Using gpc port

[Mikhail T.]

Hi!

Below is a patch to build OOo with the already installed gpc.

It patches "configure.in" and thus may be suitable for submitting to
OOo.

The current OOo ports do not (re-)run automake, so you'll have to patch
the configure instead.

A short-cut may be to simply patch poly2.cxx to always include gpc.h

Yours,

	-mi

--- tools/source/generic/poly2.cxx	Fri Sep  9 10:22:13 2005
+++ tools/source/generic/poly2.cxx	Tue Oct 25 18:12:40 2005
@@ -39,5 +39,9 @@
 {
 #if defined (HAVE_GPC_H) && !defined (__gpc_h)
+# if !defined(SYSTEM_GPC)
 #  include <external/gpc/gpc.h> 
+# else
+#  include <gpc.h> 
+# endif
 #else
 #  ifdef HAVE_LIBART_H
--- tools/source/generic/makefile.mk	Fri Sep  9 10:21:42 2005
+++ tools/source/generic/makefile.mk	Tue Oct 25 18:34:47 2005
@@ -48,4 +48,7 @@
 .IF "$(WITH_GPC)"!="NO"
 CDEFS+=-DHAVE_GPC_H
+.IF "$(SYSTEM_GPC)"=="YES"
+CDEFS+=-DSYSTEM_GPC
+.ENDIF
 .ENDIF
 .IF "$(WITH_LIBART)"!="NO"
--- config_office/configure.in	Wed Oct  5 06:19:55 2005
+++ config_office/configure.in	Tue Oct 25 17:08:32 2005
@@ -3741,28 +3741,18 @@
 elif test "$with_gpc" != "no" && test "$without_gpc" != "yes"; then
   WITH_GPC=YES
+  SYSTEM_GPC=YES
   AC_MSG_RESULT([GPC])
 
-  AC_MSG_CHECKING([for GPC files])
-  if test -f ../external/gpc/gpc.h; then
-	HAVE_GPC_H="yes"
-  else
-	HAVE_GPC_H="no"
-  fi
-  if test -f ../external/gpc/gpc.c; then
-	HAVE_GPC_C="yes"
-  else
-	HAVE_GPC_C="no"
-  fi
-
-  if test "$HAVE_GPC_H" = "yes" -a "$HAVE_GPC_C" = "yes"; then
-	AC_MSG_RESULT([GPC files found])
-  else
-	AC_MSG_ERROR([GPC files not found
-ftp://ftp.cs.man.ac.uk/pub/toby/gpc/gpc231.tar.Z and untar in external/gpc,
-or install libart and use --enable-libart])
-  fi
+  AC_CHECK_HEADER(gpc.h, [],
+    [ AC_MSG_ERROR(gpc.h headers not found.)], [])
+  AC_CHECK_LIB(gpc, gpc_read_polygon, [],
+    [ AC_MSG_ERROR(gpc library not found.)], [])
+  HAVE_GPC_H="yes"
+  AC_MSG_RESULT([GPC files found])
 else
+  SYSTEM_GPC=NO
   AC_MSG_RESULT([internal])
 fi
+AC_SUBST(SYSTEM_GPC)
 AC_SUBST(WITH_LIBART)
 AC_SUBST(LIBART_CFLAGS)
--- config_office/set_soenv.in	Tue Oct 25 17:59:01 2005
+++ config_office/set_soenv.in	Tue Oct 25 18:29:42 2005
@@ -1702,4 +1734,5 @@
 ToFile( "VC_STANDARD",       "@VC_STANDARD@",      "e" );
 ToFile( "WITH_GPC",          "@WITH_GPC@",         "e" );
+ToFile( "SYSTEM_GPC",        "@SYSTEM_GPC@",       "e" );
 ToFile( "WITH_LIBART",       "@WITH_LIBART@",      "e" );
 ToFile( "LIBART_CFLAGS",     "@LIBART_CFLAGS@",    "e" );
--- external/gpc/makefile.mk	Tue Sep  6 10:21:34 2005
+++ external/gpc/makefile.mk	Tue Oct 25 18:31:32 2005
@@ -47,5 +47,5 @@
 # --- Files --------------------------------------------------------
 
-.IF "$(WITH_GPC)"!="NO"
+.IF "$(WITH_GPC)"!="NO" && "$(SYSTEM_GPC)"!="YES"
 SLOFILES = $(SLO)$/gpc.obj