Add musl support to gcc This patch comes from the musl-cross project at https://bitbucket.org/GregorR/musl-cross/src. Compared to the upstream version: * the config.sub modifications have been removed, because Buildroot already overwrites all config.sub with a more recent config.sub that has musl support. * change to ensure that a dummy dynamic linker path MUSL_DYNAMIC_LINKER is defined for all architectures, otherwise building gcc for architectures not supported by musl was causing build failure. Bug reported upstream at https://bitbucket.org/GregorR/musl-gcc-patches/issue/4/musl-gcc-patches-break-the-build-on. * change the USE_PT_GNU_EH_FRAME logic to keep the existing gcc logic and only add the musl one as an addition, not as a replacement. Not doing this breaks C++ exception handling with glibc, because USE_PT_GNU_EH_FRAME doesn't get defined due to the configure script not testing dl_iterate_phdr() on any system except Solaris. Signed-off-by: Thomas Petazzoni --- # HG changeset patch # Parent f50bb54f331f73405131a30b4f353cfda1c70304 Use the generic implementation of libstdc++ primitives when we're on musl, not the glibc one. Index: b/libstdc++-v3/configure.host =================================================================== --- a/libstdc++-v3/configure.host +++ b/libstdc++-v3/configure.host @@ -243,6 +243,13 @@ os_include_dir="os/bsd/freebsd" ;; gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu) + # check for musl by target + case "${host_os}" in + *-musl*) + os_include_dir="os/generic" + ;; + *) + if [ "$uclibc" = "yes" ]; then os_include_dir="os/uclibc" elif [ "$bionic" = "yes" ]; then @@ -251,6 +258,9 @@ os_include_dir="os/gnu-linux" fi ;; + + esac + ;; hpux*) os_include_dir="os/hpux" ;; Index: b/gcc/config.gcc =================================================================== --- a/gcc/config.gcc +++ b/gcc/config.gcc @@ -522,7 +522,7 @@ esac # Common C libraries. -tm_defines="$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 ${target} in @@ -625,6 +625,9 @@ *-*-*uclibc*) tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC" ;; + *-*-*musl*) + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL" + ;; *) tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC" ;; @@ -2091,6 +2094,10 @@ powerpc*-*-linux*paired*) tm_file="${tm_file} rs6000/750cl.h" ;; esac + case ${target} in + *-linux*-musl*) + enable_secureplt=yes ;; + esac if test x${enable_secureplt} = xyes; then tm_file="rs6000/secureplt.h ${tm_file}" fi Index: b/gcc/config/linux.h =================================================================== --- a/gcc/config/linux.h +++ b/gcc/config/linux.h @@ -33,10 +33,12 @@ #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() \ @@ -54,18 +56,21 @@ uClibc or Bionic is the default C library and whether -muclibc or -mglibc or -mbionic 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 */ @@ -83,23 +88,32 @@ #define BIONIC_DYNAMIC_LINKER64 "/system/bin/linker64" #define BIONIC_DYNAMIC_LINKERX32 "/system/bin/linkerx32" +/* Musl dynamic linker paths must be defined on a per-architecture + basis, for each architecture supported by Musl. However, in order + to let other architectures continue to build with other C + libraries, we provide a dummy definition of the following defines. */ +#define MUSL_DYNAMIC_LINKER "invalid" +#define MUSL_DYNAMIC_LINKER32 "invalid" +#define MUSL_DYNAMIC_LINKER64 "invalid" +#define MUSL_DYNAMIC_LINKERX32 "invalid" + #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. */ #undef TARGET_C99_FUNCTIONS -#define TARGET_C99_FUNCTIONS (OPTION_GLIBC) +#define TARGET_C99_FUNCTIONS (OPTION_GLIBC || OPTION_MUSL) /* Whether we have sincos that follows the GNU extension. */ #undef TARGET_HAS_SINCOS @@ -108,3 +122,74 @@ /* 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 Index: b/gcc/config/linux.opt =================================================================== --- a/gcc/config/linux.opt +++ b/gcc/config/linux.opt @@ -30,3 +30,7 @@ muclibc Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic) Use uClibc C library + +mmusl +Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc) +Use musl C library Index: b/gcc/ginclude/stddef.h =================================================================== --- a/gcc/ginclude/stddef.h +++ b/gcc/ginclude/stddef.h @@ -184,6 +184,7 @@ #ifndef _GCC_SIZE_T #ifndef _SIZET_ #ifndef __size_t +#ifndef __DEFINED_size_t /* musl */ #define __size_t__ /* BeOS */ #define __SIZE_T__ /* Cray Unicos/Mk */ #define _SIZE_T @@ -200,6 +201,7 @@ #define ___int_size_t_h #define _GCC_SIZE_T #define _SIZET_ +#define __DEFINED_size_t /* musl */ #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \ || defined(__FreeBSD_kernel__) /* __size_t is a typedef on FreeBSD 5, must not trash it. */ @@ -215,6 +217,7 @@ typedef long ssize_t; #endif /* __BEOS__ */ #endif /* !(defined (__GNUG__) && defined (size_t)) */ +#endif /* __DEFINED_size_t */ #endif /* __size_t */ #endif /* _SIZET_ */ #endif /* _GCC_SIZE_T */ Index: b/libgomp/config/posix/time.c =================================================================== --- a/libgomp/config/posix/time.c +++ b/libgomp/config/posix/time.c @@ -28,6 +28,8 @@ The following implementation uses the most simple POSIX routines. If present, POSIX 4 clocks should be used instead. */ +#define _POSIX_C_SOURCE 199309L /* for clocks */ + #include "libgomp.h" #include #if TIME_WITH_SYS_TIME Index: b/libgcc/unwind-dw2-fde-dip.c =================================================================== --- a/libgcc/unwind-dw2-fde-dip.c +++ b/libgcc/unwind-dw2-fde-dip.c @@ -71,6 +71,13 @@ # define USE_PT_GNU_EH_FRAME #endif +/* For musl libc, TARGET_DL_ITERATE_PHDR gets defined by the configure + script. */ +#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \ + && defined(TARGET_DL_ITERATE_PHDR) +# define USE_PT_GNU_EH_FRAME +#endif + #if defined(USE_PT_GNU_EH_FRAME) #include Index: b/gcc/configure =================================================================== --- a/gcc/configure +++ b/gcc/configure @@ -26791,6 +26791,9 @@ 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 @@ # ) 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 "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail" @@ -26906,6 +26910,9 @@ gcc_cv_target_dl_iterate_phdr=no fi ;; + *-linux-musl*) + gcc_cv_target_dl_iterate_phdr=yes + ;; esac if test x$gcc_cv_target_dl_iterate_phdr = xyes; then Index: b/gcc/configure.ac =================================================================== --- a/gcc/configure.ac +++ b/gcc/configure.ac @@ -4669,6 +4669,9 @@ gcc_cv_libc_provides_ssp, [gcc_cv_libc_provides_ssp=no case "$target" in + *-*-musl*) + # All versions of musl provide stack protector + gcc_cv_libc_provides_ssp=yes;; *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu) [# glibc 2.4 and later provides __stack_chk_fail and # either __stack_chk_guard, or TLS access to stack guard canary. @@ -4702,6 +4705,7 @@ # ) and for now # simply assert that glibc does provide this, which is true for all # realistically usable GNU/Hurd configurations. + # All supported versions of musl provide it as well gcc_cv_libc_provides_ssp=yes;; *-*-darwin* | *-*-freebsd*) AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes], @@ -4767,6 +4771,9 @@ gcc_cv_target_dl_iterate_phdr=no fi ;; + *-linux-musl*) + gcc_cv_target_dl_iterate_phdr=yes + ;; esac GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR]) if test x$gcc_cv_target_dl_iterate_phdr = xyes; then Index: b/fixincludes/mkfixinc.sh =================================================================== --- a/fixincludes/mkfixinc.sh +++ b/fixincludes/mkfixinc.sh @@ -20,7 +20,8 @@ powerpc-*-eabi* | \ powerpc-*-rtems* | \ powerpcle-*-eabisim* | \ - powerpcle-*-eabi* ) + powerpcle-*-eabi* | \ + *-musl* ) # IF there is no include fixing, # THEN create a no-op fixer and exit (echo "#! /bin/sh" ; echo "exit 0" ) > ${target} Index: b/gcc/config/i386/linux.h =================================================================== --- a/gcc/config/i386/linux.h +++ b/gcc/config/i386/linux.h @@ -22,3 +22,5 @@ #define GNU_USER_LINK_EMULATION "elf_i386" #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2" +#undef MUSL_DYNAMIC_LINKER +#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1" Index: b/gcc/config/i386/linux64.h =================================================================== --- a/gcc/config/i386/linux64.h +++ b/gcc/config/i386/linux64.h @@ -31,3 +31,10 @@ #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2" #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2" #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2" + +#undef MUSL_DYNAMIC_LINKER32 +#undef MUSL_DYNAMIC_LINKER64 +#undef MUSL_DYNAMIC_LINKERX32 +#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1" +#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1" +#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1" Index: b/libitm/config/linux/x86/tls.h =================================================================== --- a/libitm/config/linux/x86/tls.h +++ b/libitm/config/linux/x86/tls.h @@ -25,16 +25,19 @@ #ifndef LIBITM_X86_TLS_H #define LIBITM_X86_TLS_H 1 -#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10) +#if defined(__GLIBC_PREREQ) +#if __GLIBC_PREREQ(2, 10) /* Use slots in the TCB head rather than __thread lookups. GLIBC has reserved words 10 through 13 for TM. */ #define HAVE_ARCH_GTM_THREAD 1 #define HAVE_ARCH_GTM_THREAD_DISP 1 #endif +#endif #include "config/generic/tls.h" -#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10) +#if defined(__GLIBC_PREREQ) +#if __GLIBC_PREREQ(2, 10) namespace GTM HIDDEN { #ifdef __x86_64__ @@ -101,5 +104,6 @@ } // namespace GTM #endif /* >= GLIBC 2.10 */ +#endif #endif // LIBITM_X86_TLS_H Index: b/gcc/config/arm/linux-eabi.h =================================================================== --- a/gcc/config/arm/linux-eabi.h +++ b/gcc/config/arm/linux-eabi.h @@ -64,6 +64,23 @@ #undef GLIBC_DYNAMIC_LINKER #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.3" +/* For ARM musl currently supports four dynamic linkers: + - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI + - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI + - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB + - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB + musl does not support the legacy OABI mode. + All the dynamic linkers live in /lib. + We default to soft-float, EL. */ +#undef MUSL_DYNAMIC_LINKER +#if TARGET_BIG_ENDIAN_DEFAULT +#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}" +#else +#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}" +#endif +#define MUSL_DYNAMIC_LINKER \ + "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1" + /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to use the GNU/Linux version, not the generic BPABI version. */ #undef LINK_SPEC Index: b/libitm/config/arm/hwcap.cc =================================================================== --- a/libitm/config/arm/hwcap.cc +++ b/libitm/config/arm/hwcap.cc @@ -40,7 +40,11 @@ #ifdef __linux__ #include +#ifdef __GLIBC__ #include +#else +#include +#endif #include static void __attribute__((constructor)) Index: b/gcc/config/mips/linux.h =================================================================== --- a/gcc/config/mips/linux.h +++ b/gcc/config/mips/linux.h @@ -19,3 +19,11 @@ . */ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1" + +#if TARGET_ENDIAN_DEFAULT == 0 /* LE */ +#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}" +#else +#define MUSL_DYNAMIC_LINKER_E "%{EL:el}" +#endif +#undef MUSL_DYNAMIC_LINKER +#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips" MUSL_DYNAMIC_LINKER_E ".so.1" Index: b/gcc/config/rs6000/linux64.h =================================================================== --- a/gcc/config/rs6000/linux64.h +++ b/gcc/config/rs6000/linux64.h @@ -362,17 +362,23 @@ #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld64.so.1" #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0" #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0" +#undef MUSL_DYNAMIC_LINKER32 +#undef MUSL_DYNAMIC_LINKER64 +#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1" +#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1" #if DEFAULT_LIBC == LIBC_UCLIBC -#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}" +#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}" #elif DEFAULT_LIBC == LIBC_GLIBC -#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}" +#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}" +#elif DEFAULT_LIBC == LIBC_MUSL +#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}" #else #error "Unsupported DEFAULT_LIBC" #endif #define GNU_USER_DYNAMIC_LINKER32 \ - CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32) + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32) #define GNU_USER_DYNAMIC_LINKER64 \ - CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64) + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64) #define LINK_OS_LINUX_SPEC32 "-m elf32ppclinux %{!shared: %{!static: \ Index: b/gcc/config/rs6000/secureplt.h =================================================================== --- a/gcc/config/rs6000/secureplt.h +++ b/gcc/config/rs6000/secureplt.h @@ -18,3 +18,4 @@ . */ #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt" +#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt" Index: b/gcc/config/rs6000/sysv4.h =================================================================== --- a/gcc/config/rs6000/sysv4.h +++ b/gcc/config/rs6000/sysv4.h @@ -566,6 +566,9 @@ #ifndef CC1_SECURE_PLT_DEFAULT_SPEC #define CC1_SECURE_PLT_DEFAULT_SPEC "" #endif +#ifndef LINK_SECURE_PLT_DEFAULT_SPEC +#define LINK_SECURE_PLT_DEFAULT_SPEC "" +#endif /* Pass -G xxx to the compiler and set correct endian mode. */ #define CC1_SPEC "%{G*} %(cc1_cpu) \ @@ -626,7 +629,8 @@ %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \ %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \ %{mcall-i960-old: --oformat elf32-powerpcle} \ - }}}}" + }}}} \ +%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}" /* Any specific OS flags. */ #define LINK_OS_SPEC "\ @@ -804,15 +808,19 @@ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1" #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0" +#undef MUSL_DYNAMIC_LINKER +#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1" #if DEFAULT_LIBC == LIBC_UCLIBC -#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}" +#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}" +#elif DEFAULT_LIBC == LIBC_MUSL +#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}" #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC -#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}" +#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}" #else #error "Unsupported DEFAULT_LIBC" #endif #define GNU_USER_DYNAMIC_LINKER \ - CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER) + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER) #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \ %{rdynamic:-export-dynamic} \ @@ -938,6 +946,7 @@ { "cc1_endian_little", CC1_ENDIAN_LITTLE_SPEC }, \ { "cc1_endian_default", CC1_ENDIAN_DEFAULT_SPEC }, \ { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \ + { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \ { "cpp_os_ads", CPP_OS_ADS_SPEC }, \ { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \ { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \ Index: b/gcc/config/mips/linux64.h =================================================================== --- a/gcc/config/mips/linux64.h +++ b/gcc/config/mips/linux64.h @@ -30,4 +30,4 @@ #define BIONIC_DYNAMIC_LINKERN32 "/system/bin/linker32" #define GNU_USER_DYNAMIC_LINKERN32 \ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERN32, UCLIBC_DYNAMIC_LINKERN32, \ - BIONIC_DYNAMIC_LINKERN32) + BIONIC_DYNAMIC_LINKERN32, MUSL_DYNAMIC_LINKER)