GDB 5.1.1 porting patches for POSIX 1003.1-2001 hosts

[Paul Eggert]

The new POSIX standard is now official (IEEE Std 1003.1-2001), and it
has removed support for some obsolete utility options that the GDB
build procedure uses in a few places.  Here is a proposed patch,
relative to GDB 5.1.1, to help ensure that GDB still will build on
POSIX 1003.1-2001 hosts.  The patch shouldn't break GDB builds on
older hosts, as it avoids POSIX features that are not available in
pre-POSIX platforms.

I've done this patch by code inspection; I don't actually have a fully
conforming POSIX 1003.1-2001 host yet, though I do have some
experimental commands that insist on the -2001 behavior if you set the
right environment variables.

2002-02-19  Paul Eggert  <address@hidden>

        * Makefile.in (VER): Change "head -1" to "sed q", since POSIX
        1003.1-2001 no longer allows "head -1".
        * gdb/Makefile.in (version.c): Likewise.
        * gdb/doc/Makefile.in (GDBvn.texi): Likewise.

        * gdb/CONTRIBUTE: Change "diff -c3" to "diff -c", which is
        equivalent.  POSIX 1003.1-2001 no longer allows "diff -c3".

===================================================================
RCS file: Makefile.in,v
retrieving revision 5.1.1.0
retrieving revision 5.1.1.1
diff -pu -r5.1.1.0 -r5.1.1.1
--- Makefile.in 2002/01/24 03:52:59     5.1.1.0
+++ Makefile.in 2002/02/20 04:28:34     5.1.1.1
@@ -1762,7 +1762,7 @@ VER = `   if grep 'AM_INIT_AUTOMAKE.*BFD_V
        elif grep AM_INIT_AUTOMAKE $(TOOL)/configure.in >/dev/null 2>&1; then \
          sed < $(TOOL)/configure.in -n 's/AM_INIT_AUTOMAKE[^,]*, 
*\([^)]*\))/\1/p'; \
        elif test -f $(TOOL)/version.in; then \
-         head -1 $(TOOL)/version.in; \
+         sed q $(TOOL)/version.in; \
        elif grep VERSION $(TOOL)/Makefile.in > /dev/null 2>&1; then \
          sed < $(TOOL)/Makefile.in -n 's/^VERSION *= *//p'; \
        else \
===================================================================
RCS file: gdb/Makefile.in,v
retrieving revision 5.1.1.0
retrieving revision 5.1.1.1
diff -pu -r5.1.1.0 -r5.1.1.1
--- gdb/Makefile.in     2001/11/18 05:08:36     5.1.1.0
+++ gdb/Makefile.in     2002/02/20 04:28:34     5.1.1.1
@@ -1024,7 +1024,7 @@ $(srcdir)/copying.c: @MAINTAINER_MODE_TR
 version.c: Makefile version.in
        rm -f version.c-tmp version.c
        echo '#include "version.h"' >> version.c-tmp
-       echo 'const char version[] = "'"`head -1 ${srcdir}/version.in`"'";' >> 
version.c-tmp
+       echo 'const char version[] = "'"`sed q ${srcdir}/version.in`"'";' >> 
version.c-tmp
        echo 'const char host_name[] = "$(host_alias)";' >> version.c-tmp
        echo 'const char target_name[] = "$(target_alias)";' >> version.c-tmp
        mv version.c-tmp version.c
===================================================================
RCS file: gdb/doc/Makefile.in,v
retrieving revision 5.1.1.0
retrieving revision 5.1.1.1
diff -pu -r5.1.1.0 -r5.1.1.1
--- gdb/doc/Makefile.in 2002/01/21 03:54:43     5.1.1.0
+++ gdb/doc/Makefile.in 2002/02/20 04:28:34     5.1.1.1
@@ -215,7 +215,7 @@ refcard.ps : refcard.dvi
 
 # File to record current GDB version number (copied from main dir version.in)
 GDBvn.texi : ${gdbdir}/version.in
-       echo "@set GDBVN `head -1 $(srcdir)/../version.in`" > ./GDBvn.new
+       echo "@set GDBVN `sed q $(srcdir)/../version.in`" > ./GDBvn.new
        mv GDBvn.new GDBvn.texi
 
 # Updated atomically
===================================================================
RCS file: gdb/CONTRIBUTE,v
retrieving revision 5.1.1.0
retrieving revision 5.1.1.1
diff -pu -r5.1.1.0 -r5.1.1.1
--- gdb/CONTRIBUTE      2001/09/26 20:53:27     5.1.1.0
+++ gdb/CONTRIBUTE      2002/02/20 04:28:34     5.1.1.1
@@ -70,7 +70,7 @@ o     Submitting Patches
        documentation (i.e., .texi files).
 
        The patch itself. If you are accessing the CVS repository use
-       "cvs update; cvs diff -c3p"; else, use "diff -c3p OLD NEW" or
+       "cvs update; cvs diff -cp"; else, use "diff -cp OLD NEW" or
        "diff -up OLD NEW". If your version of diff does not support
        these options, then get the latest version of GNU diff.