Fix for PR libc/1686

[Mark Kettenis]

Here's the promised patch.

I'll close the PR once this has been installed.

Mark


2000-07-14  Mark Kettenis  <kettenis@gnu.org>

	* configure.in: Check for pwd binary.
	* config.make.in: Add PWD_P to be subsituted.
	* Makerules: Use $(PWD_P) instead of /bin/pwd.


Index: configure.in
===================================================================
RCS file: /cvs/glibc/libc/configure.in,v
retrieving revision 1.281
diff -u -p -r1.281 configure.in
--- configure.in	2000/07/06 23:28:54	1.281
+++ configure.in	2000/07/14 16:23:31
@@ -505,6 +505,16 @@ if test "$INSTALL" = "${srcdir}/scripts/
 fi
 AC_PROG_LN_S
 
+# We need the physical current working directory.  We cannot use the
+# "pwd -P" shell builtin since that's not portable.  Instead we try to
+# find a pwd binary.  Note that assigning to the PWD environment
+# variable might have some interesting side effects, so we don't do
+# that.
+AC_PATH_PROG(PWD_P, pwd, no)
+if test "$PWD_P" = no; then
+  AC_MSG_ERROR(*** A pwd binary could not be found.)
+fi
+
 # These programs are version sensitive.
 AC_REQUIRE([AC_CHECK_TOOL_PREFIX])dnl
 AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v,
Index: Makerules
===================================================================
RCS file: /cvs/glibc/libc/Makerules,v
retrieving revision 1.339
diff -u -p -r1.339 Makerules
--- Makerules	2000/06/21 18:15:14	1.339
+++ Makerules	2000/07/14 16:23:32
@@ -985,7 +985,7 @@ endif
 s = $(sysdep_dir)/generic
 $(objpfx)stubs: $(+depfiles)
 # Use /dev/null since `...` might expand to empty.
-	(s=`cd $s && /bin/pwd`; \
+	(s=`cd $s && $(PWD_P)`; \
 	 $(patsubst %/,cd % &&,$(objpfx)) \
 	 sed -n 's/^stub_warning *(\([^)]*\).*$$/#define __stub_\1/p' \
 	  `sed -n -e '\@ $s/[^ ]*\.c@{; s@^.* $s/\([^ ]*\.c\).*$$@'"$$s"'/\1@; h; }' \
Index: config.make.in
===================================================================
RCS file: /cvs/glibc/libc/config.make.in,v
retrieving revision 1.68
diff -u -p -r1.68 config.make.in
--- config.make.in	2000/05/23 19:22:55	1.68
+++ config.make.in	2000/07/14 16:23:32
@@ -75,6 +75,7 @@ RANLIB = @RANLIB@
 MAKEINFO = @MAKEINFO@
 AS = $(CC) -c
 MIG = @MIG@
+PWD_P = @PWD_P@
 
 # Installation tools.
 INSTALL = @INSTALL@