build BUGFIX add missing math library to link with

Relates to #17
CESNET · Feb 8, 2016 · cdccf5c · cdccf5c
1 parent 10b7a69
commit cdccf5c
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diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -82,6 +82,9 @@ set(headers
 add_library(yang SHARED ${libsrc})
 set_target_properties(yang PROPERTIES VERSION ${LIBYANG_VERSION} SOVERSION ${LIBYANG_SOVERSION})
 
+# link math
+target_link_libraries(yang m)
+
 # find pthreads
 set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
 find_package(Threads REQUIRED)

diff --git a/src/xpath.c b/src/xpath.c
@@ -21,6 +21,9 @@
 
 #define _GNU_SOURCE
 
+/* needed by libmath functions isfinite(), isinf(), isnan(), signbit(), ... */
+#define _ISOC99_SOURCE
+
 #include <ctype.h>
 #include <stdio.h>
 #include <stdlib.h>