+++ /dev/null
-From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
-Date: Fri, 8 May 2015 08:25:47 +0000 (+0000)
-Subject: [PATCH 2/13] musl libc config
-X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=a9173ceabaf29c16f8ef226fbf98af373a4b2ceb
-
-[PATCH 2/13] musl libc config
-
-2015-05-08 Gregor Richards <gregor.richards@uwaterloo.ca>
- Szabolcs Nagy <szabolcs.nagy@arm.com>
-
- * config.gcc (LIBC_MUSL): New tm_defines macro.
- * config/linux.h (OPTION_MUSL): Define.
- (MUSL_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER32,)
- (MUSL_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKERX32,)
- (INCLUDE_DEFAULTS_MUSL_GPP, INCLUDE_DEFAULTS_MUSL_LOCAL,)
- (INCLUDE_DEFAULTS_MUSL_PREFIX, INCLUDE_DEFAULTS_MUSL_CROSS,)
- (INCLUDE_DEFAULTS_MUSL_TOOL, INCLUDE_DEFAULTS_MUSL_NATIVE): Define.
- * config/linux.opt (mmusl): New option.
- * doc/invoke.texi (GNU/Linux Options): Document -mmusl.
- * configure.ac (gcc_cv_libc_provides_ssp): Add *-*-musl*.
- (gcc_cv_target_dl_iterate_phdr): Add *-linux-musl*.
- * configure: Regenerate.
-
-
-git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222904 138bc75d-0d04-0410-961f-82ee72b054a4
----
-
---- a/gcc/config.gcc
-+++ b/gcc/config.gcc
-@@ -575,7 +575,7 @@ case ${target} in
- esac
-
- # Common C libraries.
--tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
-+tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
-
- # 32-bit x86 processors supported by --with-arch=. Each processor
- # MUST be separated by exactly one space.
-@@ -720,6 +720,9 @@ case ${target} in
- *-*-*uclibc*)
- tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
- ;;
-+ *-*-*musl*)
-+ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
-+ ;;
- *)
- tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
- ;;
---- a/gcc/config/linux.h
-+++ b/gcc/config/linux.h
-@@ -32,10 +32,12 @@ see the files COPYING3 and COPYING.RUNTI
- #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
- #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
- #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
-+#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
- #else
- #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
- #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
- #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
-+#define OPTION_MUSL (linux_libc == LIBC_MUSL)
- #endif
-
- #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
-@@ -50,21 +52,25 @@ see the files COPYING3 and COPYING.RUNTI
- } while (0)
-
- /* Determine which dynamic linker to use depending on whether GLIBC or
-- uClibc or Bionic is the default C library and whether
-- -muclibc or -mglibc or -mbionic has been passed to change the default. */
-+ uClibc or Bionic or musl is the default C library and whether
-+ -muclibc or -mglibc or -mbionic or -mmusl has been passed to change
-+ the default. */
-
--#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
-- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
-+#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
-+ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
-
- #if DEFAULT_LIBC == LIBC_GLIBC
--#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
-- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
-+#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
-+ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
- #elif DEFAULT_LIBC == LIBC_UCLIBC
--#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
-- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
-+#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
-+ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
- #elif DEFAULT_LIBC == LIBC_BIONIC
--#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
-- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
-+#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
-+ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
-+#elif DEFAULT_LIBC == LIBC_MUSL
-+#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
-+ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
- #else
- #error "Unsupported DEFAULT_LIBC"
- #endif /* DEFAULT_LIBC */
-@@ -81,24 +87,100 @@ see the files COPYING3 and COPYING.RUNTI
- #define BIONIC_DYNAMIC_LINKER32 "/system/bin/linker"
- #define BIONIC_DYNAMIC_LINKER64 "/system/bin/linker64"
- #define BIONIC_DYNAMIC_LINKERX32 "/system/bin/linkerx32"
-+/* Should be redefined for each target that supports musl. */
-+#define MUSL_DYNAMIC_LINKER "/dev/null"
-+#define MUSL_DYNAMIC_LINKER32 "/dev/null"
-+#define MUSL_DYNAMIC_LINKER64 "/dev/null"
-+#define MUSL_DYNAMIC_LINKERX32 "/dev/null"
-
- #define GNU_USER_DYNAMIC_LINKER \
- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
-- BIONIC_DYNAMIC_LINKER)
-+ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
- #define GNU_USER_DYNAMIC_LINKER32 \
- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
-- BIONIC_DYNAMIC_LINKER32)
-+ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
- #define GNU_USER_DYNAMIC_LINKER64 \
- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
-- BIONIC_DYNAMIC_LINKER64)
-+ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
- #define GNU_USER_DYNAMIC_LINKERX32 \
- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
-- BIONIC_DYNAMIC_LINKERX32)
-+ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
-
- /* Whether we have Bionic libc runtime */
- #undef TARGET_HAS_BIONIC
- #define TARGET_HAS_BIONIC (OPTION_BIONIC)
-
-+/* musl avoids problematic includes by rearranging the include directories.
