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|
# DP: Add empty distro and hardening specs
--- a/src/gcc/gcc.cc
+++ b/src/gcc/gcc.cc
@@ -27,6 +27,11 @@ CC recognizes how to compile each input
Once it knows which kind of compilation to perform, the procedure for
compilation is specified by a string called a "spec". */
+/* Inject some default compilation flags which are used as the default.
+ Done by the packaging build system. Should that be done in the headers
+ gcc/config/<arch>/*.h instead? */
+#include "distro-defaults.h"
+
#define INCLUDE_STRING
#include "config.h"
#include "system.h"
@@ -971,6 +976,90 @@ proper position among the other output f
#define LINK_GCC_C_SEQUENCE_SPEC "%G %{!nolibc:%L %G}"
#endif
+/* Generate full unwind information covering all program points.
+ Only needed for some architectures. */
+#ifndef ASYNC_UNWIND_SPEC
+# ifdef DIST_DEFAULT_ASYNC_UNWIND
+# define ASYNC_UNWIND_SPEC "%{!fno-asynchronous-unwind-tables:-fasynchronous-unwind-tables}"
+# else
+# define ASYNC_UNWIND_SPEC ""
+# endif
+#endif
+
+/* Turn on stack protector.
+ */
+#ifndef SSP_DEFAULT_SPEC
+# ifdef DIST_DEFAULT_SSP
+# ifdef DIST_DEFAULT_SSP_STRONG
+# define SSP_DEFAULT_SPEC " %{!fno-stack-protector:%{!fstack-protector-all:%{!ffreestanding:%{!nostdlib:%{!fstack-protector:-fstack-protector-strong}}}}}"
+# else
+# define SSP_DEFAULT_SPEC " %{!fno-stack-protector:%{!fstack-protector-all:%{!ffreestanding:%{!nostdlib:-fstack-protector}}}}"
+# endif
+# else
+# define SSP_DEFAULT_SPEC ""
+# endif
+#endif
+
+/* Turn on -Wformat -Wformat-security by default for C, C++,
+ ObjC, ObjC++. */
+#ifndef FORMAT_SECURITY_SPEC
+# ifdef DIST_DEFAULT_FORMAT_SECURITY
+# define FORMAT_SECURITY_SPEC " %{!Wformat:%{!Wformat=2:%{!Wformat=0:%{!Wall:-Wformat} %{!Wno-format-security:-Wformat-security}}}}"
+# else
+# define FORMAT_SECURITY_SPEC ""
+# endif
+#endif
+
+/* Enable -fstack-clash-protection by default. Only available
+ on some targets. */
+#ifndef STACK_CLASH_SPEC
+# ifdef DIST_DEFAULT_STACK_CLASH
+# define STACK_CLASH_SPEC " %{!fno-stack-clash-protection:-fstack-clash-protection}"
+# else
+# define STACK_CLASH_SPEC ""
+# endif
+#endif
+
+/* Enable code instrumentation of control-flow transfers.
+ Available on x86 and x86_64. */
+#ifndef CF_PROTECTION_SPEC
+# ifdef DIST_DEFAULT_CF_PROTECTION
+# define CF_PROTECTION_SPEC " %{!m16:%{!m32:%{!fcf-protection*:%{!fno-cf-protection:-fcf-protection}}}}"
+# else
+# define CF_PROTECTION_SPEC ""
+# endif
+#endif
+
+#ifndef BIND_NOW_SPEC
+# if defined(DIST_DEFAULT_BIND_NOW) && !defined(ACCEL_COMPILER)
+# define BIND_NOW_SPEC " -z now"
+# else
+# define BIND_NOW_SPEC ""
+# endif
+#endif
+
+#ifndef RELRO_SPEC
+# ifdef DIST_DEFAULT_RELRO
+# define RELRO_SPEC " -z relro "
+# else
+# define RELRO_SPEC ""
+# endif
+#endif
+
+/* Don't enable any of those for the offload compilers,
+ unsupported. */
+#if !defined(DISTRO_DEFAULT_SPEC) && !defined(ACCEL_COMPILER)
+# define DISTRO_DEFAULT_SPEC ASYNC_UNWIND_SPEC SSP_DEFAULT_SPEC \
+ FORMAT_SECURITY_SPEC STACK_CLASH_SPEC CF_PROTECTION_SPEC
+#else
+# define DISTRO_DEFAULT_SPEC ""
+#endif
+#if !defined(DISTRO_DEFAULT_LINK_SPEC) && !defined(ACCEL_COMPILER)
+# define DISTRO_DEFAULT_LINK_SPEC RELRO_SPEC
+#else
+# define DISTRO_DEFAULT_LINK_SPEC ""
+#endif
+
#ifndef LINK_SSP_SPEC
#ifdef TARGET_LIBC_PROVIDES_SSP
#define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
@@ -1027,7 +1116,7 @@ proper position among the other output f
#ifndef LINK_PIE_SPEC
#ifdef HAVE_LD_PIE
#ifndef LD_PIE_SPEC
-#define LD_PIE_SPEC "-pie"
+#define LD_PIE_SPEC "-pie" BIND_NOW_SPEC
#endif
#else
#define LD_PIE_SPEC ""
