X-Git-Url: http://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=aclocal.m4;h=4546836660c1bee9dcaf43b96d7aed88ece48cf3;hp=806dec1c92ec52213e5e298d9f5361d8a313adbc;hb=3e0f770501852be3a2cb05d8044219d7b04dbfad;hpb=76a479337308b4b5e749fa8c38b7b7f482998c5b

diff --git a/aclocal.m4 b/aclocal.m4
index 806dec1c..45468366 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -28,7 +28,7 @@ dnl***************************************************************************
 dnl
 dnl Author: Thomas E. Dickey 1995-on
 dnl
-dnl $Id: aclocal.m4,v 1.790 2016/05/29 00:35:34 tom Exp $
+dnl $Id: aclocal.m4,v 1.791 2016/06/25 20:25:03 tom Exp $
 dnl Macros used in NCURSES auto-configuration script.
 dnl
 dnl These macros are maintained separately from NCURSES.  The copyright on
@@ -711,12 +711,15 @@ AC_SUBST(BUILD_EXEEXT)
 AC_SUBST(BUILD_OBJEXT)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CC_ENV_FLAGS version: 3 updated: 2016/05/21 18:10:17
+dnl CF_CC_ENV_FLAGS version: 4 updated: 2016/06/25 16:23:40
 dnl ---------------
 dnl Check for user's environment-breakage by stuffing CFLAGS/CPPFLAGS content
 dnl into CC.  This will not help with broken scripts that wrap the compiler with
 dnl options, but eliminates a more common category of user confusion.
 dnl
+dnl In particular, it addresses the problem of being able to run the C
+dnl preprocessor in a consistent manner.
+dnl
 dnl Caveat: this also disallows blanks in the pathname for the compiler, but
 dnl the nuisance of having inconsistent settings for compiler and preprocessor
 dnl outweighs that limitation.
@@ -732,7 +735,7 @@ case "$CC" in
 	AC_MSG_WARN(your environment misuses the CC variable to hold CFLAGS/CPPFLAGS options)
 	# humor him...
 	cf_flags=`echo "$CC" | sed -e 's/^[[^ 	]]*[[ 	]][[ 	]]*//'`
-	CC=`echo "$CC" | sed -e 's/[[ 	]].*//'`
+	CC=`echo "$CC " | sed -e 's/[[ 	]]-[[IUD]][[^ 	]][[^ 	]]*//g' -e 's/[[ 	]]*$//'`
 	CF_ADD_CFLAGS($cf_flags)
 	CF_VERBOSE(resulting CC: '$CC')
 	CF_VERBOSE(resulting CFLAGS: '$CFLAGS')