diff options
Diffstat (limited to 'etc/patches/gcc-4.7.4/musl-support/0003-musl-libc-config.patch')
| -rw-r--r-- | etc/patches/gcc-4.7.4/musl-support/0003-musl-libc-config.patch | 330 |
1 files changed, 330 insertions, 0 deletions
diff --git a/etc/patches/gcc-4.7.4/musl-support/0003-musl-libc-config.patch b/etc/patches/gcc-4.7.4/musl-support/0003-musl-libc-config.patch new file mode 100644 index 0000000..fc3d5b0 --- /dev/null +++ b/etc/patches/gcc-4.7.4/musl-support/0003-musl-libc-config.patch @@ -0,0 +1,330 @@ +From 2568562d330c29bf2b487a85677cd319d78630bf Mon Sep 17 00:00:00 2001 +From: Oliver Reiche <oliver.reiche@huawei.com> +Date: Thu, 29 Jun 2023 16:52:26 +0200 +Subject: [PATCH 3/7] musl libc config + +Backport from GCC 6.1.0 + Git commit: 755658a56b57beca14b5fb70afdf1e588a058f7f + Subversion revision: r222904 + +Original description: + * 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. + +Co-authored-by: Szabolcs Nagy <szabolcs.nagy@arm.com> +Co-authored-by: Gregor Richards <gregor.richards@uwaterloo.ca> +--- + gcc/config.gcc | 5 +- + gcc/config/linux.h | 110 +++++++++++++++++++++++++++++++++++++------ + gcc/config/linux.opt | 6 ++- + gcc/configure | 7 +++ + gcc/configure.ac | 7 +++ + gcc/doc/invoke.texi | 10 +++- + 6 files changed, 127 insertions(+), 18 deletions(-) + +diff --git a/gcc/config.gcc b/gcc/config.gcc +index 9503b96cf..96ddb1a92 100644 +--- a/gcc/config.gcc ++++ b/gcc/config.gcc +@@ -522,7 +522,7 @@ 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" + + # Common parts for widely ported systems. + case ${target} in +@@ -625,6 +625,9 @@ 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" + ;; +diff --git a/gcc/config/linux.h b/gcc/config/linux.h +index fb459e680..064c6067d 100644 +--- a/gcc/config/linux.h ++++ b/gcc/config/linux.h +@@ -33,10 +33,12 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see + #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() \ +@@ -51,21 +53,25 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see + } 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 */ +@@ -82,19 +88,24 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see + #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) + + /* Determine whether the entire c99 runtime + is present in the runtime library. */ +@@ -108,3 +119,74 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see + /* 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 +diff --git a/gcc/config/linux.opt b/gcc/config/linux.opt +index ba6b9f83e..f5e94a9b1 100644 +--- a/gcc/config/linux.opt ++++ b/gcc/config/linux.opt +@@ -28,5 +28,9 @@ Target Report RejectNegative Var(linux_libc,LIBC_GLIBC) Negative(muclibc) + 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 +diff --git a/gcc/configure b/gcc/configure +index 0d8c5e71d..695e7c415 100755 +--- a/gcc/configure ++++ b/gcc/configure +@@ -26791,6 +26791,9 @@ if test "${gcc_cv_libc_provides_ssp+set}" = set; then : + else + gcc_cv_libc_provides_ssp=no + case "$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. +@@ -26824,6 +26827,7 @@ else + # <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 "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail" +@@ -26906,6 +26910,9 @@ case "$target" in + gcc_cv_target_dl_iterate_phdr=no + fi + ;; ++ *-linux-musl*) ++ gcc_cv_target_dl_iterate_phdr=yes ++ ;; + esac + + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then +diff --git a/gcc/configure.ac b/gcc/configure.ac +index a78a1d76d..b6425efb4 100644 +--- a/gcc/configure.ac ++++ b/gcc/configure.ac +@@ -4669,6 +4669,9 @@ AC_CACHE_CHECK(__stack_chk_fail in target C library, + gcc_cv_libc_provides_ssp, + [gcc_cv_libc_provides_ssp=no + case "$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. +@@ -4702,6 +4705,7 @@ AC_CACHE_CHECK(__stack_chk_fail in target C library, + # <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], +@@ -4767,6 +4771,9 @@ 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 +diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi +index 625fef25a..159615fe4 100644 +--- a/gcc/doc/invoke.texi ++++ b/gcc/doc/invoke.texi +@@ -595,7 +595,7 @@ 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} +@@ -12879,13 +12879,19 @@ These @samp{-m} options are defined for GNU/Linux targets: + @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 +-- +2.30.2 + |