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-rw-r--r--buildlib/tools.m45
1 files changed, 4 insertions, 1 deletions
diff --git a/buildlib/tools.m4 b/buildlib/tools.m4
index 442c0b6ae..9a8d744f2 100644
--- a/buildlib/tools.m4
+++ b/buildlib/tools.m4
@@ -91,6 +91,7 @@ AC_DEFUN(ah_NUM_PROCS,
AC_DEFUN(rc_GLIBC_VER,
[AC_MSG_CHECKING([glibc version])
+ AC_CACHE_VAL(ac_cv_glibc_ver,
dummy=if$$
cat <<_GLIBC_>$dummy.c
#include <features.h>
@@ -102,11 +103,13 @@ _GLIBC_
if test "$?" = 0; then
GLIBC_VER=`./$dummy`
AC_MSG_RESULT([$GLIBC_VER])
- GLIBC_VER="-$GLIBC_VER"
+ ac_cv_glibc_ver=$GLIBC_VER
else
AC_MSG_WARN([cannot determine GNU C library minor version number])
fi
rm -f $dummy $dummy.c
+ )
+ GLIBC_VER="-$ac_cv_glibc_ver"
AC_SUBST(GLIBC_VER)
])