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gh-95855: Refactor platform triplet detection code, add detection for…
… MIPS soft float and musl libc (#107221) - Move platform triplet detection code into Misc/platform_triplet.c - Refactor MIPS detection, use defined(__mips64) to detect MIPS64 - Compute libc values in separate section - Add detection for MIPS soft float - Add detection for musl musl supports SPE with its soft-float ABI: https://git.musl-libc.org/cgit/musl/commit/?id=7be59733d71ada3a32a98622507399253f1d5e48 Original patch by Christian Heimes. Co-authored-by: Christian Heimes <[email protected]> Co-authored-by: Erlend E. Aasland <[email protected]>
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Misc/NEWS.d/next/Build/2023-07-25-02-30-00.gh-issue-95855.wA7rAf.rst
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,2 @@ | ||
| Refactor platform triplet detection code and add detection for MIPS soft | ||
| float and musl libc. |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,255 @@ | ||
| /* Detect platform triplet from builtin defines | ||
| * cc -E Misc/platform_triplet.c | grep '^PLATFORM_TRIPLET=' | tr -d ' ' | ||
| */ | ||
| #undef bfin | ||
| #undef cris | ||
| #undef fr30 | ||
| #undef linux | ||
| #undef hppa | ||
| #undef hpux | ||
| #undef i386 | ||
| #undef mips | ||
| #undef powerpc | ||
| #undef sparc | ||
| #undef unix | ||
| #if defined(__ANDROID__) | ||
| # Android is not a multiarch system. | ||
| #elif defined(__linux__) | ||
| /* | ||
| * BEGIN of Linux block | ||
| */ | ||
| // Detect libc (based on config.guess) | ||
| # include <features.h> | ||
| # if defined(__UCLIBC__) | ||
| # error uclibc not supported | ||
| # elif defined(__dietlibc__) | ||
| # error dietlibc not supported | ||
| # elif defined(__GLIBC__) | ||
| # define LIBC gnu | ||
| # define LIBC_X32 gnux32 | ||
| # if defined(__ARM_PCS_VFP) | ||
| # define LIBC_ARM gnueabihf | ||
| # else | ||
| # define LIBC_ARM gnueabi | ||
| # endif | ||
| # if defined(__loongarch__) | ||
| # if defined(__loongarch_soft_float) | ||
| # define LIBC_LA gnusf | ||
| # elif defined(__loongarch_single_float) | ||
| # define LIBC_LA gnuf32 | ||
| # elif defined(__loongarch_double_float) | ||
| # define LIBC_LA gnu | ||
| # else | ||
| # error unknown loongarch floating-point base abi | ||
| # endif | ||
| # endif | ||
| # if defined(_MIPS_SIM) | ||
| # if defined(__mips_hard_float) | ||
| # if _MIPS_SIM == _ABIO32 | ||
| # define LIBC_MIPS gnu | ||
| # elif _MIPS_SIM == _ABIN32 | ||
| # define LIBC_MIPS gnuabin32 | ||
| # elif _MIPS_SIM == _ABI64 | ||
| # define LIBC_MIPS gnuabi64 | ||
| # else | ||
| # error unknown mips sim value | ||
| # endif | ||
| # else | ||
| # if _MIPS_SIM == _ABIO32 | ||
| # define LIBC_MIPS gnusf | ||
| # elif _MIPS_SIM == _ABIN32 | ||
| # define LIBC_MIPS gnuabin32sf | ||
| # elif _MIPS_SIM == _ABI64 | ||
| # define LIBC_MIPS gnuabi64sf | ||
| # else | ||
| # error unknown mips sim value | ||
| # endif | ||
| # endif | ||
| # endif | ||
| # if defined(__SPE__) | ||
| # define LIBC_PPC gnuspe | ||
| # else | ||
| # define LIBC_PPC gnu | ||
| # endif | ||
| # else | ||
| // Heuristic to detect musl libc | ||
| # include <stdarg.h> | ||
| # ifdef __DEFINED_va_list | ||
| # define LIBC musl | ||
| # define LIBC_X32 muslx32 | ||
| # if defined(__ARM_PCS_VFP) | ||
| # define LIBC_ARM musleabihf | ||
| # else | ||
| # define LIBC_ARM musleabi | ||
| # endif | ||
| # if defined(__loongarch__) | ||
| # if defined(__loongarch_soft_float) | ||
| # define LIBC_LA muslsf | ||
| # elif defined(__loongarch_single_float) | ||
| # define LIBC_LA muslf32 | ||
| # elif defined(__loongarch_double_float) | ||
| # define LIBC_LA musl | ||
| # else | ||
| # error unknown loongarch floating-point base abi | ||
| # endif | ||
| # endif | ||
| # if defined(_MIPS_SIM) | ||
| # if defined(__mips_hard_float) | ||
| # if _MIPS_SIM == _ABIO32 | ||
| # define LIBC_MIPS musl | ||
| # elif _MIPS_SIM == _ABIN32 | ||
| # define LIBC_MIPS musln32 | ||
| # elif _MIPS_SIM == _ABI64 | ||
| # define LIBC_MIPS musl | ||
| # else | ||
| # error unknown mips sim value | ||
| # endif | ||
| # else | ||
| # if _MIPS_SIM == _ABIO32 | ||
| # define LIBC_MIPS muslsf | ||
| # elif _MIPS_SIM == _ABIN32 | ||
| # define LIBC_MIPS musln32sf | ||
| # elif _MIPS_SIM == _ABI64 | ||
| # define LIBC_MIPS muslsf | ||
| # else | ||
| # error unknown mips sim value | ||
| # endif | ||
| # endif | ||
| # endif | ||
| # if defined(_SOFT_FLOAT) || defined(__NO_FPRS__) | ||
| # define LIBC_PPC muslsf | ||
| # else | ||
| # define LIBC_PPC musl | ||
| # endif | ||
| # else | ||
| # error unknown libc | ||
| # endif | ||
| # endif | ||
|
|
||
| # if defined(__x86_64__) && defined(__LP64__) | ||
| PLATFORM_TRIPLET=x86_64-linux-LIBC | ||
| # elif defined(__x86_64__) && defined(__ILP32__) | ||
| PLATFORM_TRIPLET=x86_64-linux-LIBC_X32 | ||
| # elif defined(__i386__) | ||
| PLATFORM_TRIPLET=i386-linux-LIBC | ||
| # elif defined(__aarch64__) && defined(__AARCH64EL__) | ||
| # if defined(__ILP32__) | ||
| PLATFORM_TRIPLET=aarch64_ilp32-linux-LIBC | ||
| # else | ||
| PLATFORM_TRIPLET=aarch64-linux-LIBC | ||
| # endif | ||
| # elif defined(__aarch64__) && defined(__AARCH64EB__) | ||
| # if defined(__ILP32__) | ||
| PLATFORM_TRIPLET=aarch64_be_ilp32-linux-LIBC | ||
| # else | ||
| PLATFORM_TRIPLET=aarch64_be-linux-LIBC | ||
| # endif | ||
| # elif defined(__alpha__) | ||
| PLATFORM_TRIPLET=alpha-linux-LIBC | ||
| # elif defined(__ARM_EABI__) | ||
| # if defined(__ARMEL__) | ||
| PLATFORM_TRIPLET=arm-linux-LIBC_ARM | ||
| # else | ||
| PLATFORM_TRIPLET=armeb-linux-LIBC_ARM | ||
| # endif | ||
| # elif defined(__hppa__) | ||
| PLATFORM_TRIPLET=hppa-linux-LIBC | ||
| # elif defined(__ia64__) | ||
| PLATFORM_TRIPLET=ia64-linux-LIBC | ||
| # elif defined(__loongarch__) && defined(__loongarch_lp64) | ||
| PLATFORM_TRIPLET=loongarch64-linux-LIBC_LA | ||
| # elif defined(__m68k__) && !defined(__mcoldfire__) | ||
| PLATFORM_TRIPLET=m68k-linux-LIBC | ||
| # elif defined(__mips__) | ||
| # if defined(__mips_isa_rev) && (__mips_isa_rev >=6) | ||