@@ -1144,6 +1233,7 @@ proper position among the other output f
"%{flto|flto=*:%<fcompare-debug*} \
%{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC \
"%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \
+ DISTRO_DEFAULT_LINK_SPEC \
"%X %{o*} %{e*} %{N} %{n} %{r}\
%{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!r:%{!nostartfiles:%S}}} \
%{static|no-pie|static-pie:} %@{L*} %(mfwrap) %(link_libgcc) " \
@@ -1184,6 +1274,7 @@ static const char *cpp_spec = CPP_SPEC;
static const char *cc1_spec = CC1_SPEC OS_CC1_SPEC;
static const char *cc1plus_spec = CC1PLUS_SPEC;
static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
+static const char *distro_default_spec = DISTRO_DEFAULT_SPEC;
static const char *link_ssp_spec = LINK_SSP_SPEC;
static const char *asm_spec = ASM_SPEC;
static const char *asm_final_spec = ASM_FINAL_SPEC;
@@ -1242,7 +1333,7 @@ static const char *cpp_options =
"%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
%{f*} %{g*:%{%:debug-level-gt(0):%{g*}\
%{!fno-working-directory:-fworking-directory}}} %{O*}\
- %{undef} %{save-temps*:-fpch-preprocess}";
+ %{undef} %{save-temps*:-fpch-preprocess} %(distro_defaults)";
/* Pass -d* flags, possibly modifying -dumpdir, -dumpbase et al.
@@ -1436,9 +1527,9 @@ static const struct compiler default_com
%{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
%(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
- %(cc1_options)}\
+ %(cc1_options)%(distro_defaults)}\
%{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
- cc1 %(cpp_unique_options) %(cc1_options)}}}\
+ cc1 %(cpp_unique_options) %(cc1_options) %(distro_defaults)}}}\
%{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
{"-",
"%{!E:%e-E or -x required when input is from standard input}\
@@ -1452,18 +1543,18 @@ static const struct compiler default_com
%{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
%(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
- %(cc1_options)\
+ %(cc1_options) %(distro_defaults)\
%{!fsyntax-only:%{!S:-o %g.s} \
%{!fdump-ada-spec*:%{!o*:--output-pch %i.gch}\
%W{o*:--output-pch %*}}%V}}\
%{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
- cc1 %(cpp_unique_options) %(cc1_options)\
+ cc1 %(cpp_unique_options) %(cc1_options) %(distro_defaults)\
%{!fsyntax-only:%{!S:-o %g.s} \
%{!fdump-ada-spec*:%{!o*:--output-pch %i.gch}\
%W{o*:--output-pch %*}}%V}}}}}}}", 0, 0, 0},
{".i", "@cpp-output", 0, 0, 0},
{"@cpp-output",
- "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
+ "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %(distro_defaults) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
{".s", "@assembler", 0, 0, 0},
{"@assembler",
"%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
@@ -1695,6 +1786,7 @@ static struct spec_list static_specs[] =
INIT_STATIC_SPEC ("cc1_options", &cc1_options),
INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
+ INIT_STATIC_SPEC ("distro_defaults", &distro_default_spec),
INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
INIT_STATIC_SPEC ("endfile", &endfile_spec),
INIT_STATIC_SPEC ("link", &link_spec),
--- a/src/gcc/cp/lang-specs.h
+++ b/src/gcc/cp/lang-specs.h
@@ -51,7 +51,7 @@ along with GCC; see the file COPYING3.
" %{save-temps*:%b.ii} %{!save-temps*:%g.ii}}"
" %{!save-temps*:%{!no-integrated-cpp:%(cpp_unique_options)}}"
" %{fmodules-ts:-fmodule-header %{fpreprocessed:-fdirectives-only}}"
- " %(cc1_options) %2"
+ " %(cc1_options) %(distro_defaults) %2"
" %{!fsyntax-only:"
" %{!S:-o %g.s%V}"
" %{!fmodule-*:%{!fmodules-*:%{!fdump-ada-spec*:"
@@ -72,7 +72,7 @@ along with GCC; see the file COPYING3.
