug or --disable-debug, and set shell |
||||
dnl variable want_debug value as appropriate. |
||||
|
||||
AC_DEFUN([CARES_CHECK_OPTION_DEBUG], [ |
||||
AC_BEFORE([$0],[CARES_CHECK_OPTION_WARNINGS])dnl |
||||
AC_BEFORE([$0],[AC_PROG_CC])dnl |
||||
AC_MSG_CHECKING([whether to enable debug build options]) |
||||
OPT_DEBUG_BUILD="default" |
||||
AC_ARG_ENABLE(debug, |
||||
AC_HELP_STRING([--enable-debug],[Enable debug build options]) |
||||
AC_HELP_STRING([--disable-debug],[Disable debug build options]), |
||||
OPT_DEBUG_BUILD=$enableval) |
||||
case "$OPT_DEBUG_BUILD" in |
||||
no) |
||||
dnl --disable-debug option used |
||||
want_debug="no" |
||||
;; |
||||
default) |
||||
dnl configure option not specified |
||||
want_debug="no" |
||||
;; |
||||
*) |
||||
dnl --enable-debug option used |
||||
want_debug="yes" |
||||
;; |
||||
esac |
||||
AC_MSG_RESULT([$want_debug]) |
||||
]) |
||||
|
||||
|
||||
dnl CARES_CHECK_OPTION_WARNINGS |
||||
dnl ------------------------------------------------- |
||||
dnl Verify if configure has been invoked with option |
||||
dnl --enable-warnings or --disable-warnings, and set |
||||
DNL shell variable want_warnings as appropriate. |
||||
|
||||
AC_DEFUN([CARES_CHECK_OPTION_WARNINGS], [ |
||||
AC_REQUIRE([CARES_CHECK_OPTION_DEBUG])dnl |
||||
AC_BEFORE([$0],[AC_PROG_CC])dnl |
||||
AC_MSG_CHECKING([whether to enable strict compiler warnings]) |
||||
OPT_COMPILER_WARNINGS="default" |
||||
AC_ARG_ENABLE(warnings, |
||||
AC_HELP_STRING([--enable-warnings],[Enable strict compiler warnings]) |
||||
AC_HELP_STRING([--disable-warnings],[Disable strict compiler warnings]), |
||||
OPT_COMPILER_WARNINGS=$enableval) |
||||
case "$OPT_COMPILER_WARNINGS" in |
||||
no) |
||||
dnl --disable-warnings option used |
||||
want_warnings="no" |
||||
;; |
||||
default) |
||||
dnl configure option not specified, so |
||||
dnl use same setting as --enable-debug |
||||
want_warnings="$want_debug" |
||||
;; |
||||
*) |
||||
dnl --enable-warnings option used |
||||
want_warnings="yes" |
||||
;; |
||||
esac |
||||
AC_MSG_RESULT([$want_warnings]) |
||||
]) |
||||
Loading…
Reference in new issue