| # =========================================================================== |
| # https://www.gnu.org/software/autoconf-archive/ax_prog_cc_for_build.html |
| # =========================================================================== |
| # |
| # SYNOPSIS |
| # |
| # AX_PROG_CC_FOR_BUILD |
| # |
| # DESCRIPTION |
| # |
| # This macro searches for a C compiler that generates native executables, |
| # that is a C compiler that surely is not a cross-compiler. This can be |
| # useful if you have to generate source code at compile-time like for |
| # example GCC does. |
| # |
| # The macro sets the CC_FOR_BUILD and CPP_FOR_BUILD macros to anything |
| # needed to compile or link (CC_FOR_BUILD) and preprocess (CPP_FOR_BUILD). |
| # The value of these variables can be overridden by the user by specifying |
| # a compiler with an environment variable (like you do for standard CC). |
| # |
| # It also sets BUILD_EXEEXT and BUILD_OBJEXT to the executable and object |
| # file extensions for the build platform, and GCC_FOR_BUILD to `yes' if |
| # the compiler we found is GCC. All these variables but GCC_FOR_BUILD are |
| # substituted in the Makefile. |
| # |
| # LICENSE |
| # |
| # Copyright (c) 2008 Paolo Bonzini <bonzini@gnu.org> |
| # |
| # Copying and distribution of this file, with or without modification, are |
| # permitted in any medium without royalty provided the copyright notice |
| # and this notice are preserved. This file is offered as-is, without any |
| # warranty. |
| |
| #serial 18 |
| |
| AU_ALIAS([AC_PROG_CC_FOR_BUILD], [AX_PROG_CC_FOR_BUILD]) |
| AC_DEFUN([AX_PROG_CC_FOR_BUILD], [dnl |
| AC_REQUIRE([AC_PROG_CC])dnl |
| AC_REQUIRE([AC_PROG_CPP])dnl |
| AC_REQUIRE([AC_CANONICAL_BUILD])dnl |
| |
| dnl Use the standard macros, but make them use other variable names |
| dnl |
| pushdef([ac_cv_prog_CPP], ac_cv_build_prog_CPP)dnl |
| pushdef([ac_cv_prog_cc_c89], ac_cv_build_prog_cc_c89)dnl |
| pushdef([ac_cv_prog_gcc], ac_cv_build_prog_gcc)dnl |
| pushdef([ac_cv_prog_cc_works], ac_cv_build_prog_cc_works)dnl |
| pushdef([ac_cv_prog_cc_cross], ac_cv_build_prog_cc_cross)dnl |
| pushdef([ac_cv_prog_cc_g], ac_cv_build_prog_cc_g)dnl |
| pushdef([ac_cv_c_compiler_gnu], ac_cv_build_c_compiler_gnu)dnl |
| pushdef([ac_cv_exeext], ac_cv_build_exeext)dnl |
| pushdef([ac_cv_objext], ac_cv_build_objext)dnl |
| pushdef([ac_exeext], ac_build_exeext)dnl |
| pushdef([ac_objext], ac_build_objext)dnl |
| pushdef([CC], CC_FOR_BUILD)dnl |
| pushdef([CCDEPMODE], CCDEPMODE_FOR_BUILD)dnl |
| pushdef([CPP], CPP_FOR_BUILD)dnl |
| pushdef([GCC], GCC_FOR_BUILD)dnl |
| pushdef([CFLAGS], CFLAGS_FOR_BUILD)dnl |
| pushdef([CPPFLAGS], CPPFLAGS_FOR_BUILD)dnl |
| pushdef([EXEEXT], BUILD_EXEEXT)dnl |