" %{!save-temps*:%{!no-integrated-cpp:%(cpp_unique_options)}}"
" %{fmodules-ts:-fmodule-header=system"
" %{fpreprocessed:-fdirectives-only}}"
- " %(cc1_options) %2"
+ " %(cc1_options) %(distro_defaults) %2"
" %{!fsyntax-only:"
" %{!S:-o %g.s%V}"
" %{!fmodule-*:%{!fmodules-*:%{!fdump-ada-spec*:"
@@ -92,7 +92,7 @@ along with GCC; see the file COPYING3.
" %{save-temps*:%b.ii} %{!save-temps*:%g.ii}}"
" %{!save-temps*:%{!no-integrated-cpp:%(cpp_unique_options)}}"
" %{fmodules-ts:-fmodule-header=user %{fpreprocessed:-fdirectives-only}}"
- " %(cc1_options) %2"
+ " %(cc1_options) %(distro_defaults) %2"
" %{!fsyntax-only:"
" %{!S:-o %g.s%V}"
" %{!fmodule-*:%{!fmodules-*:%{!fdump-ada-spec*:"
@@ -107,7 +107,7 @@ along with GCC; see the file COPYING3.
" cc1plus %{save-temps*|no-integrated-cpp:-fpreprocessed"
" %{save-temps*:%b.ii} %{!save-temps*:%g.ii}}"
" %{!save-temps*:%{!no-integrated-cpp:%(cpp_unique_options)}}"
- " %(cc1_options) %2"
+ " %(cc1_options) %(distro_defaults) %2"
" %{!fsyntax-only:"
" %{fmodule-only:%{!S:-o %g.s%V}}"
" %{!fmodule-only:%(invoke_as)}}"
@@ -116,7 +116,7 @@ along with GCC; see the file COPYING3.
{".ii", "@c++-cpp-output", 0, 0, 0},
{"@c++-cpp-output",
"%{!E:%{!M:%{!MM:"
- " cc1plus -fpreprocessed %i %(cc1_options) %2"
+ " cc1plus -fpreprocessed %i %(cc1_options) %(distro_defaults) %2"
" %{!fsyntax-only:"
" %{fmodule-only:%{!S:-o %g.s%V}}"
" %{!fmodule-only:%{!fmodule-header*:%(invoke_as)}}}"
--- a/src/gcc/objc/lang-specs.h
+++ b/src/gcc/objc/lang-specs.h
@@ -29,9 +29,9 @@ along with GCC; see the file COPYING3.
%{traditional|traditional-cpp:\
%eGNU Objective C no longer supports traditional compilation}\
%{save-temps*|no-integrated-cpp:cc1obj -E %(cpp_options) -o %{save-temps*:%b.mi} %{!save-temps*:%g.mi} \n\
- cc1obj -fpreprocessed %{save-temps*:%b.mi} %{!save-temps*:%g.mi} %(cc1_options) %{print-objc-runtime-info} %{gen-decls}}\
+ cc1obj -fpreprocessed %{save-temps*:%b.mi} %{!save-temps*:%g.mi} %(cc1_options) %(distro_defaults) %{print-objc-runtime-info} %{gen-decls}}\
%{!save-temps*:%{!no-integrated-cpp:\
- cc1obj %(cpp_unique_options) %(cc1_options) %{print-objc-runtime-info} %{gen-decls}}}\
+ cc1obj %(cpp_unique_options) %(cc1_options) %(distro_defaults) %{print-objc-runtime-info} %{gen-decls}}}\
%{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
{"@objective-c-header",
"%{E|M|MM:cc1obj -E %{traditional|traditional-cpp:-traditional-cpp}\
@@ -40,7 +40,7 @@ along with GCC; see the file COPYING3.
%{traditional|traditional-cpp:\
%eGNU Objective C no longer supports traditional compilation}\
%{save-temps*|no-integrated-cpp:cc1obj -E %(cpp_options) -o %{save-temps*:%b.mi} %{!save-temps*:%g.mi} \n\
- cc1obj -fpreprocessed %b.mi %(cc1_options) %{print-objc-runtime-info} %{gen-decls}\
+ cc1obj -fpreprocessed %b.mi %(cc1_options) %(distro_defaults) %{print-objc-runtime-info} %{gen-decls}\
-o %g.s %{!o*:--output-pch %i.gch}\
%W{o*:--output-pch %*}%V}\
%{!save-temps*:%{!no-integrated-cpp:\
@@ -49,9 +49,9 @@ along with GCC; see the file COPYING3.
