meson: use same compilers to build fuzzers

test/fuzz/meson.build

@@ -7,7 +7,9 @@ sanitize_address = custom_target(
                    meson.source_root(),
                    '@OUTPUT@',
                    'fuzzers',
-                   '-Db_lundef=false -Db_sanitize=address'])
+                   '-Db_lundef=false -Db_sanitize=address',
+                   ' '.join(cc.cmd_array()),
+                   ' '.join(meson.get_compiler('cpp').cmd_array())])
 
 sanitizers = [['address', sanitize_address]]
 

tools/meson-build.sh

@@ -5,8 +5,10 @@ src="$1"
 dst="$2"
 target="$3"
 options="$4"
+CC="$5"
+CXX="$6"
 
-[ -f "$dst/ninja.build" ] || meson "$src" "$dst" $options
+[ -f "$dst/ninja.build" ] || CC="$CC" CXX="$CXX" meson "$src" "$dst" $options
 
 # Locate ninja binary, on CentOS 7 it is called ninja-build, so
 # use that name if available.