[PATCH] configure.in.in

[Helge Deller]

On some debian architectures -fPIC compiled libraries are needed, if
you try to generate shared libraries (what most applications in KDE basically are). 

Since Debian for various reasons don't yet provide -fPIC compiled shared libraries on all architectures 
for e.g. XFree86's libXss (xscreensaver) and libfontenc libraries, compilation e.g. on the hppa
architecture fails during link stage of kdesktop with the following error message:
/usr/bin/ld: /usr/X11R6/lib/libXss.a(XScrnSaver.o): relocation R_PARISC_DPREL21L can not be used when making a shared object; recompile with -fPIC
/usr/X11R6/lib/libXss.a: could not read symbols: Bad value
collect2: ld returned 1 exit status
make[3]: *** [libkdeinit_kdesktop.la] Error 1

Similiar errors appears when linking kfontinst(libfontenc) or kopete(libXss).

The attached patch fixes this problem by checking at configure time if gcc is able to 
generate shared libraries instead of static binaries when linking with libXss or libfontenc.

Tested sucessfully on SuSE/i386 & Debian/hppa. 
Ok to commit ?

Helge

BTW: I may provide one single KDE_CHECK_XSCREENSAVER check patch for 
kde-common if people wish (libXss is checked for by kopete and kdesktop).
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Index: kdebase/kdesktop/configure.in.in
===================================================================
RCS file: /home/kde/kdebase/kdesktop/configure.in.in,v
retrieving revision 1.2
diff -u -p -r1.2 configure.in.in
--- kdebase/kdesktop/configure.in.in	15 Oct 2003 16:34:25 -0000	1.2
+++ kdebase/kdesktop/configure.in.in	10 Jan 2004 11:44:46 -0000
@@ -11,13 +11,15 @@ KDE_CHECK_HEADER(X11/extensions/scrnsave
 	LIB_XSS="-lXext"
         ],
         [
+        ld_shared_flag=
+        KDE_CHECK_COMPILER_FLAG(shared, [ld_shared_flag="-shared"])
         AC_CHECK_LIB(Xss,XScreenSaverQueryInfo,
             [
             AC_DEFINE(HAVE_XSCREENSAVER, 1, [Define if you have the XScreenSaver extension])
             LIB_XSS="-lXss"
             ],
             [],
-            [ $X_PRE_LIBS -lXext -lX11 $X_EXTRA_LIBS ])
+            [ $ld_shared_flag $X_PRE_LIBS -lXext -lX11 $X_EXTRA_LIBS ])
         ],
         [ $X_PRE_LIBS -lX11 $X_EXTRA_LIBS ])
      ], [],
Index: kdebase/kcontrol/kfontinst/configure.in.in
===================================================================
RCS file: /home/kde/kdebase/kcontrol/kfontinst/configure.in.in,v
retrieving revision 1.20
diff -u -p -r1.20 configure.in.in
--- kdebase/kcontrol/kfontinst/configure.in.in	20 Nov 2003 14:19:17 -0000	1.20
+++ kdebase/kcontrol/kfontinst/configure.in.in	10 Jan 2004 11:44:46 -0000
@@ -79,7 +79,9 @@ if test $FOUND_FREETYPE -eq 1; then
     AC_MSG_WARN(FontEnc headers not found. FontEnc support disabled)
   else
     ac_LDFLAGS_save="$LDFLAGS"
-    LDFLAGS="$LDFLAGS $all_libraries -lz"
+    ld_shared_flag=
+    KDE_CHECK_COMPILER_FLAG(shared, [ld_shared_flag="-shared"])
+    LDFLAGS="$LDFLAGS $ld_shared_flag $all_libraries -lz"
     AC_CHECK_LIB(fontenc,FontEncDirectory,ac_font_enc_lib=1,ac_font_enc_lib=0)
     if test "$ac_font_enc_lib" = "1"; then
       LIB_FONT_ENC="-lfontenc"
Index: kdenetwork/kopete/libkopete/configure.in.in
===================================================================
RCS file: /home/kde/kdenetwork/kopete/libkopete/configure.in.in,v
retrieving revision 1.4
diff -u -p -r1.4 configure.in.in
--- kdenetwork/kopete/libkopete/configure.in.in	15 Oct 2003 16:39:45 -0000	1.4
+++ kdenetwork/kopete/libkopete/configure.in.in	10 Jan 2004 11:44:46 -0000
@@ -12,13 +12,15 @@ KDE_CHECK_HEADER(X11/extensions/scrnsave
 	LIB_XSS="-lXext"
         ],
         [
+        ld_shared_flag=
+        KDE_CHECK_COMPILER_FLAG(shared, [ld_shared_flag="-shared"])
         AC_CHECK_LIB(Xss,XScreenSaverQueryInfo,
             [
             AC_DEFINE(HAVE_XSCREENSAVER, 1, [Define if you have the XScreenSaver extension])
             LIB_XSS="-lXss"
             ],
             [],
-            [ $X_PRE_LIBS -lXext -lX11 $X_EXTRA_LIBS ])
+            [ $ld_shared_flag $X_PRE_LIBS -lXext -lX11 $X_EXTRA_LIBS ])
         ],
         [ $X_PRE_LIBS -lX11 $X_EXTRA_LIBS ])
      ], [],