Feature test C11 generics, since GCC lies about compliance

2017-12-20 18:55:50 +01:00
parent 16a359f944
commit c635f46439
4 changed files with 20 additions and 1 deletions
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -62,6 +62,14 @@ else()
 	set(BACKTRACE_L_FLAGS "")
 endif()

+check_c_source_compiles(
+    "#define print(x) _Generic((x), default : print_unknown)(x) \n void print_unknown(){} \n int main () { print(0); }"
+    HAS_GENERIC)
+
+if(HAS_GENERIC)
+    add_definitions(-DHAS_GENERIC)
+endif(HAS_GENERIC)
+
 if( ENABLE_RSVG )
 pkg_check_modules( RSVG librsvg-2.0>=2.14.0 )
 endif( ENABLE_RSVG )