Avoid nonportable ${x##y} substitutions in program tests.

[dxcommon.git] / m4 / flex.m4

diff --git a/m4/flex.m4 b/m4/flex.m4
index 4e9b56fbb7a17cd61c0b61fd6685045bae8a51c0..1aa3dab3c10f726d89088f6b86a0eca79f22ae24 100644 (file)
--- a/m4/flex.m4
+++ b/m4/flex.m4
@@ -20,8 +20,8 @@ AC_CACHE_CHECK([for flex], [ac_cv_path_FLEX],
 [dx_cv_flex_found=:
 AC_PATH_PROGS_FEATURE_CHECK([FLEX], [flex lex],
 [_DX_FLEX_DO_TEST([$ac_path_FLEX],
-[flex_relcmd=${ac_path_FLEX##*/}
-flex_bypath=`command -v "$flex_relcmd"` #''
+[DX_BASENAME([flex_relcmd], ["$ac_path_FLEX"])
+flex_bypath=`{ command -v "$flex_relcmd"; } 2>/dev/null` #''
 ac_cv_path_FLEX=$ac_path_FLEX
 test x"$flex_bypath" = x"$ac_path_FLEX" && ac_cv_path_FLEX=$flex_relcmd
 ac_path_FLEX_found=: