diff options
Diffstat (limited to 'mesalib/m4/ax_prog_cxx_for_build.m4')
| -rw-r--r-- | mesalib/m4/ax_prog_cxx_for_build.m4 | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/mesalib/m4/ax_prog_cxx_for_build.m4 b/mesalib/m4/ax_prog_cxx_for_build.m4 new file mode 100644 index 000000000..4a099f9fb --- /dev/null +++ b/mesalib/m4/ax_prog_cxx_for_build.m4 @@ -0,0 +1,123 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_prog_cxx_for_build.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_PROG_CXX_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 CXX_FOR_BUILD and CXXCPP_FOR_BUILD macros to anything +# needed to compile or link (CXX_FOR_BUILD) and preprocess (CXXCPP_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 CXX). +# +# LICENSE +# +# Copyright (c) 2008 Paolo Bonzini <bonzini@gnu.org> +# Copyright (c) 2012 Avionic Design GmbH +# +# Based on the AX_PROG_CC_FOR_BUILD macro by Paolo Bonzini. +# +# 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 5 + +AU_ALIAS([AC_PROG_CXX_FOR_BUILD], [AX_PROG_CXX_FOR_BUILD]) +AC_DEFUN([AX_PROG_CXX_FOR_BUILD], [dnl +AC_REQUIRE([AX_PROG_CC_FOR_BUILD])dnl +AC_REQUIRE([AC_PROG_CXX])dnl +AC_REQUIRE([AC_PROG_CXXCPP])dnl +AC_REQUIRE([AC_CANONICAL_SYSTEM])dnl +dnl +pushdef([AC_TRY_COMPILER], [ +cat > conftest.$ac_ext << EOF +#line __oline__ "configure" +#include "confdefs.h" +[$1] +EOF +# If we can't run a trivial program, we are probably using a cross +compiler. +# Fail miserably. +if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext} && (./conftest; +exit) 2>/dev/null; then + [$2]=yes +else + echo "configure: failed program was:" >&AC_FD_CC + cat conftest.$ac_ext >&AC_FD_CC + [$2]=no +fi +[$3]=no +rm -fr conftest*])dnl + +dnl Use the standard macros, but make them use other variable names +dnl +pushdef([cross_compiling], [#])dnl +pushdef([ac_cv_prog_CXXCPP], ac_cv_build_prog_CXXCPP)dnl +pushdef([ac_cv_prog_gxx], ac_cv_build_prog_gxx)dnl +pushdef([ac_cv_prog_cxx_works], ac_cv_build_prog_cxx_works)dnl +pushdef([ac_cv_prog_cxx_cross], ac_cv_build_prog_cxx_cross)dnl +pushdef([ac_cv_prog_cxx_g], ac_cv_build_prog_cxx_g)dnl +pushdef([CXX], CXX_FOR_BUILD)dnl +pushdef([CXXCPP], CXXCPP_FOR_BUILD)dnl +pushdef([CXXFLAGS], CXXFLAGS_FOR_BUILD)dnl +pushdef([CXXCPPFLAGS], CXXCPPFLAGS_FOR_BUILD)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_cxxcpp], ac_build_cxxcpp)dnl +pushdef([ac_compile], ac_build_compile)dnl +pushdef([ac_link], ac_build_link)dnl +pushdef([ac_tool_prefix], [#])dnl + +AC_PROG_CXX +AC_PROG_CXXCPP + +dnl Restore the old definitions +dnl +popdef([AC_TRY_COMPILER])dnl +popdef([ac_tool_prefix])dnl +popdef([ac_link])dnl +popdef([ac_compile])dnl +popdef([ac_cxxcpp])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([CXXCPPFLAGS])dnl +popdef([CXXFLAGS])dnl +popdef([CXXCPP])dnl +popdef([CXX])dnl +popdef([ac_cv_prog_cxx_g])dnl +popdef([ac_cv_prog_cxx_works])dnl +popdef([ac_cv_prog_cxx_cross])dnl +popdef([ac_cv_prog_gxx])dnl +popdef([cross_compiling])dnl + +dnl Finally, set Makefile variables +dnl +AC_SUBST([CXXFLAGS_FOR_BUILD])dnl +AC_SUBST([CXXCPPFLAGS_FOR_BUILD])dnl +]) |