python311: fix cross to/from musl (#260641)

The situation:

Python <3.11: under Linux the abi string is always -gnu*

Python 3.11-3.12: musl is treated as its own abi in the python build system, but when cross-compiling the build host's libc is used for the target abi string. Cross compiling from glibc to musl gives a -gnu* target abi string and vice versa.

Python >=3.13: musl is treated as its own abi, and when cross-compiling the target libc is used for the target abi string

We backport the fix for python 3.11-3.12, since the intermediate state is almost impossible to model in the nix expression

Yureka ef60280d 108f00ea

Changed files
+299 -1
pkgs
development
interpreters
+4 -1
pkgs/development/interpreters/python/cpython/default.nix
···
./3.8/0001-On-all-posix-systems-not-just-Darwin-set-LDSHARED-if.patch
# Use sysconfigdata to find headers. Fixes cross-compilation of extension modules.
./3.7/fix-finding-headers-when-cross-compiling.patch
-
] ++ optionals stdenv.hostPlatform.isLoongArch64 [
+
] ++ optionals (pythonOlder "3.12") [
# https://github.com/python/cpython/issues/90656
./loongarch-support.patch
+
] ++ optionals (pythonAtLeast "3.11" && pythonOlder "3.13") [
+
# backport fix for https://github.com/python/cpython/issues/95855
+
./platform-triplet-detection.patch
] ++ optionals (stdenv.hostPlatform.isMinGW) (let
# https://src.fedoraproject.org/rpms/mingw-python3
mingw-patch = fetchgit {
+295
pkgs/development/interpreters/python/cpython/platform-triplet-detection.patch
···
+
diff --git a/configure.ac b/configure.ac
+
index ba768aea93..621ac166bd 100644
+
--- a/configure.ac
+
+++ b/configure.ac
+
@@ -936,125 +936,192 @@ cat > conftest.c <<EOF
+
#if defined(__ANDROID__)
+
# Android is not a multiarch system.
+
#elif defined(__linux__)
+
+# 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
+
+# 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__)
+
- x86_64-linux-gnu
+
+ x86_64-linux-LIBC
+
# elif defined(__x86_64__) && defined(__ILP32__)
+
- x86_64-linux-gnux32
+
+ x86_64-linux-LIBC_X32
+
# elif defined(__i386__)
+
- i386-linux-gnu
+
+ i386-linux-LIBC
+
# elif defined(__aarch64__) && defined(__AARCH64EL__)
+
# if defined(__ILP32__)
+
- aarch64_ilp32-linux-gnu
+
+ aarch64_ilp32-linux-LIBC
+
# else
+
- aarch64-linux-gnu
+
+ aarch64-linux-LIBC
+
# endif
+
# elif defined(__aarch64__) && defined(__AARCH64EB__)
+
# if defined(__ILP32__)
+
- aarch64_be_ilp32-linux-gnu
+
+ aarch64_be_ilp32-linux-LIBC
+
# else
+
- aarch64_be-linux-gnu
+
+ aarch64_be-linux-LIBC
+
# endif
+
# elif defined(__alpha__)
+
- alpha-linux-gnu
+
-# elif defined(__ARM_EABI__) && defined(__ARM_PCS_VFP)
+
+ alpha-linux-LIBC
+
+# elif defined(__ARM_EABI__)
+
# if defined(__ARMEL__)
+
- arm-linux-gnueabihf
+
+ arm-linux-LIBC_ARM
+
# else
+
- armeb-linux-gnueabihf
+
-# endif
+
-# elif defined(__ARM_EABI__) && !defined(__ARM_PCS_VFP)
+
-# if defined(__ARMEL__)
+
- arm-linux-gnueabi
+
-# else
+
- armeb-linux-gnueabi
+
+ armeb-linux-LIBC_ARM
+
# endif
+
# elif defined(__hppa__)
+
- hppa-linux-gnu
+
+ hppa-linux-LIBC
+
# elif defined(__ia64__)
+
- ia64-linux-gnu
+
-# elif defined(__loongarch__)
+
-# if defined(__loongarch_lp64)
+
-# if defined(__loongarch_soft_float)
+
- loongarch64-linux-gnusf
+
-# elif defined(__loongarch_single_float)
+
- loongarch64-linux-gnuf32
+
-# elif defined(__loongarch_double_float)
+
- loongarch64-linux-gnu
+
+ ia64-linux-LIBC
+
