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Fix configure's gcc version check. (#593)

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The existing AX_GCC_VERSION macro was deprecated. Using
https://stackoverflow.com/questions/7067385/find-the-gcc-version
as a template for an equivalent check.
This commit is contained in:
Pappy Van Winkle 2018-04-21 12:15:31 -05:00
parent b5127ab93a
commit 0bf5d4a928
1 changed files with 15 additions and 0 deletions
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15
autoconf/configure.ac
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@ -188,6 +188,21 @@ dnl look for programs we need to compile and run
AC_PROG_AWK
AC_PROG_CC
AC_PROG_CXX
AC_DEFUN([AX_GCC_VERSION], [
GCC_VERSION=""
AS_IF([test "x$GCC" = "xyes"],[
AS_IF([test "x$ax_gcc_version_option" != "xno"],[
AC_CACHE_CHECK([gcc version],[ax_cv_gcc_version],[
ax_cv_gcc_version="`$CC -dumpversion`"
AS_IF([test "x$ax_cv_gcc_version" = "x"],[
ax_cv_gcc_version=""
])
])
GCC_VERSION=$ax_cv_gcc_version
])
])
AC_SUBST([GCC_VERSION])
])
AX_GCC_VERSION
dnl if the compiler is gcc, test for gcc >= 4.8
AS_IF([test "x$GCC_VERSION" = "x"],[],