| # if defined(_MIPSEL) && defined(__mips64) | ||
| PLATFORM_TRIPLET=mipsisa64r6el-linux-LIBC_MIPS | ||
| # elif defined(_MIPSEL) | ||
| PLATFORM_TRIPLET=mipsisa32r6el-linux-LIBC_MIPS | ||
| # elif defined(__mips64) | ||
| PLATFORM_TRIPLET=mipsisa64r6-linux-LIBC_MIPS | ||
| # else | ||
| PLATFORM_TRIPLET=mipsisa32r6-linux-LIBC_MIPS | ||
| # endif | ||
| # else | ||
| # if defined(_MIPSEL) && defined(__mips64) | ||
| PLATFORM_TRIPLET=mips64el-linux-LIBC_MIPS | ||
| # elif defined(_MIPSEL) | ||
| PLATFORM_TRIPLET=mipsel-linux-LIBC_MIPS | ||
| # elif defined(__mips64) | ||
| PLATFORM_TRIPLET=mips64-linux-LIBC_MIPS | ||
| # else | ||
| PLATFORM_TRIPLET=mips-linux-LIBC_MIPS | ||
| # endif | ||
| # endif | ||
| # elif defined(__or1k__) | ||
| PLATFORM_TRIPLET=or1k-linux-LIBC | ||
| # elif defined(__powerpc64__) | ||
| # if defined(__LITTLE_ENDIAN__) | ||
| PLATFORM_TRIPLET=powerpc64le-linux-LIBC | ||
| # else | ||
| PLATFORM_TRIPLET=powerpc64-linux-LIBC | ||
| # endif | ||
| # elif defined(__powerpc__) | ||
| PLATFORM_TRIPLET=powerpc-linux-LIBC_PPC | ||
| # elif defined(__s390x__) | ||
| PLATFORM_TRIPLET=s390x-linux-LIBC | ||
| # elif defined(__s390__) | ||
| PLATFORM_TRIPLET=s390-linux-LIBC | ||
| # elif defined(__sh__) && defined(__LITTLE_ENDIAN__) | ||
| PLATFORM_TRIPLET=sh4-linux-LIBC | ||
| # elif defined(__sparc__) && defined(__arch64__) | ||
| PLATFORM_TRIPLET=sparc64-linux-LIBC | ||
| # elif defined(__sparc__) | ||
| PLATFORM_TRIPLET=sparc-linux-LIBC | ||
| # elif defined(__riscv) | ||
| # if __riscv_xlen == 32 | ||
| PLATFORM_TRIPLET=riscv32-linux-LIBC | ||
| # elif __riscv_xlen == 64 | ||
| PLATFORM_TRIPLET=riscv64-linux-LIBC | ||
| # else | ||
| # error unknown platform triplet | ||
| # endif | ||
| # else | ||
| # error unknown platform triplet | ||
| # endif | ||
| /* | ||
| * END of Linux block | ||
| */ | ||
| #elif defined(__FreeBSD_kernel__) | ||
| # if defined(__LP64__) | ||
| PLATFORM_TRIPLET=x86_64-kfreebsd-gnu | ||
| # elif defined(__i386__) | ||
| PLATFORM_TRIPLET=i386-kfreebsd-gnu | ||
| # else | ||
| # error unknown platform triplet | ||
| # endif | ||
| #elif defined(__gnu_hurd__) | ||
| PLATFORM_TRIPLET=i386-gnu | ||
| #elif defined(__APPLE__) | ||
| PLATFORM_TRIPLET=darwin | ||
| #elif defined(__VXWORKS__) | ||
| PLATFORM_TRIPLET=vxworks | ||
| #elif defined(__wasm32__) | ||
| # if defined(__EMSCRIPTEN__) | ||
| PLATFORM_TRIPLET=wasm32-emscripten | ||
| # elif defined(__wasi__) | ||
| # if defined(_REENTRANT) | ||
| PLATFORM_TRIPLET=wasm32-wasi-threads | ||
| # else | ||
| PLATFORM_TRIPLET=wasm32-wasi | ||
| # endif | ||
| # else | ||
| # error unknown wasm32 platform | ||
| # endif | ||
| #elif defined(__wasm64__) | ||
| # if defined(__EMSCRIPTEN__) | ||
| PLATFORM_TRIPLET=wasm64-emscripten | ||
| # elif defined(__wasi__) | ||
| PLATFORM_TRIPLET=wasm64-wasi | ||
| # else | ||
| # error unknown wasm64 platform | ||
| # endif | ||
| #else | ||
| # error unknown platform triplet | ||
| #endif |
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