-+ * Unfortunately, this is mostly duplicated from cppdefault.c */
-+#if DEFAULT_LIBC == LIBC_MUSL
-+#define INCLUDE_DEFAULTS_MUSL_GPP \
-+ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
-+ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
-+ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
-+ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
-+ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
-+ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
-+
-+#ifdef LOCAL_INCLUDE_DIR
-+#define INCLUDE_DEFAULTS_MUSL_LOCAL \
-+ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
-+ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
-+#else
-+#define INCLUDE_DEFAULTS_MUSL_LOCAL
-+#endif
-+
-+#ifdef PREFIX_INCLUDE_DIR
-+#define INCLUDE_DEFAULTS_MUSL_PREFIX \
-+ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
-+#else
-+#define INCLUDE_DEFAULTS_MUSL_PREFIX
-+#endif
-+
-+#ifdef CROSS_INCLUDE_DIR
-+#define INCLUDE_DEFAULTS_MUSL_CROSS \
-+ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
-+#else
-+#define INCLUDE_DEFAULTS_MUSL_CROSS
-+#endif
-+
-+#ifdef TOOL_INCLUDE_DIR
-+#define INCLUDE_DEFAULTS_MUSL_TOOL \
-+ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
-+#else
-+#define INCLUDE_DEFAULTS_MUSL_TOOL
-+#endif
-+
-+#ifdef NATIVE_SYSTEM_HEADER_DIR
-+#define INCLUDE_DEFAULTS_MUSL_NATIVE \
-+ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
-+ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
-+#else
-+#define INCLUDE_DEFAULTS_MUSL_NATIVE
-+#endif
-+
-+#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
-+# undef INCLUDE_DEFAULTS_MUSL_LOCAL
-+# define INCLUDE_DEFAULTS_MUSL_LOCAL
-+# undef INCLUDE_DEFAULTS_MUSL_NATIVE
-+# define INCLUDE_DEFAULTS_MUSL_NATIVE
-+#else
-+# undef INCLUDE_DEFAULTS_MUSL_CROSS
-+# define INCLUDE_DEFAULTS_MUSL_CROSS
-+#endif
-+
-+#undef INCLUDE_DEFAULTS
-+#define INCLUDE_DEFAULTS \
-+ { \
-+ INCLUDE_DEFAULTS_MUSL_GPP \
-+ INCLUDE_DEFAULTS_MUSL_PREFIX \
-+ INCLUDE_DEFAULTS_MUSL_CROSS \
-+ INCLUDE_DEFAULTS_MUSL_TOOL \
-+ INCLUDE_DEFAULTS_MUSL_NATIVE \
-+ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
-+ { 0, 0, 0, 0, 0, 0 } \
-+ }
-+#endif
-+
- #if (DEFAULT_LIBC == LIBC_UCLIBC) && defined (SINGLE_LIBC) /* uClinux */
- /* This is a *uclinux* target. We don't define below macros to normal linux
- versions, because doing so would require *uclinux* targets to include
---- a/gcc/config/linux.opt
-+++ b/gcc/config/linux.opt
-@@ -28,5 +28,9 @@ Target Report RejectNegative Var(linux_l
- Use GNU C library
-
- muclibc
--Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
-+Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mmusl)
- Use uClibc C library
-+
-+mmusl
-+Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mbionic)
-+Use musl C library
---- a/gcc/configure
-+++ b/gcc/configure
-@@ -27742,6 +27742,9 @@ if test "${gcc_cv_libc_provides_ssp+set}
- else
- gcc_cv_libc_provides_ssp=no
- case "$target" in
-+ *-*-musl*)
-+ # All versions of musl provide stack protector
-+ gcc_cv_libc_provides_ssp=yes;;
- *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
- # glibc 2.4 and later provides __stack_chk_fail and
- # either __stack_chk_guard, or TLS access to stack guard canary.
