kc3-lang/kc3

diff --git a/config.subr b/config.subr
index f01736f..d1db345 100644
--- a/config.subr
+++ b/config.subr
@@ -235,6 +235,11 @@ config_lib() {
                 "$OUT_C" ${LDFLAGS} ${LIBS} $@ -o "$OUT" \
                 >/dev/null 2>&1; then
         LIBS="$LIBS $@"
+        eval "HAVE_$NAME=true"
+        echo "HAVE_$NAME = true" >> ${CONFIG_MK}
+    else
+        eval "HAVE_$NAME=false"
+        echo "HAVE_$NAME = false" >> ${CONFIG_MK}
     fi
     rm -f "$OUT" "$OUT_C"
 }
diff --git a/libc3_window/sdl2/demo/configure b/libc3_window/sdl2/demo/configure
index a9cd9bc..04fd7c3 100755
--- a/libc3_window/sdl2/demo/configure
+++ b/libc3_window/sdl2/demo/configure
@@ -44,10 +44,10 @@ OBJECTS_DEBUG="$(c2ext .debug.lo "$SOURCES")"
 echo "OBJECTS_DEBUG = $OBJECTS_DEBUG" >> ${CONFIG_MK}
 
 # Common config for all targets
-CPPFLAGS="-fopenmp -I../../.. $CPPFLAGS"
+CPPFLAGS="-I../../.. $CPPFLAGS"
 #CPPFLAGS="$CPPFLAGS -DGL_SILENCE_DEPRECATION=1"
 CFLAGS="$CFLAGS -W -Wall -Werror -std=c11 -pedantic -pipe"
-LIBS="$LIBS -lm -fopenmp"
+LIBS="$LIBS -lm"
 config_asan
 config_gnu
 pkg_config libbsd-overlay
@@ -61,6 +61,8 @@ pkg_config libffi
 pkg_config libpng
 config_lib OPENGL -framework OpenGL
 config_lib OPENGL -lopengl32 -lglu32
+config_lib OPENMP -fopenmp
+config_define HAVE_OPENMP "${HAVE_OPENMP}"
 pkg_config sdl2
 
 # Asan config