%W{o*:--output-pch %*}%V}}}}}", 0, 0, 0},
{".mi", "@objective-c-cpp-output", 0, 0, 0},
{"@objective-c-cpp-output",
- "%{!M:%{!MM:%{!E:cc1obj -fpreprocessed %i %(cc1_options) %{print-objc-runtime-info} %{gen-decls}\
+ "%{!M:%{!MM:%{!E:cc1obj -fpreprocessed %i %(cc1_options) %(distro_defaults) %{print-objc-runtime-info} %{gen-decls}\
%{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
{"@objc-cpp-output",
"%nobjc-cpp-output is deprecated; please use objective-c-cpp-output instead\n\
- %{!M:%{!MM:%{!E:cc1obj -fpreprocessed %i %(cc1_options) %{print-objc-runtime-info} %{gen-decls}\
+ %{!M:%{!MM:%{!E:cc1obj -fpreprocessed %i %(cc1_options) %(distro_defaults) %{print-objc-runtime-info} %{gen-decls}\
%{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
--- a/src/gcc/objcp/lang-specs.h
+++ b/src/gcc/objcp/lang-specs.h
@@ -36,7 +36,7 @@ along with GCC; see the file COPYING3.
%(cpp_options) %2 -o %{save-temps*:%b.mii} %{!save-temps*:%g.mii} \n}\
cc1objplus %{save-temps*|no-integrated-cpp:-fpreprocessed %{save-temps*:%b.mii} %{!save-temps*:%g.mii}}\
%{!save-temps*:%{!no-integrated-cpp:%(cpp_unique_options)}}\
- %(cc1_options) %2\
+ %(cc1_options) %(distro_defaults) %2\
-o %g.s %{!o*:--output-pch %i.gch} %W{o*:--output-pch %*}%V}}}",
CPLUSPLUS_CPP_SPEC, 0, 0},
{"@objective-c++",
@@ -46,16 +46,16 @@ along with GCC; see the file COPYING3.
%(cpp_options) %2 -o %{save-temps*:%b.mii} %{!save-temps*:%g.mii} \n}\
cc1objplus %{save-temps*|no-integrated-cpp:-fpreprocessed %{save-temps*:%b.mii} %{!save-temps*:%g.mii}}\
%{!save-temps*:%{!no-integrated-cpp:%(cpp_unique_options)}}\
- %(cc1_options) %2\
+ %(cc1_options) %(distro_defaults) %2\
%{!fsyntax-only:%(invoke_as)}}}}",
CPLUSPLUS_CPP_SPEC, 0, 0},
{".mii", "@objective-c++-cpp-output", 0, 0, 0},
{"@objective-c++-cpp-output",
"%{!M:%{!MM:%{!E:\
- cc1objplus -fpreprocessed %i %(cc1_options) %2\
+ cc1objplus -fpreprocessed %i %(cc1_options) %(distro_defaults) %2\
%{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
{"@objc++-cpp-output",
"%nobjc++-cpp-output is deprecated; please use objective-c++-cpp-output instead\n\
%{!M:%{!MM:%{!E:\
- cc1objplus -fpreprocessed %i %(cc1_options) %2\
+ cc1objplus -fpreprocessed %i %(cc1_options) %(distro_defaults) %2\
%{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
--- a/src/gcc/c-family/c-cppbuiltin.cc
+++ b/src/gcc/c-family/c-cppbuiltin.cc
@@ -34,6 +34,11 @@ along with GCC; see the file COPYING3.
#include "cppbuiltin.h"
#include "configargs.h"
+/* Inject some default compilation flags which are used as the default.
+ Done by the packaging build system. Should that be done in the headers
+ in gcc/config/<arch>/ instead? */
+#include "distro-defaults.h"
+
#ifndef TARGET_OS_CPP_BUILTINS
# define TARGET_OS_CPP_BUILTINS()
#endif
@@ -1546,6 +1551,12 @@ c_cpp_builtins (cpp_reader *pfile)
builtin_define_with_value ("__REGISTER_PREFIX__", REGISTER_PREFIX, 0);
builtin_define_with_value ("__USER_LABEL_PREFIX__", user_label_prefix, 0);
+#ifdef DIST_DEFAULT_FORTIFY_SOURCE
+ /* Fortify Source enabled by default for optimization levels > 0 */
+ if (optimize)
+ builtin_define_with_int_value ("_FORTIFY_SOURCE", DIST_DEFAULT_FORTIFY_SOURCE);
+#endif
+
/* Misc. */
if (flag_gnu89_inline)
cpp_define (pfile, "__GNUC_GNU_INLINE__");
|
