Re: [hpux] Fix build problem on hpux

[Randolph Chung <randolph@tausq.org>]

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> This can't be right.  The point is to add -D_XOPEN_SOURCE_EXTENDED
> whenever we compile *on* HP-UX, not whenever we're targeting HP-UX.
> This should be handled using autoconf, much in the same way as we do
> for _GNU_SOURCE, since it affects the functionality made available by
> the OS.

How about this instead?

randolph

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2005-03-09  Randolph Chung  <tausq@debian.org>

	* hpread.c (hpread_start_psymtab): Remove hpread_psymtab_to_symtab
	declaration.
	* acinclude.m4 (gdb_AC_HPUX): Define.
	* config.in (_XOPEN_SOURCE_EXTENDED): Define if needed.
	* configure.ac: Call gdb_AC_HPUX.
	* configure: Regenerate.

Index: hpread.c
===================================================================
RCS file: /cvs/src/src/gdb/hpread.c,v
retrieving revision 1.58
diff -u -p -r1.58 hpread.c
--- hpread.c	17 Dec 2005 22:34:01 -0000	1.58
+++ hpread.c	9 Mar 2006 15:28:16 -0000
@@ -2385,7 +2386,6 @@ hpread_start_psymtab (struct objfile *ob
 		      struct partial_symbol **static_syms)
 {
   int offset = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
-  extern void hpread_psymtab_to_symtab ();
   struct partial_symtab *result =
   start_psymtab_common (objfile, objfile->section_offsets,
 			filename, textlow, global_syms, static_syms);
Index: acinclude.m4
===================================================================
RCS file: /cvs/src/src/gdb/acinclude.m4,v
retrieving revision 1.13
diff -u -p -r1.13 acinclude.m4
--- acinclude.m4	17 Dec 2005 22:33:59 -0000	1.13
+++ acinclude.m4	10 Mar 2006 00:16:44 -0000
@@ -987,3 +987,14 @@ if test x = y ; then
 fi
 ])
 
+AC_DEFUN(gdb_AC_HPUX,
+[AC_BEFORE([$0], [AC_TRY_COMPILE])dnl
+AC_BEFORE([$0], [AC_TRY_RUN])dnl
+AC_MSG_CHECKING(for HPUX)
+AC_EGREP_CPP(yes,
+[#ifdef _HPUX_SOURCE
+  yes
+#endif
+], [AC_MSG_RESULT(yes); AC_DEFINE(_XOPEN_SOURCE_EXTENDED)], AC_MSG_RESULT(no))
+])
+
Index: config.in
===================================================================
RCS file: /cvs/src/src/gdb/config.in,v
retrieving revision 1.82
diff -u -p -r1.82 config.in
--- config.in	3 Jul 2005 16:05:11 -0000	1.82
+++ config.in	10 Mar 2006 00:16:44 -0000
@@ -607,6 +607,13 @@
 # undef _ALL_SOURCE
 #endif
 
+/* Define to 1 if on HPUX.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _XOPEN_SOURCE_EXTENDED
+# undef _XOPEN_SOURCE_EXTENDED
+#endif
+
 /* Enable GNU extensions on systems that have them.  */
 #ifndef _GNU_SOURCE
 # undef _GNU_SOURCE
Index: configure.ac
===================================================================
RCS file: /cvs/src/src/gdb/configure.ac,v
retrieving revision 1.30
diff -u -p -r1.30 configure.ac
--- configure.ac	21 Feb 2006 21:02:25 -0000	1.30
+++ configure.ac	10 Mar 2006 00:18:27 -0000
@@ -30,6 +30,7 @@ AM_MAINTAINER_MODE
 AC_PROG_CC
 AC_GNU_SOURCE
 AC_AIX
+gdb_AC_HPUX
 AC_ISC_POSIX
 AM_PROG_CC_STDC