devtools: skip meson build for missing compilers

If either gcc or clang are missing, skip doing those builds.
This allows a setup to only do, e.g. gcc tests.

Cc: stable@dpdk.org

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Luca Boccassi <bluca@debian.org>
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>

devtools/test-meson-builds.sh

@@ -54,6 +54,7 @@ fi
 
 # shared and static linked builds with gcc and clang
 for c in gcc clang ; do
+	command -v $c >/dev/null 2>&1 || continue
 	for s in static shared ; do
 		export CC="ccache $c"
 		build build-$c-$s --default-library=$s