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authorJoerg Sonnenberger <joerg@bec.de>2013-03-25 13:13:33 +0000
committerJoerg Sonnenberger <joerg@bec.de>2013-03-25 13:13:33 +0000
commitf9a7132df8f8e0dd0f54fd603d358fc5a2285011 (patch)
tree7ca7902dd019b343ea5fe1c7aea9a140fb85b610 /autoconf
parent1bb93a912199bda15214d1ee7f3c731b8e9b648d (diff)
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Refine fenv.h handling: check if the desired macros exist, before using
it. NetBSD/ARM and TILE-Gx are examples for platforms that have an unusable fenv.h and this avoids the need for a blacklist. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177865 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'autoconf')
-rw-r--r--autoconf/configure.ac1
1 files changed, 1 insertions, 0 deletions
diff --git a/autoconf/configure.ac b/autoconf/configure.ac
index 9d61c24..0097db3 100644
--- a/autoconf/configure.ac
+++ b/autoconf/configure.ac
@@ -1493,6 +1493,7 @@ AC_CHECK_HEADERS([sys/mman.h sys/param.h sys/resource.h sys/time.h sys/uio.h])
AC_CHECK_HEADERS([sys/types.h sys/ioctl.h malloc/malloc.h mach/mach.h])
AC_CHECK_HEADERS([valgrind/valgrind.h])
AC_CHECK_HEADERS([fenv.h])
+AC_CHECK_DECLS([FE_ALL_EXCEPT, FE_INEXACT], [], [], [[#include <fenv.h>]])
if test "$LLVM_ENABLE_THREADS" -eq 1 && test "$ENABLE_PTHREADS" -eq 1 ; then
AC_CHECK_HEADERS(pthread.h,
AC_SUBST(HAVE_PTHREAD, 1),