gcc-4.6: share work directories

* Fix configure and Makefile to read the defaults.h and t-oe from ${B},
  so that the ${S} can be shared.

* Change ${S} to the shared source directory.

(From OE-Core rev: c1ec5100da76d35afb91de7353599564e5b653dc)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/gcc/gcc-4.6.inc

@@ -66,11 +66,14 @@ SRC_URI = "svn://gcc.gnu.org/svn/gcc/branches;module=${BRANCH};proto=http \
 	   file://GPLUSPLUS_INCLUDE_DIR_with_sysroot.patch \
 	   file://COLLECT_GCC_OPTIONS.patch \
            file://volatile_access_backport.patch \
+           file://use-defaults.h-and-t-oe-in-B.patch \
 	  "
 
 SRC_URI_append_sh3  = " file://sh3-installfix-fixheaders.patch;patch=1 "
 
-S = "${WORKDIR}/${BRANCH}"
+#S = "${WORKDIR}/${BRANCH}"
+S = "${TMPDIR}/work-shared/gcc-${PV}/${BRANCH}"
+B = "${WORKDIR}/${BRANCH}/build.${HOST_SYS}.${TARGET_SYS}"
 
 # Language Overrides
 FORTRAN = ""

meta/recipes-devtools/gcc/gcc-4.6/use-defaults.h-and-t-oe-in-B.patch

@@ -0,0 +1,80 @@
+Upstream-Status: Pending
+
+Use the defaults.h in ${B} instead of ${S}, and t-oe in ${B}, so that
+the source can be shared between gcc-cross-initial,
+gcc-cross-intermediate, gcc-cross, gcc-runtime, and also the sdk build.
+---
+ gcc/Makefile.in  |    2 +-
+ gcc/configure    |    4 ++--
+ gcc/configure.ac |    4 ++--
+ gcc/mkconfig.sh  |    4 ++--
+ 4 files changed, 7 insertions(+), 7 deletions(-)
+
+diff --git a/gcc/Makefile.in b/gcc/Makefile.in
+index 7790915..3a0c34a 100644
+--- a/gcc/Makefile.in
++++ b/gcc/Makefile.in
+@@ -463,7 +463,7 @@ LIMITS_H_TEST = [ -f $(SYSTEM_HEADER_DIR)/limits.h ]
+ TARGET_SYSTEM_ROOT = @TARGET_SYSTEM_ROOT@
+ 
+ xmake_file=@xmake_file@
+-tmake_file=@tmake_file@
++tmake_file=@tmake_file@ ./t-oe
+ TM_ENDIAN_CONFIG=@TM_ENDIAN_CONFIG@
+ TM_MULTILIB_CONFIG=@TM_MULTILIB_CONFIG@
+ TM_MULTILIB_EXCEPTIONS_CONFIG=@TM_MULTILIB_EXCEPTIONS_CONFIG@
+diff --git a/gcc/configure b/gcc/configure
+index 82fa3e4..d4711b5 100755
+--- a/gcc/configure
++++ b/gcc/configure
+@@ -11227,8 +11227,8 @@ for f in $tm_file; do
+        tm_include_list="${tm_include_list} $f"
+        ;;
+     defaults.h )
+-       tm_file_list="${tm_file_list} \$(srcdir)/$f"
+-       tm_include_list="${tm_include_list} $f"
++       tm_file_list="${tm_file_list} ./$f"
++       tm_include_list="${tm_include_list} ./$f"
+        ;;
+     * )
+        tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
+diff --git a/gcc/configure.ac b/gcc/configure.ac
+index 844d8da..a960343 100644
+--- a/gcc/configure.ac
++++ b/gcc/configure.ac
+@@ -1628,8 +1628,8 @@ for f in $tm_file; do
+        tm_include_list="${tm_include_list} $f"
+        ;;
+     defaults.h )
+-       tm_file_list="${tm_file_list} \$(srcdir)/$f"
+-       tm_include_list="${tm_include_list} $f"
++       tm_file_list="${tm_file_list} ./$f"
++       tm_include_list="${tm_include_list} ./$f"
+        ;;
+     * )
+        tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
+diff --git a/gcc/mkconfig.sh b/gcc/mkconfig.sh
+index d56df8c..875d0f1 100644
+--- a/gcc/mkconfig.sh
++++ b/gcc/mkconfig.sh
+@@ -77,7 +77,7 @@ if [ -n "$HEADERS" ]; then
+     if [ $# -ge 1 ]; then
+ 	echo '#ifdef IN_GCC' >> ${output}T
+ 	for file in "$@"; do
+-	    if test x"$file" = x"defaults.h"; then
++	    if test x"$file" = x"./defaults.h"; then
+ 		postpone_defaults_h="yes"
+ 	    else
+ 		echo "# include \"$file\"" >> ${output}T
+@@ -103,7 +103,7 @@ esac
+ 
+ # If we postponed including defaults.h, add the #include now.
+ if test x"$postpone_defaults_h" = x"yes"; then
+-    echo "# include \"defaults.h\"" >> ${output}T
++    echo "# include \"./defaults.h\"" >> ${output}T
+ fi
+ 
+ # Add multiple inclusion protection guard, part two.
+-- 
+1.7.1
+