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Re: non-portable construct in gcc configure script
- From: Eric Botcazou <ebotcazou at libertysurf dot fr>
- To: Joe Buck <jbuck at synopsys dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Sat, 24 May 2003 22:21:24 +0200
- Subject: Re: non-portable construct in gcc configure script
- References: <20030515180723.A1418@synopsys.com>
> In the test labeled
>
> AC_MSG_CHECKING(linker read-only and read-write section mixing)
>
> gcc/configure.in in 3.3 uses "grep -A1". This feature is not in Solaris's
> grep. It's not in the HP-UX grep either.
>
> The result is that the configure output looks like
>
>
> checking linker read-only and read-write section mixing... grep: illegal
> option -- A grep: illegal option -- 1
> Usage: grep -hblcnsviw pattern file . . .
>
> on Solaris 2.8. The failure appears harmless, but I'm not sure.
Does the attached patch cure it? The construct works on the 5 Solaris
versions I have access to, but I can't directly test the configure check
because it dies earlier with the native Sun tools.
--
Eric Botcazou
Index: configure.in
===================================================================
RCS file: /cvs/gcc/gcc/gcc/configure.in,v
retrieving revision 1.627.2.8
diff -u -r1.627.2.8 configure.in
--- configure.in 12 May 2003 18:49:18 -0000 1.627.2.8
+++ configure.in 24 May 2003 20:04:38 -0000
@@ -2319,7 +2319,10 @@
&& $gcc_cv_ld -shared -o conftest1.so conftest1.o \
conftest2.o conftest3.o; then
gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
- | grep -A1 myfoosect`
+ | sed -n '/.*myfoosect.*/{
+ N
+ p
+ }'`
if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
gcc_cv_ld_ro_rw_mix=read-only