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| author | Mike Kaganski <mike.kaganski@collabora.com> | 2017-10-18 07:53:21 +0300 |
|---|---|---|
| committer | Eike Rathke <erack@redhat.com> | 2017-10-19 21:55:09 +0200 |
| commit | 334a9f16cd1d1f9694f885c759903a41aa3d4833 (patch) | |
| tree | 4a40e181386131b6a535adecc2649cd61060ac3a /configure.ac | |
| parent | 2c41e9924120ec2e399de9b4d8248f25712ae400 (diff) | |
tdf#113211: fix calculations with big integers
... and munbers with few fractional bits
Change-Id: I86c3e8021e803fed498fae768ded9c9e5337c8bd
Reviewed-on: https://gerrit.libreoffice.org/43477
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Eike Rathke <erack@redhat.com>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index ac8dbc52463d..a330547d2b21 100644 --- a/configure.ac +++ b/configure.ac @@ -5795,6 +5795,15 @@ if test "$GCC" = "yes" -o "$COM_IS_CLANG" = TRUE; then AC_MSG_RESULT([no]) fi + AC_MSG_CHECKING([whether $CC supports __builtin_ffs]) + AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[ return __builtin_ffs(1); ]])],[HAVE_GCC_BUILTIN_FFS=TRUE],[]) + if test "$HAVE_GCC_BUILTIN_FFS" = "TRUE"; then + AC_MSG_RESULT([yes]) + AC_DEFINE(HAVE_GCC_BUILTIN_FFS) + else + AC_MSG_RESULT([no]) + fi + AC_MSG_CHECKING([whether $CC supports __attribute__((deprecated(message)))]) save_CFLAGS=$CFLAGS CFLAGS="$CFLAGS -Werror" @@ -5943,6 +5952,7 @@ fi AC_SUBST(HAVE_GCC_AVX) AC_SUBST(HAVE_GCC_STACK_PROTECTOR_STRONG) AC_SUBST(HAVE_GCC_BUILTIN_ATOMIC) +AC_SUBST(HAVE_GCC_BUILTIN_FFS) dnl =================================================================== dnl Identify the C++ library |