Functions should always return a value

[flightgear.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 8c467ec6c12cee7cb5caa612abe585d3c7aa673a..3ea1d4f501d180400e3c1639993fb46afa048cee 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -199,6 +199,7 @@ dnl check for some default libraries
 AC_SEARCH_LIBS(sqrt, [am ffm fm fastm m])
 AC_SEARCH_LIBS(ceil, m)
 AC_SEARCH_LIBS(dlclose, dl)
+AC_SEARCH_LIBS(clock_gettime, rt)
 
 base_LIBS="$LIBS"
 
@@ -606,7 +607,7 @@ dnl Check for Subversion library support
 save_LIBS=$LIBS
 save_CPPFLAGS=$CPPFLAGS
 LIBS=""
-CPPFLAGS="-I/usr/include/subversion-1 -I/usr/include/apr-1.0"
+CPPFLAGS="-I/usr/include/subversion-1 `apr-1-config --includes`"
 AC_CHECK_LIB(svn_client-1, svn_client_checkout3)
 AC_CHECK_HEADERS([svn_client.h])
 if test "x$ac_cv_header_svn_client_h" != "xyes"; then
@@ -624,6 +625,13 @@ fi
 LIBS=$save_LIBS
 CPPFLAGS=$save_CPPFLAGS
 
+AC_MSG_CHECKING([for feenableexcept])
+AC_LINK_IFELSE([AC_LANG_PROGRAM([[#define _GNU_SOURCE
+#include <fenv.h>]], [[feenableexcept(FE_DIVBYZERO)]])],
+[AC_DEFINE([HAVE_FEENABLEEXCEPT], 1, [define if system has fenableexcept])],
+AC_MSG_RESULT([yes]),
+AC_MSG_RESULT([no]))
+
 dnl Checks for header files.
 AC_HEADER_STDC
 AC_CHECK_HEADERS( \