-@@ -27774,6 +27777,7 @@ fi
- # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
- # simply assert that glibc does provide this, which is true for all
- # realistically usable GNU/Hurd configurations.
-+ # All supported versions of musl provide it as well
- gcc_cv_libc_provides_ssp=yes;;
- *-*-darwin* | *-*-freebsd*)
- ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
-@@ -27870,6 +27874,9 @@ case "$target" in
- gcc_cv_target_dl_iterate_phdr=no
- fi
- ;;
-+ *-linux-musl*)
-+ gcc_cv_target_dl_iterate_phdr=yes
-+ ;;
- esac
-
- if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
---- a/gcc/configure.ac
-+++ b/gcc/configure.ac
-@@ -5229,6 +5229,9 @@ AC_CACHE_CHECK(__stack_chk_fail in targe
- gcc_cv_libc_provides_ssp,
- [gcc_cv_libc_provides_ssp=no
- case "$target" in
-+ *-*-musl*)
-+ # All versions of musl provide stack protector
-+ gcc_cv_libc_provides_ssp=yes;;
- *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
- # glibc 2.4 and later provides __stack_chk_fail and
- # either __stack_chk_guard, or TLS access to stack guard canary.
-@@ -5255,6 +5258,7 @@ AC_CACHE_CHECK(__stack_chk_fail in targe
- # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
- # simply assert that glibc does provide this, which is true for all
- # realistically usable GNU/Hurd configurations.
-+ # All supported versions of musl provide it as well
- gcc_cv_libc_provides_ssp=yes;;
- *-*-darwin* | *-*-freebsd*)
- AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
-@@ -5328,6 +5332,9 @@ case "$target" in
- gcc_cv_target_dl_iterate_phdr=no
- fi
- ;;
-+ *-linux-musl*)
-+ gcc_cv_target_dl_iterate_phdr=yes
-+ ;;
- esac
- GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
- if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
---- a/gcc/doc/invoke.texi
-+++ b/gcc/doc/invoke.texi
-@@ -667,7 +667,7 @@ Objective-C and Objective-C++ Dialects}.
- -mcpu=@var{cpu}}
-
- @emph{GNU/Linux Options}
--@gccoptlist{-mglibc -muclibc -mbionic -mandroid @gol
-+@gccoptlist{-mglibc -muclibc -mmusl -mbionic -mandroid @gol
- -tno-android-cc -tno-android-ld}
-
- @emph{H8/300 Options}
-@@ -15324,13 +15324,19 @@ These @samp{-m} options are defined for
- @item -mglibc
- @opindex mglibc
- Use the GNU C library. This is the default except
--on @samp{*-*-linux-*uclibc*} and @samp{*-*-linux-*android*} targets.
-+on @samp{*-*-linux-*uclibc*}, @samp{*-*-linux-*musl*} and
-+@samp{*-*-linux-*android*} targets.
-
- @item -muclibc
- @opindex muclibc
- Use uClibc C library. This is the default on
- @samp{*-*-linux-*uclibc*} targets.
-
-+@item -mmusl
-+@opindex mmusl
-+Use the musl C library. This is the default on
-+@samp{*-*-linux-*musl*} targets.
-+
- @item -mbionic
- @opindex mbionic
- Use Bionic C library. This is the default on
projects / openwrt.git / blobdiff