X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/7aacb5983a54306930fa9c467ddd81379bfe28e6..912dc7a4eb7ee59f8d146c869c4f9a1ff0c8190f:/configure.ac

diff --git a/configure.ac b/configure.ac
index 6af8c4df..bb42a6ac 100644
--- a/configure.ac
+++ b/configure.ac
@@ -97,9 +97,15 @@ if test x"$enable_debug" = x"yes"; then
   test -z "$LDFLAGS" && LDFLAGS=-g
 fi
 
-AC_PROG_CC([cc clang 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
+
 AC_CACHE_CHECK([whether compiler supports -Wextra], [nmh_cv_has_wextra],
 [nmh_saved_cflags="$CFLAGS"
  CFLAGS="$CFLAGS -Wextra -Werror"
@@ -107,9 +113,9 @@ AC_CACHE_CHECK([whether compiler supports -Wextra], [nmh_cv_has_wextra],
  CFLAGS="$nmh_saved_cflags"])
 
 dnl Can't use -ansi with gcc 4.5.3 on Cygwin, at least through setup
-dnl setup version 2.763, because it disables some features in the
-dnl system system header files and warns about them with -Wall.  Try
-dnl to test for that generally, though still with gcc.
+dnl version 2.763, because it disables some features in the system
+dnl header files and warns about them with -Wall.  Try to test for
+dnl that generally, though still with gcc.
 if test "$GCC" = yes; then
   AC_CACHE_CHECK([whether we can use -ansi with gcc], [nmh_cv_has_dash_ansi],
     [nmh_saved_cppflags="$CPPFLAGS"