libmusicbrainz: Set CMAKE_EXE_LINKER_FLAGS to build linker flags

Some older compilers do not support security flags like -fstack-protector=strong
and if we do not set this then it will use the target flags to pass here
which will fail with gcc < 5.x, especially a problem building distros with
security flags on host with 4.x gcc e.g. ubuntu 14.04

Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-multimedia/recipes-multimedia/musicbrainz/libmusicbrainz_git.bb

@@ -22,10 +22,12 @@ do_configure_prepend() {
     git clean -dfx -e /.pc/ -e /patches/ .
     mkdir build-native
     cd build-native
-    cmake -DCMAKE_C_FLAGS=${BUILD_CFLAGS} \
+    LDFLAGS="${BUILD_LDFLAGS}" \
+          cmake -DCMAKE_C_FLAGS=${BUILD_CFLAGS} \
           -DCMAKE_C_COMPILER=${BUILD_CC} \
           -DCMAKE_CXX_FLAGS=${BUILD_CXXFLAGS} \
           -DCMAKE_CXX_COMPILER=${BUILD_CXX} \
+          -DCMAKE_EXE_LINKER_FLAGS=${BUILD_LDFLAGS} \
           ..
     make make-c-interface
     cd ..