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# DP: Use /usr/include/<multiarch>/c++/4.x as the include directory
# DP: for host dependent c++ header files.
Index: b/src/libstdc++-v3/include/Makefile.am
===================================================================
--- a/src/libstdc++-v3/include/Makefile.am
+++ b/src/libstdc++-v3/include/Makefile.am
@@ -911,7 +911,7 @@ endif
host_srcdir = ${glibcxx_srcdir}/$(OS_INC_SRCDIR)
host_builddir = ./${host_alias}/bits
-host_installdir = ${gxx_include_dir}/${host_alias}$(MULTISUBDIR)/bits
+host_installdir = $(if $(shell $(CC) -print-multiarch),/usr/include/$(shell $(filter-out -m%,$(CC)) -print-multiarch)/c++/$(notdir ${gxx_include_dir})$(MULTISUBDIR)/bits,${gxx_include_dir}/${default_host_alias}$(MULTISUBDIR)/bits)
host_headers = \
${host_srcdir}/ctype_base.h \
${host_srcdir}/ctype_inline.h \
Index: b/src/libstdc++-v3/include/Makefile.in
===================================================================
--- a/src/libstdc++-v3/include/Makefile.in
+++ b/src/libstdc++-v3/include/Makefile.in
@@ -1193,7 +1193,7 @@ profile_impl_headers = \
@GLIBCXX_C_HEADERS_COMPATIBILITY_TRUE@c_compatibility_headers_extra = ${c_compatibility_headers}
host_srcdir = ${glibcxx_srcdir}/$(OS_INC_SRCDIR)
host_builddir = ./${host_alias}/bits
-host_installdir = ${gxx_include_dir}/${host_alias}$(MULTISUBDIR)/bits
+host_installdir = $(if $(shell $(CC) -print-multiarch),/usr/include/$(shell $(filter-out -m%,$(CC)) -print-multiarch)/c++/$(notdir ${gxx_include_dir})$(MULTISUBDIR)/bits,${gxx_include_dir}/${default_host_alias}$(MULTISUBDIR)/bits)
host_headers = \
${host_srcdir}/ctype_base.h \
${host_srcdir}/ctype_inline.h \
Index: b/src/gcc/Makefile.in
===================================================================
--- a/src/gcc/Makefile.in
+++ b/src/gcc/Makefile.in
@@ -1139,6 +1139,7 @@ FLAGS_TO_PASS = \
"prefix=$(prefix)" \
"local_prefix=$(local_prefix)" \
"gxx_include_dir=$(gcc_gxx_include_dir)" \
+ "gxx_tool_include_dir=$(gcc_gxx_tool_include_dir)" \
"build_tooldir=$(build_tooldir)" \
"gcc_tooldir=$(gcc_tooldir)" \
"bindir=$(bindir)" \
@@ -1636,6 +1637,14 @@ ifneq ($(xmake_file),)
include $(xmake_file)
endif
+# Directory in which the compiler finds target-dependent g++ includes.
+ifneq ($(call if_multiarch,non-empty),)
+ gcc_gxx_tool_include_dir = $(libsubdir)/$(libsubdir_to_prefix)include/$(MULTIARCH_DIRNAME)/c++/$(BASEVER_c)
+else
+ gcc_gxx_tool_include_dir = $(gcc_gxx_include_dir)/$(target_noncanonical)
+endif
+
+
# all-tree.def includes all the tree.def files.
all-tree.def: s-alltree; @true
s-alltree: Makefile
@@ -2673,7 +2682,7 @@ PREPROCESSOR_DEFINES = \
-DFIXED_INCLUDE_DIR=\"$(libsubdir)/include-fixed\" \
-DGPLUSPLUS_INCLUDE_DIR=\"$(gcc_gxx_include_dir)\" \
-DGPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT=$(gcc_gxx_include_dir_add_sysroot) \
- -DGPLUSPLUS_TOOL_INCLUDE_DIR=\"$(gcc_gxx_include_dir)/$(target_noncanonical)\" \
+ -DGPLUSPLUS_TOOL_INCLUDE_DIR=\"$(gcc_gxx_tool_include_dir)\" \
-DGPLUSPLUS_BACKWARD_INCLUDE_DIR=\"$(gcc_gxx_include_dir)/backward\" \
-DLOCAL_INCLUDE_DIR=\"$(local_includedir)\" \
-DCROSS_INCLUDE_DIR=\"$(CROSS_SYSTEM_HEADER_DIR)\" \
Index: b/src/gcc/cppdefault.c
===================================================================
--- a/src/gcc/cppdefault.c
+++ b/src/gcc/cppdefault.c
@@ -49,6 +49,8 @@ const struct default_include cpp_include
/* Pick up GNU C++ target-dependent include files. */
{ GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1,
GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 },
+ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1,
+ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 2 },
#endif
#ifdef GPLUSPLUS_BACKWARD_INCLUDE_DIR
/* Pick up GNU C++ backward and deprecated include files. */
Index: b/src/gcc/incpath.c
===================================================================
--- a/src/gcc/incpath.c
+++ b/src/gcc/incpath.c
@@ -158,6 +158,18 @@ add_standard_paths (const char *sysroot,
}
str = reconcat (str, str, dir_separator_str,
imultiarch, NULL);
+ if (p->cplusplus && strstr (str, "/c++/"))
+ {
+ char *suffix = strstr (str, "/c++/");
+ *suffix++ = '\0';
+ suffix = xstrdup (suffix);
+ str = reconcat (str, str, dir_separator_str,
+ imultiarch,
+ dir_separator_str, suffix, NULL);
+ }
+ else
+ str = reconcat (str, str, dir_separator_str,
+ imultiarch, NULL);
}
add_path (str, SYSTEM, p->cxx_aware, false);
}
@@ -222,7 +234,16 @@ add_standard_paths (const char *sysroot,
free (str);
continue;
}
- str = reconcat (str, str, dir_separator_str, imultiarch, NULL);
+ if (p->cplusplus && strstr (str, "/c++/"))
+ {
+ char *suffix = strstr (str, "/c++/");
+ *suffix++ = '\0';
+ suffix = xstrdup (suffix);
+ str = reconcat (str, str, dir_separator_str, imultiarch,
+ dir_separator_str, suffix, NULL);
+ }
+ else
+ str = reconcat (str, str, dir_separator_str, imultiarch, NULL);
}
add_path (str, SYSTEM, p->cxx_aware, false);
|
