forked from brl/citadel
214 lines
9.3 KiB
Diff
214 lines
9.3 KiB
Diff
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From ca14820ae834a62ef2b80b283e8f900714636272 Mon Sep 17 00:00:00 2001
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From: Khem Raj <raj.khem@gmail.com>
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Date: Mon, 7 Dec 2015 23:39:54 +0000
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Subject: [PATCH 36/47] handle sysroot support for nativesdk-gcc
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Being able to build a nativesdk gcc is useful, particularly in cases
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where the host compiler may be of an incompatible version (or a 32
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bit compiler is needed).
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Sadly, building nativesdk-gcc is not straight forward. We install
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nativesdk-gcc into a relocatable location and this means that its
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library locations can change. "Normal" sysroot support doesn't help
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in this case since the values of paths like "libdir" change, not just
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base root directory of the system.
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In order to handle this we do two things:
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a) Add %r into spec file markup which can be used for injected paths
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such as SYSTEMLIBS_DIR (see gcc_multilib_setup()).
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b) Add other paths which need relocation into a .gccrelocprefix section
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which the relocation code will notice and adjust automatically.
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Upstream-Status: Inappropriate
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RP 2015/7/28
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Signed-off-by: Khem Raj <raj.khem@gmail.com>
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---
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gcc/cppdefault.c | 50 +++++++++++++++++++++++++++++++++++++-------------
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gcc/cppdefault.h | 3 ++-
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gcc/gcc.c | 20 ++++++++++++++------
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3 files changed, 53 insertions(+), 20 deletions(-)
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diff --git a/gcc/cppdefault.c b/gcc/cppdefault.c
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index c8da0884872..43dc597a0c3 100644
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--- a/gcc/cppdefault.c
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+++ b/gcc/cppdefault.c
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@@ -35,6 +35,30 @@
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# undef CROSS_INCLUDE_DIR
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#endif
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+static char GPLUSPLUS_INCLUDE_DIRVAR[4096] __attribute__ ((section (".gccrelocprefix"))) = GPLUSPLUS_INCLUDE_DIR;
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+static char GCC_INCLUDE_DIRVAR[4096] __attribute__ ((section (".gccrelocprefix"))) = GCC_INCLUDE_DIR;
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+static char GPLUSPLUS_TOOL_INCLUDE_DIRVAR[4096] __attribute__ ((section (".gccrelocprefix"))) = GPLUSPLUS_TOOL_INCLUDE_DIR;
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+static char GPLUSPLUS_BACKWARD_INCLUDE_DIRVAR[4096] __attribute__ ((section (".gccrelocprefix"))) = GPLUSPLUS_BACKWARD_INCLUDE_DIR;
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+static char STANDARD_STARTFILE_PREFIX_2VAR[4096] __attribute__ ((section (".gccrelocprefix"))) = STANDARD_STARTFILE_PREFIX_2 GCC_INCLUDE_SUBDIR_TARGET;
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+#ifdef LOCAL_INCLUDE_DIR
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+static char LOCAL_INCLUDE_DIRVAR[4096] __attribute__ ((section (".gccrelocprefix"))) = LOCAL_INCLUDE_DIR;
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+#endif
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+#ifdef PREFIX_INCLUDE_DIR
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+static char PREFIX_INCLUDE_DIRVAR[4096] __attribute__ ((section (".gccrelocprefix"))) = PREFIX_INCLUDE_DIR;
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+#endif
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+#ifdef FIXED_INCLUDE_DIR
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+static char FIXED_INCLUDE_DIRVAR[4096] __attribute__ ((section (".gccrelocprefix"))) = FIXED_INCLUDE_DIR;
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+#endif
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+#ifdef CROSS_INCLUDE_DIR
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+static char CROSS_INCLUDE_DIRVAR[4096] __attribute__ ((section (".gccrelocprefix"))) = CROSS_INCLUDE_DIR;
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+#endif
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+#ifdef TOOL_INCLUDE_DIR
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+static char TOOL_INCLUDE_DIRVAR[4096] __attribute__ ((section (".gccrelocprefix"))) = TOOL_INCLUDE_DIR;
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+#endif
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+#ifdef NATIVE_SYSTEM_HEADER_DIR
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+static char NATIVE_SYSTEM_HEADER_DIRVAR[4096] __attribute__ ((section (".gccrelocprefix"))) = NATIVE_SYSTEM_HEADER_DIR;
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+#endif
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+
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const struct default_include cpp_include_defaults[]
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#ifdef INCLUDE_DEFAULTS
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= INCLUDE_DEFAULTS;
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@@ -42,38 +66,38 @@ const struct default_include cpp_include_defaults[]
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= {
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#ifdef GPLUSPLUS_INCLUDE_DIR
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/* Pick up GNU C++ generic include files. */
