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preferring -qlanglvl=extc89 to -qlanglvl=ansi with IBM's compiler
From: |
Paul Eggert |
Subject: |
preferring -qlanglvl=extc89 to -qlanglvl=ansi with IBM's compiler |
Date: |
Thu, 02 Dec 2004 12:15:33 -0800 |
User-agent: |
Gnus/5.1006 (Gnus v5.10.6) Emacs/21.3 (gnu/linux) |
To follow up to the current discussion in address@hidden, I installed
this patch:
2004-12-02 Paul Eggert <address@hidden>
* lib/autoconf/c.m4 (_AC_PROG_CC_STDC): Prefer -qlanglvl=extc89
to -qlanglvl=ansi. We don't want to disable extensions.
--- c.m4 20 Aug 2004 07:01:02 -0000 1.190
+++ c.m4 2 Dec 2004 20:09:03 -0000 1.191
@@ -864,12 +864,14 @@ char **argv;]],
[[return f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1];]])])
# Don't try gcc -ansi; that turns off useful extensions and
# breaks some systems' header files.
-# AIX -qlanglvl=ansi
+# AIX circa 2003 -qlanglvl=extc89
+# old AIX -qlanglvl=ansi
# Ultrix, OSF/1, Tru64 -std
# HP-UX 10.20 and later -Ae
# HP-UX older versions -Aa -D_HPUX_SOURCE
# SVR4 -Xc -D__EXTENSIONS__
-for ac_arg in "" -qlanglvl=ansi -std -Ae "-Aa -D_HPUX_SOURCE" "-Xc
-D__EXTENSIONS__"
+for ac_arg in "" -qlanglvl=extc89 -qlanglvl=ansi -std \
+ -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
do
CC="$ac_save_CC $ac_arg"
_AC_COMPILE_IFELSE([],
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