exp10 and exp10f need _GNU_SOURCE. check_mathfunc only tests if the
function is available, and not whether it is locked or unlocked via
_GNU_SOURCE.
This adds some support to configure to test for _GNU_SOURCE and
accordingly report the existence of exp10, exp10f.
Signed-off-by: Ganesh Ajjanagadde <gajjanaga...@gmail.com>
---
configure | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/configure b/configure
index 67baa5d..3797c4b 100755
--- a/configure
+++ b/configure
@@ -1134,6 +1134,17 @@ check_class_headers_cpp(){
} | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
}
+check_feature_test_macro(){
+ log check_feature_test_macro "$@"
+ macro=$1
+ shift 1
+ check_cc "$@" <<EOF
+#if !defined($macro)
+#error "feature test macro not enabled: $macro"
+#endif
+EOF
+}
+
check_cpp_condition(){
log check_cpp_condition "$@"
header=$1
@@ -6026,6 +6037,8 @@ done
enabled zlib && add_cppflags -DZLIB_CONST
+check_feature_test_macro "_GNU_SOURCE" || disable "exp10 exp10f"
+
# conditional library dependencies, in linking order
enabled amovie_filter && prepend avfilter_deps "avformat avcodec"
enabled aresample_filter && prepend avfilter_deps "swresample"
--
2.6.4
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