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- { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1,
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+ { GPLUSPLUS_INCLUDE_DIRVAR, "G++", 1, 1,
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GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
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#endif
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#ifdef GPLUSPLUS_TOOL_INCLUDE_DIR
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/* Pick up GNU C++ target-dependent include files. */
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- { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1,
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+ { GPLUSPLUS_TOOL_INCLUDE_DIRVAR, "G++", 1, 1,
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GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 },
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#endif
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#ifdef GPLUSPLUS_BACKWARD_INCLUDE_DIR
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/* Pick up GNU C++ backward and deprecated include files. */
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- { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1,
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+ { GPLUSPLUS_BACKWARD_INCLUDE_DIRVAR, "G++", 1, 1,
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GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
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#endif
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#ifdef GCC_INCLUDE_DIR
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/* This is the dir for gcc's private headers. */
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- { GCC_INCLUDE_DIR, "GCC", 0, 0, 0, 0 },
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+ { GCC_INCLUDE_DIRVAR, "GCC", 0, 0, 0, 0 },
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#endif
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#ifdef GCC_INCLUDE_SUBDIR_TARGET
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/* This is the dir for gcc's private headers under the specified sysroot. */
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- { STANDARD_STARTFILE_PREFIX_2 GCC_INCLUDE_SUBDIR_TARGET, "GCC", 0, 0, 1, 0 },
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+ { STANDARD_STARTFILE_PREFIX_2VAR, "GCC", 0, 0, 1, 0 },
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#endif
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#ifdef LOCAL_INCLUDE_DIR
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/* /usr/local/include comes before the fixincluded header files. */
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- { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 },
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- { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
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+ { LOCAL_INCLUDE_DIRVAR, 0, 0, 1, 1, 2 },
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+ { LOCAL_INCLUDE_DIRVAR, 0, 0, 1, 1, 0 },
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#endif
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#ifdef PREFIX_INCLUDE_DIR
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- { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0 },
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+ { PREFIX_INCLUDE_DIRVAR, 0, 0, 1, 0, 0 },
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#endif
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#ifdef FIXED_INCLUDE_DIR
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/* This is the dir for fixincludes. */
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- { FIXED_INCLUDE_DIR, "GCC", 0, 0, 0,
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+ { FIXED_INCLUDE_DIRVAR, "GCC", 0, 0, 0,
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/* A multilib suffix needs adding if different multilibs use
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different headers. */
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#ifdef SYSROOT_HEADERS_SUFFIX_SPEC
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@@ -85,16 +109,16 @@ const struct default_include cpp_include_defaults[]
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#endif
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#ifdef CROSS_INCLUDE_DIR
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/* One place the target system's headers might be. */
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- { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0 },
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+ { CROSS_INCLUDE_DIRVAR, "GCC", 0, 0, 0, 0 },
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#endif
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#ifdef TOOL_INCLUDE_DIR
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/* Another place the target system's headers might be. */
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- { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0 },
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+ { TOOL_INCLUDE_DIRVAR, "BINUTILS", 0, 1, 0, 0 },
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#endif
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#ifdef NATIVE_SYSTEM_HEADER_DIR
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/* /usr/include comes dead last. */
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- { NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 2 },
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- { NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 0 },
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+ { NATIVE_SYSTEM_HEADER_DIRVAR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 2 },
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+ { NATIVE_SYSTEM_HEADER_DIRVAR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 0 },
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#endif
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{ 0, 0, 0, 0, 0, 0 }
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};
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diff --git a/gcc/cppdefault.h b/gcc/cppdefault.h
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index 17bbb0eaef7..a937ec1d187 100644
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--- a/gcc/cppdefault.h
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+++ b/gcc/cppdefault.h
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@@ -33,7 +33,8 @@
