Option for specifying custom source path.

Set source path with `---with-<tool>-src` (e.i --with-gcc-src=/path/to/gcc).
Use builtin source by defaul.

Signed-off-by: Luis Silva <[email protected]>

Author: luismgsilva

Makefile.in

@@ -21,12 +21,31 @@ LINUX_BRANCH 		:= arc64
 
 -include build.config
 
+
+BINUTILS_SRCDIR		:= @with_binutils_src@
+ifeq ($(BINUTILS_SRCDIR),)
 BINUTILS_SRCDIR		:= $(srcdir)/binutils-gdb
+endif
+NEWLIB_SRCDIR		:= @with_newlib_src@
+ifeq ($(NEWLIB_SRCDIR),)
 NEWLIB_SRCDIR		:= $(srcdir)/newlib
+endif
+GCC_SRCDIR		:= @with_gcc_src@
+ifeq ($(GCC_SRCDIR),)
 GCC_SRCDIR		:= $(srcdir)/gcc
+endif
+GLIBC_SRCDIR		:= @with_glibc_src@
+ifeq ($(GLIBC_SRCDIR),)
 GLIBC_SRCDIR		:= $(srcdir)/glibc
+endif
+LINUX_SRCDIR		:= @with_linux_src@
+ifeq ($(LINUX_SRCDIR),)
 LINUX_SRCDIR		:= $(srcdir)/linux
+endif
+QEMU_SRCDIR		:= @with_qemu_src@
+ifeq ($(QEMU_SRCDIR),)
 QEMU_SRCDIR		:= $(srcdir)/qemu
+endif
 
 SYSROOT := $(INSTALL_DIR)/sysroot
 

configure.ac

@@ -164,6 +164,27 @@ AS_IF([test "x$with_cmodel" != x],
 	[AC_SUBST(cmodel, "")])
 #	[AC_SUBST(cmodel, -mcmodel=medlow)])
 
+AC_DEFUN([AX_ARG_WITH_SRC],
+	[{m4_pushdef([opt_name], with_$1_src)
+	  AC_ARG_WITH($1-src,
+		[AS_HELP_STRING([--with-$1-src],[Set $1 source path, use builtin source by default])],
+		[],
+		[opt_name=default]
+		)
+	  AS_IF([test "x$opt_name" != xdefault],
+		[AC_SUBST(opt_name,$opt_name)],
+		[AC_SUBST(opt_name,"\$(srcdir)/$2")])
+	  m4_popdef([opt_name])
+	}])
+
+AX_ARG_WITH_SRC(binutils, binutils)
+AX_ARG_WITH_SRC(newlib, newlib)
+AX_ARG_WITH_SRC(gcc, gcc)
+AX_ARG_WITH_SRC(glibc, glibc)
+AX_ARG_WITH_SRC(linux, linux)
+AX_ARG_WITH_SRC(qemu, qemu)
+
+
 AC_ARG_WITH(target_cflags,
 	[AS_HELP_STRING([--with-target-cflags],
 		[Add extra target flags for C for library code])],