diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 2713cbc2..6fc44c3e 100644 --- a/configure.ac +++ b/configure.ac @@ -1350,6 +1350,23 @@ if test "x${je_cv_mach_absolute_time}" = "xyes" ; then AC_DEFINE([JEMALLOC_HAVE_MACH_ABSOLUTE_TIME]) fi +dnl Check if syscall(2) is usable. Treat warnings as errors, so that e.g. OS X +dnl 10.12's deprecation warning prevents use. +SAVED_CFLAGS="${CFLAGS}" +JE_CFLAGS_APPEND([-Werror]) +JE_COMPILABLE([syscall(2)], [ +#define _GNU_SOURCE +#include <sys/syscall.h> +#include <unistd.h> +], [ + syscall(SYS_write, 2, "hello", 5); +], + [je_cv_syscall]) +CFLAGS="${SAVED_CFLAGS}" +if test "x$je_cv_syscall" = "xyes" ; then + AC_DEFINE([JEMALLOC_HAVE_SYSCALL], [ ]) +fi + dnl Check if the GNU-specific secure_getenv function exists. AC_CHECK_FUNC([secure_getenv], [have_secure_getenv="1"], |