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From fc6621435a64a9d69aa251b70361da94cf2db6be Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Fri, 20 Feb 2015 10:25:11 +0000
Subject: [PATCH 31/46] Ensure target gcc headers can be included

There are a few headers installed as part of the OpenEmbedded
gcc-runtime target (omp.h, ssp/*.h). Being installed from a recipe
built for the target architecture, these are within the target
sysroot and not cross/nativesdk; thus they weren't able to be
found by gcc with the existing search paths. Add support for
picking up these headers under the sysroot supplied on the gcc
command line in order to resolve this.

Upstream-Status: Pending

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 gcc/Makefile.in  | 2 ++
 gcc/cppdefault.c | 4 ++++
 gcc/defaults.h   | 9 +++++++++
 gcc/gcc.c        | 7 -------
 4 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index 450cb79..cc75536 100644
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -593,6 +593,7 @@ libexecdir = @libexecdir@
 
 # Directory in which the compiler finds libraries etc.
 libsubdir = $(libdir)/gcc/$(real_target_noncanonical)/$(version)$(accel_dir_suffix)
+libsubdir_target = gcc/$(target_noncanonical)/$(version)
 # Directory in which the compiler finds executables
 libexecsubdir = $(libexecdir)/gcc/$(real_target_noncanonical)/$(version)$(accel_dir_suffix)
 # Directory in which all plugin resources are installed
@@ -2688,6 +2689,7 @@ CFLAGS-intl.o += -DLOCALEDIR=\"$(localedir)\"
 
 PREPROCESSOR_DEFINES = \
   -DGCC_INCLUDE_DIR=\"$(libsubdir)/include\" \
+  -DGCC_INCLUDE_SUBDIR_TARGET=\"$(libsubdir_target)/include\" \
   -DFIXED_INCLUDE_DIR=\"$(libsubdir)/include-fixed\" \
   -DGPLUSPLUS_INCLUDE_DIR=\"$(gcc_gxx_include_dir)\" \
   -DGPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT=$(gcc_gxx_include_dir_add_sysroot) \
diff --git a/gcc/cppdefault.c b/gcc/cppdefault.c
index 54aaf06..7b4dd51 100644
--- a/gcc/cppdefault.c
+++ b/gcc/cppdefault.c
@@ -59,6 +59,10 @@ const struct default_include cpp_include_defaults[]
     /* This is the dir for gcc's private headers.  */
     { GCC_INCLUDE_DIR, "GCC", 0, 0, 0, 0 },
 #endif
+#ifdef GCC_INCLUDE_SUBDIR_TARGET
+    /* This is the dir for gcc's private headers under the specified sysroot.  */
+    { STANDARD_STARTFILE_PREFIX_2 GCC_INCLUDE_SUBDIR_TARGET, "GCC", 0, 0, 1, 0 },
+#endif
 #ifdef LOCAL_INCLUDE_DIR
     /* /usr/local/include comes before the fixincluded header files.  */
     { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 },
diff --git a/gcc/defaults.h b/gcc/defaults.h
index 3e18338..0f317f2 100644
--- a/gcc/defaults.h
+++ b/gcc/defaults.h
@@ -1492,4 +1492,13 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 #define DWARF_GNAT_ENCODINGS_DEFAULT DWARF_GNAT_ENCODINGS_GDB
 #endif
 
+/* Default prefixes to attach to command names.  */
+
+#ifndef STANDARD_STARTFILE_PREFIX_1
+#define STANDARD_STARTFILE_PREFIX_1 "/lib/"
+#endif
+#ifndef STANDARD_STARTFILE_PREFIX_2
+#define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
+#endif
+
 #endif  /* ! GCC_DEFAULTS_H */
diff --git a/gcc/gcc.c b/gcc/gcc.c
index 04fa81d..9750cc2 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -1450,13 +1450,6 @@ static const char *gcc_libexec_prefix;
 
 /* Default prefixes to attach to command names.  */
 
-#ifndef STANDARD_STARTFILE_PREFIX_1
-#define STANDARD_STARTFILE_PREFIX_1 "/lib/"
-#endif
-#ifndef STANDARD_STARTFILE_PREFIX_2
-#define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
-#endif
-
 #ifdef CROSS_DIRECTORY_STRUCTURE  /* Don't use these prefixes for a cross compiler.  */
 #undef MD_EXEC_PREFIX
 #undef MD_STARTFILE_PREFIX
-- 
2.8.2