| pushdef([LDFLAGS], LDFLAGS_FOR_BUILD)dnl |
| pushdef([OBJEXT], BUILD_OBJEXT)dnl |
| pushdef([host], build)dnl |
| pushdef([host_alias], build_alias)dnl |
| pushdef([host_cpu], build_cpu)dnl |
| pushdef([host_vendor], build_vendor)dnl |
| pushdef([host_os], build_os)dnl |
| pushdef([ac_cv_host], ac_cv_build)dnl |
| pushdef([ac_cv_host_alias], ac_cv_build_alias)dnl |
| pushdef([ac_cv_host_cpu], ac_cv_build_cpu)dnl |
| pushdef([ac_cv_host_vendor], ac_cv_build_vendor)dnl |
| pushdef([ac_cv_host_os], ac_cv_build_os)dnl |
| pushdef([ac_tool_prefix], ac_build_tool_prefix)dnl |
| pushdef([am_cv_CC_dependencies_compiler_type], am_cv_build_CC_dependencies_compiler_type)dnl |
| pushdef([am__fastdepCC_FALSE], am__fastdepCC_build_FALSE)dnl |
| pushdef([am__fastdepCC_TRUE], am__fastdepCC_build_TRUE)dnl |
| pushdef([am_cv_prog_cc_c_o], am_cv_build_prog_cc_c_o)dnl |
| pushdef([cross_compiling], cross_compiling_build)dnl |
| |
| cross_compiling_build=no |
| |
| ac_build_tool_prefix= |
| AS_IF([test -n "$build"], [ac_build_tool_prefix="$build-"], |
| [test -n "$build_alias"],[ac_build_tool_prefix="$build_alias-"]) |
| |
| AC_LANG_PUSH([C]) |
| AC_PROG_CC |
| _AC_COMPILER_EXEEXT |
| _AC_COMPILER_OBJEXT |
| AC_PROG_CPP |
| |
| dnl Restore the old definitions |
| dnl |
| popdef([cross_compiling])dnl |
| popdef([am_cv_prog_cc_c_o])dnl |
| popdef([am__fastdepCC_TRUE])dnl |
| popdef([am__fastdepCC_FALSE])dnl |
| popdef([am_cv_CC_dependencies_compiler_type])dnl |
| popdef([ac_tool_prefix])dnl |
| popdef([ac_cv_host_os])dnl |
| popdef([ac_cv_host_vendor])dnl |
| popdef([ac_cv_host_cpu])dnl |
| popdef([ac_cv_host_alias])dnl |
| popdef([ac_cv_host])dnl |
| popdef([host_os])dnl |
| popdef([host_vendor])dnl |
| popdef([host_cpu])dnl |
| popdef([host_alias])dnl |
| popdef([host])dnl |
| popdef([OBJEXT])dnl |
| popdef([LDFLAGS])dnl |
| popdef([EXEEXT])dnl |
| popdef([CPPFLAGS])dnl |
| popdef([CFLAGS])dnl |
| popdef([GCC])dnl |
| popdef([CPP])dnl |
| popdef([CCDEPMODE])dnl |
| popdef([CC])dnl |
| popdef([ac_objext])dnl |
| popdef([ac_exeext])dnl |
| popdef([ac_cv_objext])dnl |
| popdef([ac_cv_exeext])dnl |
| popdef([ac_cv_c_compiler_gnu])dnl |
| popdef([ac_cv_prog_cc_g])dnl |
| popdef([ac_cv_prog_cc_cross])dnl |
| popdef([ac_cv_prog_cc_works])dnl |
| popdef([ac_cv_prog_cc_c89])dnl |
| popdef([ac_cv_prog_gcc])dnl |
| popdef([ac_cv_prog_CPP])dnl |
| |
| dnl restore global variables ac_ext, ac_cpp, ac_compile, |
| dnl ac_link, ac_compiler_gnu (dependant on the current |
| dnl language after popping): |
| AC_LANG_POP([C]) |
| |
| dnl Finally, set Makefile variables |
| dnl |
| AC_SUBST(BUILD_EXEEXT)dnl |
| AC_SUBST(BUILD_OBJEXT)dnl |
| AC_SUBST([CFLAGS_FOR_BUILD])dnl |
| AC_SUBST([CPPFLAGS_FOR_BUILD])dnl |
| AC_SUBST([LDFLAGS_FOR_BUILD])dnl |
| ]) |
