From 07367f14d28f86f6395b6ea46a0015405e799a46 Mon Sep 17 00:00:00 2001 From: Sara Golemon Date: Tue, 10 Feb 2015 18:00:05 -0800 Subject: [PATCH] Autodetect pthread_atfork() support Summary: This is usually available on linux Test Plan: Existing tests and manual test on arclinux Reviewed By: mpawlowski@fb.com Subscribers: folly-diffs@, yfeldblum FB internal diff: D1840081 Signature: t1:1840081:1423619986:911c95f9f04f286e9f113543ab4b705cf1b17396 --- folly/configure.ac | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/folly/configure.ac b/folly/configure.ac index 023a9fb6..8b3eb1ac 100644 --- a/folly/configure.ac +++ b/folly/configure.ac @@ -264,6 +264,23 @@ AC_SEARCH_LIBS([clock_gettime], [rt], [Define to 1 if we support clock_gettime(2).]), []) +# Check for pthread_atfork(3). This is not in an AC_CHECK_FUNCS() because we +# want to include pthread.h if necessary. +AC_CACHE_CHECK( + [for pthread_atfork support], + [folly_cv_prog_cc_pthread_atfork], + [AC_COMPILE_IFELSE( + [AC_LANG_SOURCE[ + #include + void func() {pthread_atfork(NULL, NULL, NULL);}] + ], + [folly_cv_prog_cc_pthread_atfork=yes], + [folly_cv_prog_cc_pthread_atfork=no])]) + +if test "$folly_cv_prog_cc_pthread_atfork" = "yes"; then + AC_DEFINE([HAVE_PTHREAD_ATFORK], [1], [Define to 1 if the compiler supports pthread_atfork]) +fi + # Checks for library functions. AC_CHECK_FUNCS([getdelim \ gettimeofday \ @@ -272,7 +289,6 @@ AC_CHECK_FUNCS([getdelim \ pow \ strerror \ pthread_yield \ - pthread_atfork \ malloc_size \ malloc_usable_size \ memrchr \ -- 2.34.1