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Check compiler version in configure.ac #470

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Apr 12, 2017
Merged

Check compiler version in configure.ac #470

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36 changes: 33 additions & 3 deletions configure.ac
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Original file line number Diff line number Diff line change
Expand Up @@ -8,15 +8,45 @@ AM_SILENT_RULES([yes])

LT_INIT
AC_CONFIG_MACRO_DIR([m4])

AC_PROG_CXX(clang++ g++ c++)
AX_CXX_COMPILE_STDCXX_11([noext],[mandatory])
AC_LANG(C++)

AC_MSG_CHECKING([if compiler is new enough])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([], [[
#if defined(__clang__)

#define CLANG_VERSION (__clang_major__ * 10000 \
+ __clang_minor__ * 100 \
+ __clang_patchlevel__)
#if CLANG_VERSION < 30300
#error
#endif

#else

#define GCC_VERSION (__GNUC__ * 10000 \
+ __GNUC_MINOR__ * 100 \
+ __GNUC_PATCHLEVEL__)
#if GCC_VERSION < 40900
#error
#endif

#endif
]])],
[COMPILER_OK=yes], [COMPILER_OK=no])
AC_MSG_RESULT([$COMPILER_OK])
if test "x$COMPILER_OK" = "xno"; then
AC_MSG_ERROR([compiler is too old; GCC 4.9 or later and Clang 3.3 or later are supported])
fi

AC_PROG_RANLIB
AC_PROG_CC
AC_PROG_LEX
AC_PROG_YACC
AC_PROG_RANLIB
AX_CXX_COMPILE_STDCXX_11([noext],[mandatory])
AC_LANG(C++)

AM_PATH_PYTHON

AC_CHECK_FUNCS([clock_gettime])
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