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199 lines
7.1 KiB
199 lines
7.1 KiB
--- a/gcc/config.gcc
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+++ b/gcc/config.gcc
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@@ -594,7 +594,7 @@ case ${target} in
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esac
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# Common C libraries.
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-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
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+tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
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# 32-bit x86 processors supported by --with-arch=. Each processor
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# MUST be separated by exactly one space.
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@@ -719,6 +719,9 @@ case ${target} in
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*-*-*uclibc*)
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tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
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;;
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+ *-*-*musl*)
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+ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
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+ ;;
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*)
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tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
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;;
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--- a/gcc/config/linux.h
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+++ b/gcc/config/linux.h
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@@ -32,10 +32,12 @@ see the files COPYING3 and COPYING.RUNTI
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#define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
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#define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
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#define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
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+#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
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#else
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#define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
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#define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
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#define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
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+#define OPTION_MUSL (linux_libc == LIBC_MUSL)
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#endif
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#define GNU_USER_TARGET_OS_CPP_BUILTINS() \
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@@ -53,18 +55,21 @@ see the files COPYING3 and COPYING.RUNTI
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uClibc or Bionic is the default C library and whether
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-muclibc or -mglibc or -mbionic has been passed to change the default. */
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-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
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- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
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+#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
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+ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
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#if DEFAULT_LIBC == LIBC_GLIBC
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-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
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- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
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+#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
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+ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
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#elif DEFAULT_LIBC == LIBC_UCLIBC
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-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
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- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
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+#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
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+ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
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#elif DEFAULT_LIBC == LIBC_BIONIC
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-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
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- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
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+#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
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+ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
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+#elif DEFAULT_LIBC == LIBC_MUSL
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+#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
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+ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
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#else
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#error "Unsupported DEFAULT_LIBC"
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#endif /* DEFAULT_LIBC */
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@@ -84,21 +89,92 @@ see the files COPYING3 and COPYING.RUNTI
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#define GNU_USER_DYNAMIC_LINKER \
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CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
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- BIONIC_DYNAMIC_LINKER)
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+ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
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#define GNU_USER_DYNAMIC_LINKER32 \
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CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
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- BIONIC_DYNAMIC_LINKER32)
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+ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
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#define GNU_USER_DYNAMIC_LINKER64 \
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CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
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- BIONIC_DYNAMIC_LINKER64)
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+ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
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#define GNU_USER_DYNAMIC_LINKERX32 \
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CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
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- BIONIC_DYNAMIC_LINKERX32)
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+ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
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/* Whether we have Bionic libc runtime */
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#undef TARGET_HAS_BIONIC
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#define TARGET_HAS_BIONIC (OPTION_BIONIC)
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+/* musl avoids problematic includes by rearranging the include directories.
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+ * Unfortunately, this is mostly duplicated from cppdefault.c */
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+#if DEFAULT_LIBC == LIBC_MUSL
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+#define INCLUDE_DEFAULTS_MUSL_GPP \
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+ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
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+ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
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+ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
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+ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
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+ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
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+ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
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+
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+#ifdef LOCAL_INCLUDE_DIR
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+#define INCLUDE_DEFAULTS_MUSL_LOCAL \
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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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+#else
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+#define INCLUDE_DEFAULTS_MUSL_LOCAL
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+#endif
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+
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+#ifdef PREFIX_INCLUDE_DIR
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+#define INCLUDE_DEFAULTS_MUSL_PREFIX \
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+ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
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+#else
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+#define INCLUDE_DEFAULTS_MUSL_PREFIX
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+#endif
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+
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+#ifdef CROSS_INCLUDE_DIR
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+#define INCLUDE_DEFAULTS_MUSL_CROSS \
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+ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
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+#else
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+#define INCLUDE_DEFAULTS_MUSL_CROSS
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+#endif
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+
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+#ifdef TOOL_INCLUDE_DIR
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+#define INCLUDE_DEFAULTS_MUSL_TOOL \
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+ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
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+#else
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+#define INCLUDE_DEFAULTS_MUSL_TOOL
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+#endif
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+
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+#ifdef NATIVE_SYSTEM_HEADER_DIR
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+#define INCLUDE_DEFAULTS_MUSL_NATIVE \
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+ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
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+ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
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+#else
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+#define INCLUDE_DEFAULTS_MUSL_NATIVE
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+#endif
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+
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+#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
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+# undef INCLUDE_DEFAULTS_MUSL_LOCAL
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+# define INCLUDE_DEFAULTS_MUSL_LOCAL
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+# undef INCLUDE_DEFAULTS_MUSL_NATIVE
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+# define INCLUDE_DEFAULTS_MUSL_NATIVE
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+#else
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+# undef INCLUDE_DEFAULTS_MUSL_CROSS
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+# define INCLUDE_DEFAULTS_MUSL_CROSS
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+#endif
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+
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+#undef INCLUDE_DEFAULTS
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+#define INCLUDE_DEFAULTS \
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+ { \
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+ INCLUDE_DEFAULTS_MUSL_GPP \
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+ INCLUDE_DEFAULTS_MUSL_PREFIX \
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+ INCLUDE_DEFAULTS_MUSL_CROSS \
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+ INCLUDE_DEFAULTS_MUSL_TOOL \
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+ INCLUDE_DEFAULTS_MUSL_NATIVE \
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+ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
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+ { 0, 0, 0, 0, 0, 0 } \
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+ }
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+#endif
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+
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#if (DEFAULT_LIBC == LIBC_UCLIBC) && defined (SINGLE_LIBC) /* uClinux */
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/* This is a *uclinux* target. We don't define below macros to normal linux
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versions, because doing so would require *uclinux* targets to include
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--- a/gcc/config/linux.opt
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+++ b/gcc/config/linux.opt
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@@ -30,3 +30,7 @@ Use GNU C library
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muclibc
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Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
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Use uClibc C library
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+
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+mmusl
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+Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
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+Use musl C library
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--- a/gcc/ginclude/stddef.h
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+++ b/gcc/ginclude/stddef.h
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@@ -181,6 +181,7 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
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#ifndef _GCC_SIZE_T
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#ifndef _SIZET_
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#ifndef __size_t
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+#ifndef __DEFINED_size_t /* musl */
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#define __size_t__ /* BeOS */
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#define __SIZE_T__ /* Cray Unicos/Mk */
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#define _SIZE_T
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@@ -197,6 +198,7 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
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#define ___int_size_t_h
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#define _GCC_SIZE_T
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#define _SIZET_
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+#define __DEFINED_size_t /* musl */
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#if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
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|| defined(__FreeBSD_kernel__)
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/* __size_t is a typedef on FreeBSD 5, must not trash it. */
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@@ -214,6 +216,7 @@ typedef __SIZE_TYPE__ size_t;
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typedef long ssize_t;
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#endif /* __BEOS__ */
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#endif /* !(defined (__GNUG__) && defined (size_t)) */
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+#endif /* __DEFINED_size_t */
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#endif /* __size_t */
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#endif /* _SIZET_ */
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#endif /* _GCC_SIZE_T */
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