- switched some compile-time dependencies to target dependencies, such that

cross-compiling with BeOS target works.
- tweaked build-procedure to allow for proper generation of a i586-pc-beos
  cross-compiler on LINUX.
- added documentation for creation of cross-compiler.


git-svn-id: file:///srv/svn/repos/haiku/trunk/buildtools@11255 a95241bf-73f2-0310-859d-f6bbb57e9c96

INSTALL-as-cross-compiler-on-LINUX

@@ -0,0 +1,74 @@
+How to build gcc-2.95.3 for BeOS under Linux (a cross-compiler), which 
+will allow you to compile BeOS projects under Linux, i.e. the apps
+that this compilers produces can only be executed on BeOS (not on Linux).
+
+*** the major work of creating the cross-compiler and describing the
+*** process how to build it has been done by Eric Petit <titer@m0k.org>, 
+*** so if you think this cross-compiler is great, please tell him.
+
+-----------------------------------------------------------------------
+On your Linux-box, open a shell...
+
+0 - Preparations
+----------------
+...and fetch the 'buildtools' module from the haiku CVS. You should then
+have a 'buildtools' folder that contains folders named 'binutils' and
+'gcc' (and this file, too!).
+
+	cd buildtools
+
+Now decide where you want to install the cross-compiler. The install 
+folder will be referred to as $PREFIX. I suggest to install to 
+/opt/cross-tools, but you can basically put it anywhere you like.
+
+	export PREFIX=/opt/cross-tools
+
+and add it the path:
+
+	export PATH=$PATH:$PREFIX/bin
+
+Create two folders for the headers and libraries, say $BEINC and
+$BELIB:
+	
+	mkdir beinc
+	export BEINC=$(pwd)/beinc
+	mkdir belib
+	export BELIB=$(pwd)/belib
+
+Copy all contents from /boot/develop/lib/x86/ on your BeOS install to
+$BELIBS on your Linux box (make sure symbolic links are followed). You
+should have $BELIBS/libbe.so, etc.
+
+Copy all contents from /boot/develop/headers/ on your BeOS install to
+$BEINCS on your Linux box. You should have $BEINCS/be/AppKit.h, etc.
+
+
+1 - Building binutils
+---------------------
+	mkdir binutils-obj
+	cd binutils-obj
+	CFLAGS="-O2" CXXFLAGS="-O2" ../binutils/configure --prefix=$PREFIX \
+	--target=i586-pc-beos --disable-nls --enable-shared=yes
+	make && make install
+	cd ..
+
+2 - Building gcc/g++
+--------------------
+	mkdir -p $PREFIX/lib/gcc-lib/i586-pc-beos/2.95.3-beos-041202
+	mkdir gcc-obj
+	cd gcc-obj
+	CFLAGS="-O2" CXXFLAGS="-O2" ../gcc/configure --prefix=$PREFIX \
+	--target=i586-pc-beos --disable-nls --enable-shared=yes \
+	--enable-languages=c,c++ --with-headers=$BEINC --with-libs=$BELIB
+	make cross && make install
+	cd ..
+
+Ok, now everything is compiled and installed, waiting to be used:
+
+	i586-pc-beos-gcc test.c
+	
+would compile the file test.c with the fresh cross-compiler.
+
+So have fun!
+
+Please send questions & bug-reports to: Oliver Tappe <gcc@hirschkaefer.de>

binutils/bfd/config.bfd

@@ -543,6 +543,7 @@ case "${targ}" in
   i[3-7]86-*-beoself* | i[3-7]86-*-beos*)
     targ_defvec=bfd_elf32_i386_vec
     targ_selvecs="i386pe_vec i386pei_vec"
+    targ_cflags=-DDT_RELCOUNT_IS_UNKNOWN_ON_TARGET
     ;;
   i[3-7]86-*-interix*)
     targ_defvec=i386pei_vec

binutils/bfd/elflink.c

@@ -7814,7 +7814,7 @@ bfd_elf_final_link (bfd *abfd, struct bfd_link_info *info)
 	    default:
 	      continue;
 /* BeOS (R5) doesn't know about DT_RELCOUNT, so we avoid using it */
-#ifndef __BEOS__
+#ifndef DT_RELCOUNT_IS_UNKNOWN_ON_TARGET
 	    case DT_NULL:
 	      if (relativecount > 0 && dyncon + bed->s->sizeof_dyn < dynconend)
 		{

gcc/gcc/config/i386/t-beos

@@ -19,4 +19,4 @@ EXTRA_PARTS += fix_bdirectwin_typeinfo.o
 # function as provided by the Be-libs (which crashes GLTeapot). 
 #
 fix_bdirectwin_typeinfo.o: $(srcdir)/beos-specific/fix_bdirectwin_typeinfo.cpp
-	gcc -c -O0 $(srcdir)/beos-specific/fix_bdirectwin_typeinfo.cpp
+	$(GCC_FOR_TARGET) -c -O0 $(srcdir)/beos-specific/fix_bdirectwin_typeinfo.cpp

gcc/gcc/cp/method.c

@@ -350,7 +350,7 @@ flush_repeats (nrepeats, type)
       return 0;
     }
 
-#ifdef __BEOS__
+#ifdef USE_EGCS_MANGLED_NAMES
   if (TREE_CODE(type) == POINTER_TYPE 
   && TREE_CODE(TREE_TYPE(type)) == ARRAY_TYPE)
     {

gcc/gcc/cross-make

@@ -5,7 +5,9 @@ LIBGCC1 = $(CROSS_LIBGCC1)
 
 # Dir to search for system headers.  Normally /usr/include.
 # Use CROSS_INCLUDE_DIR not TOOL_INCLUDE_DIR for other vendor's headers.
-SYSTEM_HEADER_DIR = $(tooldir)/sys-include
+# SYSTEM_HEADER_DIR = $(tooldir)/sys-include
+# [zooey]: gcc looks for limits.h and float.h which under BeOS live in posix subfolder:
+SYSTEM_HEADER_DIR = $(tooldir)/sys-include/posix
 
 # Don't try to compile the things we can't compile.
 ALL = all.cross

gcc/gcc/fixinc/fixlib.h

@@ -31,14 +31,12 @@ Boston, MA 02111-1307, USA.  */
 #include "tm.h"
 #include <signal.h>
 
-#ifdef __BEOS__
 #include "gnu-regex.h"
 #define xregcomp regcomp
 #define xregexec regexec
 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
 #define TOUPPER(c) toupper((c))
 #define ISIDNUM(c) (isalnum((c))||(c)=='_')
-#endif
 
 #include "machname.h"
 #include "libiberty.h"