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- From f020fe05a20dfcd16cd7df833dcf3cdeef770538 Mon Sep 17 00:00:00 2001
- From: Carlos Santos <casantos@datacom.ind.br>
- Date: Thu, 11 Feb 2016 10:58:35 -0200
- Subject: [PATCH 2/2] configure.ac: check if libatomic is needed
- Compilation of protobuf for PowerPC and SPARC may fail due to missing
- references to __atomic_fetch_add_4 and __atomic_compare_exchange_4.
- The __atomic_*() intrinsics for all sizes are provided by libatomic when
- gcc is >= 4.8. This can be achieved by adding this to configure.ac:
- AC_SEARCH_LIBS([__atomic_fetch_add_4], [atomic])
- Signed-off-by: Carlos Santos <casantos@datacom.ind.br>
- ---
- configure.ac | 2 ++
- 1 file changed, 2 insertions(+)
- diff --git a/configure.ac b/configure.ac
- index c07067c..88d4a0d 100644
- --- a/configure.ac
- +++ b/configure.ac
- @@ -160,6 +160,8 @@ AM_CONDITIONAL([HAVE_PTHREAD], [test "x$acx_pthread_ok" = "xyes"])
- # We still keep this for improving pbconfig.h for unsupported platforms.
- AC_CXX_STL_HASH
-
- +AC_SEARCH_LIBS([__atomic_load_4], [atomic])
- +
- case "$target_os" in
- mingw* | cygwin* | win*)
- ;;
- --
- 2.5.0
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