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struct default_include
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{
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- const char *const fname; /* The name of the directory. */
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+ const char *fname; /* The name of the directory. */
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+
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const char *const component; /* The component containing the directory
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(see update_path in prefix.c) */
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const char cplusplus; /* Only look here if we're compiling C++. */
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diff --git a/gcc/gcc.c b/gcc/gcc.c
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index b27245dbf77..e015c77f15f 100644
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--- a/gcc/gcc.c
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+++ b/gcc/gcc.c
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@@ -247,6 +247,8 @@ FILE *report_times_to_file = NULL;
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#endif
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static const char *target_system_root = DEFAULT_TARGET_SYSTEM_ROOT;
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+static char target_relocatable_prefix[4096] __attribute__ ((section (".gccrelocprefix"))) = SYSTEMLIBS_DIR;
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+
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/* Nonzero means pass the updated target_system_root to the compiler. */
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static int target_system_root_changed;
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@@ -518,6 +520,7 @@ or with constant text in a single argument.
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%G process LIBGCC_SPEC as a spec.
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%R Output the concatenation of target_system_root and
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target_sysroot_suffix.
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+ %r Output the base path target_relocatable_prefix
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%S process STARTFILE_SPEC as a spec. A capital S is actually used here.
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%E process ENDFILE_SPEC as a spec. A capital E is actually used here.
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%C process CPP_SPEC as a spec.
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@@ -1495,10 +1498,10 @@ static const char *gcc_libexec_prefix;
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gcc_exec_prefix is set because, in that case, we know where the
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compiler has been installed, and use paths relative to that
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location instead. */
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-static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
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-static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
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-static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
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-static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
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+static char standard_exec_prefix[4096] __attribute__ ((section (".gccrelocprefix"))) = STANDARD_EXEC_PREFIX;
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+static char standard_libexec_prefix[4096] __attribute__ ((section (".gccrelocprefix"))) = STANDARD_LIBEXEC_PREFIX;
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+static char standard_bindir_prefix[4096] __attribute__ ((section (".gccrelocprefix"))) = STANDARD_BINDIR_PREFIX;
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+static char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
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/* For native compilers, these are well-known paths containing
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components that may be provided by the system. For cross
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@@ -1506,9 +1509,9 @@ static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
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static const char *md_exec_prefix = MD_EXEC_PREFIX;
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static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
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static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
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-static const char *const standard_startfile_prefix_1
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+static char standard_startfile_prefix_1[4096] __attribute__ ((section (".gccrelocprefix")))
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= STANDARD_STARTFILE_PREFIX_1;
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-static const char *const standard_startfile_prefix_2
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+static char standard_startfile_prefix_2[4096] __attribute__ ((section (".gccrelocprefix")))
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= STANDARD_STARTFILE_PREFIX_2;
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/* A relative path to be used in finding the location of tools
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@@ -5826,6 +5829,11 @@ do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
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}
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break;
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+ case 'r':
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+ obstack_grow (&obstack, target_relocatable_prefix,
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+ strlen (target_relocatable_prefix));
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+ break;
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+
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case 'S':
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value = do_spec_1 (startfile_spec, 0, NULL);
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if (value != 0)
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--
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2.12.2
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