build: pass the linker argument via muon argument

Use the canonical way to set the static build using the command line
argument.

Signed-off-by: Daniel Wagner <[email protected]>

Author: dwsuse

scripts/build.sh

@@ -172,9 +172,9 @@ tools_build_muon() {
 }
 
 config_muon_default() {
-    CC="${CC}" CFLAGS="${CFLAGS} -static"               \
-        ninja="${SAMU}" "${MUON}" setup                 \
+    CC="${CC}" ninja="${SAMU}" "${MUON}" setup          \
         -Ddefault_library=static                        \
+        -Dc_link_args="-static"                         \
         -Djson-c=disabled                               \
         -Dopenssl=disabled                              \
         -Dkeyutils=disabled                             \