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[patch] small tweak to top level configure.in
- From: Nathanael Nerode <neroden at doctormoo dot dyndns dot org>
- To: gcc-patches at gcc dot gnu dot org, gdb-patches at sources dot redhat dot com,binutils at sources dot redhat dot com, dj at redhat dot com
- Date: Wed, 3 Jul 2002 16:08:11 -0400
- Subject: [patch] small tweak to top level configure.in
Yes, I know when they shouldn't be used. But I've discovered that they allow
me to work around various issues which come up during autoconfiscation, in a
really straightforward way. So I'd like to introduce these two variables for
my future use.
'pwd' technically conflicts with a variable in 'configure', but that variable
is defined to exactly the same thing (with no 'cd's in between), so...
2002-07-02 Nathanael Nerode <neroden@gcc.gnu.org>
* configure.in: Introduce variables 'pwd', 'abs_srcdir'.
Index: configure.in
===================================================================
RCS file: /cvs/gcc/gcc/configure.in,v
retrieving revision 1.167
diff -u -r1.167 configure.in
--- configure.in 3 Jul 2002 02:49:38 -0000 1.167
+++ configure.in 3 Jul 2002 20:00:40 -0000
@@ -33,6 +33,14 @@
##############################################################################
+# Get some absolute paths, because they're too useful to do without.
+# Don't use these outside this invocation (e.g. not in the Makefile),
+# since they might change between 'configure', 'make', and 'make install'.
+# Absolute path to the build directory (current directory).
+pwd=`${PWDCMD-pwd}`
+# Absolute path to the source directory (srcdir).
+abs_srcdir=`cd ${srcdir}; ${PWDCMD-pwd}`
+
### To add a new directory to the tree, first choose whether it is a target
### or a host dependent tool. Then put it into the appropriate list
### (library or tools, host or target), doing a dependency sort. For