wolfssl/m4/ax_compiler_version.m4

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# ===========================================================================
# https://github.com/BrianAker/ddm4/
# ===========================================================================
#
# SYNOPSIS
#
# AX_COMPILER_VERSION()
#
# DESCRIPTION
#
# Capture version of C/C++ compiler
#
# LICENSE
#
# Copyright (C) 2012 Brian Aker
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
#
# * The names of its contributors may not be used to endorse or
# promote products derived from this software without specific prior
# written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#serial 5
AC_DEFUN([_C_COMPILER_VERSION],
[AC_MSG_CHECKING([C Compiler version])
AS_CASE(["$ax_cv_c_compiler_vendor"],
[sun],[ax_c_compiler_version=`$CC -V 2>&1 | sed 1q`],
[intel],[ax_c_compiler_version=`$CC --version 2>&1 | sed 1q`],
[clang],[ax_c_compiler_version=`$CC --version 2>&1 | sed 1q`],
[gnu],[ax_c_compiler_version=`$CC --version | sed 1q`],
[mingw],[ax_c_compiler_version=`$CC --version | sed 1q`],
[ax_c_compiler_version="unknown: $ax_cv_c_compiler_vendor"])
AC_MSG_RESULT(["$ax_c_compiler_version"])
AC_SUBST([CC_VERSION_VENDOR],["$ax_cv_c_compiler_vendor"])
AC_SUBST([CC_VERSION],["$ax_c_compiler_version"])
])
AC_DEFUN([_CXX_COMPILER_VERSION],
[AC_MSG_CHECKING([C++ Compiler version])
AS_CASE(["$ax_cv_c_compiler_vendor"],
[sun],[ax_cxx_compiler_version=`$CXX -V 2>&1 | sed 1q`],
[intel],[ax_cxx_compiler_version=`$CXX --version 2>&1 | sed 1q`],
[clang],[ax_cxx_compiler_version=`$CXX --version 2>&1 | sed 1q`],
[gnu],[ax_cxx_compiler_version=`$CXX --version | sed 1q`],
[mingw],[ax_cxx_compiler_version=`$CXX --version | sed 1q`],
[ax_cxx_compiler_version="unknown: $ax_cv_c_compiler_vendor"])
AC_MSG_RESULT(["$ax_cxx_compiler_version"])
AC_SUBST([CXX_VERSION_VENDOR],["$ax_cv_c_compiler_vendor"])
AC_SUBST([CXX_VERSION],["$ax_cxx_compiler_version"])
])
AC_DEFUN([AX_COMPILER_VERSION],
[AC_REQUIRE([AX_COMPILER_VENDOR])
AC_MSG_CHECKING([MINGW])
AC_CHECK_DECL([__MINGW32__],
[MINGW=yes
ax_c_compiler_version_vendor=mingw],
[MINGW=no])
AC_MSG_RESULT([$MINGW])
AC_REQUIRE([_C_COMPILER_VERSION])
AC_REQUIRE([_CXX_COMPILER_VERSION])
AS_IF([test "x$GCC" = xyes],
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#if !defined(__GNUC__) || (__GNUC__ < 4) || ((__GNUC__ >= 4) && (__GNUC_MINOR__ < 7))
# error GCC is Too Old!
#endif
]])],
[ac_c_gcc_recent=yes],
[ac_c_gcc_recent=no])
])
])