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125 lines
3.9 KiB
125 lines
3.9 KiB
# =========================================================================== |
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# http://www.gnu.org/software/autoconf-archive/ax_prog_cc_for_build.html |
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# =========================================================================== |
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# |
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# SYNOPSIS |
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# |
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# AX_PROG_CC_FOR_BUILD |
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# |
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# DESCRIPTION |
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# |
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# This macro searches for a C compiler that generates native executables, |
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# that is a C compiler that surely is not a cross-compiler. This can be |
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# useful if you have to generate source code at compile-time like for |
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# example GCC does. |
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# |
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# The macro sets the CC_FOR_BUILD and CPP_FOR_BUILD macros to anything |
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# needed to compile or link (CC_FOR_BUILD) and preprocess (CPP_FOR_BUILD). |
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# The value of these variables can be overridden by the user by specifying |
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# a compiler with an environment variable (like you do for standard CC). |
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# |
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# It also sets BUILD_EXEEXT and BUILD_OBJEXT to the executable and object |
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# file extensions for the build platform, and GCC_FOR_BUILD to `yes' if |
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# the compiler we found is GCC. All these variables but GCC_FOR_BUILD are |
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# substituted in the Makefile. |
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# |
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# LICENSE |
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# |
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# Copyright (c) 2008 Paolo Bonzini <bonzini@gnu.org> |
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# |
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# Copying and distribution of this file, with or without modification, are |
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# permitted in any medium without royalty provided the copyright notice |
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# and this notice are preserved. This file is offered as-is, without any |
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# warranty. |
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#serial 8 |
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AU_ALIAS([AC_PROG_CC_FOR_BUILD], [AX_PROG_CC_FOR_BUILD]) |
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AC_DEFUN([AX_PROG_CC_FOR_BUILD], [dnl |
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AC_REQUIRE([AC_PROG_CC])dnl |
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AC_REQUIRE([AC_PROG_CPP])dnl |
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AC_REQUIRE([AC_EXEEXT])dnl |
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AC_REQUIRE([AC_CANONICAL_HOST])dnl |
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dnl Use the standard macros, but make them use other variable names |
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dnl |
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pushdef([ac_cv_prog_CPP], ac_cv_build_prog_CPP)dnl |
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pushdef([ac_cv_prog_gcc], ac_cv_build_prog_gcc)dnl |
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pushdef([ac_cv_prog_cc_works], ac_cv_build_prog_cc_works)dnl |
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pushdef([ac_cv_prog_cc_cross], ac_cv_build_prog_cc_cross)dnl |
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pushdef([ac_cv_prog_cc_g], ac_cv_build_prog_cc_g)dnl |
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pushdef([ac_cv_exeext], ac_cv_build_exeext)dnl |
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pushdef([ac_cv_objext], ac_cv_build_objext)dnl |
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pushdef([ac_exeext], ac_build_exeext)dnl |
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pushdef([ac_objext], ac_build_objext)dnl |
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pushdef([CC], CC_FOR_BUILD)dnl |
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pushdef([CPP], CPP_FOR_BUILD)dnl |
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pushdef([CFLAGS], CFLAGS_FOR_BUILD)dnl |
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pushdef([CPPFLAGS], CPPFLAGS_FOR_BUILD)dnl |
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pushdef([LDFLAGS], LDFLAGS_FOR_BUILD)dnl |
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pushdef([host], build)dnl |
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pushdef([host_alias], build_alias)dnl |
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pushdef([host_cpu], build_cpu)dnl |
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pushdef([host_vendor], build_vendor)dnl |
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pushdef([host_os], build_os)dnl |
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pushdef([ac_cv_host], ac_cv_build)dnl |
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pushdef([ac_cv_host_alias], ac_cv_build_alias)dnl |
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pushdef([ac_cv_host_cpu], ac_cv_build_cpu)dnl |
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pushdef([ac_cv_host_vendor], ac_cv_build_vendor)dnl |
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pushdef([ac_cv_host_os], ac_cv_build_os)dnl |
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pushdef([ac_cpp], ac_build_cpp)dnl |
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pushdef([ac_compile], ac_build_compile)dnl |
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pushdef([ac_link], ac_build_link)dnl |
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save_cross_compiling=$cross_compiling |
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save_ac_tool_prefix=$ac_tool_prefix |
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cross_compiling=no |
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ac_tool_prefix= |
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AC_PROG_CC |
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AC_PROG_CPP |
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AC_EXEEXT |
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ac_tool_prefix=$save_ac_tool_prefix |
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cross_compiling=$save_cross_compiling |
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dnl Restore the old definitions |
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dnl |
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popdef([ac_link])dnl |
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popdef([ac_compile])dnl |
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popdef([ac_cpp])dnl |
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popdef([ac_cv_host_os])dnl |
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popdef([ac_cv_host_vendor])dnl |
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popdef([ac_cv_host_cpu])dnl |
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popdef([ac_cv_host_alias])dnl |
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popdef([ac_cv_host])dnl |
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popdef([host_os])dnl |
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popdef([host_vendor])dnl |
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popdef([host_cpu])dnl |
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popdef([host_alias])dnl |
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popdef([host])dnl |
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popdef([LDFLAGS])dnl |
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popdef([CPPFLAGS])dnl |
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popdef([CFLAGS])dnl |
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popdef([CPP])dnl |
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popdef([CC])dnl |
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popdef([ac_objext])dnl |
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popdef([ac_exeext])dnl |
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popdef([ac_cv_objext])dnl |
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popdef([ac_cv_exeext])dnl |
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popdef([ac_cv_prog_cc_g])dnl |
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popdef([ac_cv_prog_cc_cross])dnl |
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popdef([ac_cv_prog_cc_works])dnl |
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popdef([ac_cv_prog_gcc])dnl |
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popdef([ac_cv_prog_CPP])dnl |
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dnl Finally, set Makefile variables |
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dnl |
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BUILD_EXEEXT=$ac_build_exeext |
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BUILD_OBJEXT=$ac_build_objext |
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AC_SUBST(BUILD_EXEEXT)dnl |
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AC_SUBST(BUILD_OBJEXT)dnl |
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AC_SUBST([CFLAGS_FOR_BUILD])dnl |
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AC_SUBST([CPPFLAGS_FOR_BUILD])dnl |
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AC_SUBST([LDFLAGS_FOR_BUILD])dnl |
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])
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