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invalid sed usage wrt. POSIX
From: |
Jens Elkner |
Subject: |
invalid sed usage wrt. POSIX |
Date: |
Thu, 29 May 2003 03:16:00 +0200 (MEST) |
Hi,
I just encountered, that automake uses non-POSIX conform sed syntax wrt.
to the expected results in lispdir.m4 . For example, it uses something like:
echo '/usr/share/emacs/' | \
sed -e '/.*\/share\/\(x\?emacs\)/ {s,,foobar/\1,;p;q;}'
expected result is: foobar/emacs/
However, if one has set the env var POSIXLY_CORRECT, GNU sed > 3.02.0
produces: foobar//usr/share/emacs/
Implications: configure scripts produces garbage.
One example: configure for autoconf 2.57 (cause lispdir.m4)
with POSIXLY_CORRECT set:
checking where .elc files should go...
${datadir}//usr/local/share/emacs/site-lisp
with POSIXLY_CORRECT not set:
checking where .elc files should go... ${datadir}/emacs/site-lisp
So I suggest the following patch:
--- automake-1.7.2/m4/lispdir.m4.orig Fri Jul 19 22:17:58 2002
+++ automake-1.7.2/m4/lispdir.m4 Thu May 29 03:08:58 2003
@@ -48,8 +48,8 @@
AC_RUN_LOG([$EMACS -batch -q -eval '(while load-path (princ (concat (car
load-path) "\n")) (setq load-path (cdr load-path)))' </dev/null >conftest.out])
am_cv_lispdir=`sed -n \
-e 's,/$,,' \
- -e '/.*\/lib\/\(x\?emacs\/site-lisp\)$/{s,,${libdir}/\1,;p;q;}' \
- -e '/.*\/share\/\(x\?emacs\/site-lisp\)$/{s,,${datadir}/\1,;p;q;}' \
+ -e
'/.*\/lib\/x\?emacs\/site-lisp$/{s,.*\/lib\/\(x\?emacs\/site-lisp\),${libdir}/\1,;p;q;}'
\
+ -e
'/.*\/share\/x\?emacs\/site-lisp$/{s,.*\/share\/\(x\?emacs\/site-lisp\),${datadir}/\1,;p;q;}'
\
conftest.out`
rm conftest.out
if test -z "$am_cv_lispdir"; then
Regards,
jens.
--
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