Minor autoconf style cleanup.

diff --git a/configure.ac b/configure.ac
index 19f89ed43ef01393efce807ca2e654dcbf4e8ce7..49ef16c5c59cfd6941c15a70824fcd3b6f402f6e 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -94,14 +94,13 @@ dnl We want these before the checks,
 dnl so the checks can modify their values.
 test -z "$CFLAGS" && CFLAGS= auto_cflags=1
 
-AC_PROG_CC(cc gcc)
+AC_PROG_CC([cc gcc])
 AM_PROG_CC_C_O
 
 dnl Use -v and some other options with SunStudio cc.
-case `${CC} -V 2>&1` in
-  cc:\ Sun\ C*) CFLAGS="${CFLAGS:+$CFLAGS }-v -errtags=yes"
-                CFLAGS="${CFLAGS} -erroff=E_STATEMENT_NOT_REACHED" ;;
-esac
+AS_CASE([`${CC} -V 2>&1`],
+       [cc:\ Sun\ C*], [CFLAGS="${CFLAGS:+$CFLAGS }-v -errtags=yes"
+                        CFLAGS="${CFLAGS} -erroff=E_STATEMENT_NOT_REACHED"])
 
 AC_CACHE_CHECK([whether compiler supports -Wextra], [nmh_cv_has_wextra],
 [nmh_saved_cflags="$CFLAGS"