+# elif defined(__loongarch__) && defined(__loongarch_lp64)
+
+ loongarch64-linux-LIBC_LA
+
+# elif defined(__m68k__) && !defined(__mcoldfire__)
+
+ m68k-linux-LIBC
+
+# elif defined(__mips__)
+
+# if defined(__mips_isa_rev) && (__mips_isa_rev >=6)
+
+# if defined(_MIPSEL) && defined(__mips64)
+
+ mipsisa64r6el-linux-LIBC_MIPS
+
+# elif defined(_MIPSEL)
+
+ mipsisa32r6el-linux-LIBC_MIPS
+
+# elif defined(__mips64)
+
+ mipsisa64r6-linux-LIBC_MIPS
+
# else
+
-# error unknown platform triplet
+
+ mipsisa32r6-linux-LIBC_MIPS
+
# endif
+
# else
+
-# error unknown platform triplet
+
-# endif
+
-# elif defined(__m68k__) && !defined(__mcoldfire__)
+
- m68k-linux-gnu
+
-# elif defined(__mips_hard_float) && defined(__mips_isa_rev) && (__mips_isa_rev >=6) && defined(_MIPSEL)
+
-# if _MIPS_SIM == _ABIO32
+
- mipsisa32r6el-linux-gnu
+
-# elif _MIPS_SIM == _ABIN32
+
- mipsisa64r6el-linux-gnuabin32
+
-# elif _MIPS_SIM == _ABI64
+
- mipsisa64r6el-linux-gnuabi64
+
-# else
+
-# error unknown platform triplet
+
-# endif
+
-# elif defined(__mips_hard_float) && defined(__mips_isa_rev) && (__mips_isa_rev >=6)
+
-# if _MIPS_SIM == _ABIO32
+
- mipsisa32r6-linux-gnu
+
-# elif _MIPS_SIM == _ABIN32
+
- mipsisa64r6-linux-gnuabin32
+
-# elif _MIPS_SIM == _ABI64
+
- mipsisa64r6-linux-gnuabi64
+
-# else
+
-# error unknown platform triplet
+
-# endif
+
-# elif defined(__mips_hard_float) && defined(_MIPSEL)
+
-# if _MIPS_SIM == _ABIO32
+
- mipsel-linux-gnu
+
-# elif _MIPS_SIM == _ABIN32
+
- mips64el-linux-gnuabin32
+
-# elif _MIPS_SIM == _ABI64
+
- mips64el-linux-gnuabi64
+
-# else
+
-# error unknown platform triplet
+
-# endif
+
-# elif defined(__mips_hard_float)
+
-# if _MIPS_SIM == _ABIO32
+
- mips-linux-gnu
+
-# elif _MIPS_SIM == _ABIN32
+
- mips64-linux-gnuabin32
+
-# elif _MIPS_SIM == _ABI64
+
- mips64-linux-gnuabi64
+
-# else
+
-# error unknown platform triplet
+
+# if defined(_MIPSEL) && defined(__mips64)
+
+ mips64el-linux-LIBC_MIPS
+
+# elif defined(_MIPSEL)
+
+ mipsel-linux-LIBC_MIPS
+
+# elif defined(__mips64)
+
+ mips64-linux-LIBC_MIPS
+
+# else
+
+ mips-linux-LIBC_MIPS
+
+# endif
+
# endif
+
# elif defined(__or1k__)
+
- or1k-linux-gnu
+
-# elif defined(__powerpc__) && defined(__SPE__)
+
- powerpc-linux-gnuspe
+
+ or1k-linux-LIBC
+
# elif defined(__powerpc64__)
+
# if defined(__LITTLE_ENDIAN__)
+
- powerpc64le-linux-gnu
+
+ powerpc64le-linux-LIBC
+
# else
+
- powerpc64-linux-gnu
+
+ powerpc64-linux-LIBC
+
# endif
+
# elif defined(__powerpc__)
+
- powerpc-linux-gnu
+
+ powerpc-linux-LIBC_PPC
+
# elif defined(__s390x__)
+
- s390x-linux-gnu
+
+ s390x-linux-LIBC
+
# elif defined(__s390__)
+
- s390-linux-gnu
+
+ s390-linux-LIBC
+
# elif defined(__sh__) && defined(__LITTLE_ENDIAN__)
+
- sh4-linux-gnu
+
+ sh4-linux-LIBC
+
# elif defined(__sparc__) && defined(__arch64__)
+
- sparc64-linux-gnu
+
+ sparc64-linux-LIBC
+
# elif defined(__sparc__)
+
- sparc-linux-gnu
+
+ sparc-linux-LIBC
+
# elif defined(__riscv)
+
# if __riscv_xlen == 32
+
- riscv32-linux-gnu
+
+ riscv32-linux-LIBC
+
# elif __riscv_xlen == 64
+
- riscv64-linux-gnu
+
+ riscv64-linux-LIBC
+
# else
+
# error unknown platform triplet
+
# endif
+
@@ -1102,12 +1169,7 @@ cat > conftest.c <<EOF
+
EOF
+
+
if $CPP $CPPFLAGS conftest.c >conftest.out 2>/dev/null; then
+
- PLATFORM_TRIPLET=`grep -v '^#' conftest.out | grep -v '^ *$' | tr -d ' '`
+
- case "$build_os" in
+
- linux-musl*)
+
- PLATFORM_TRIPLET=`echo "$PLATFORM_TRIPLET" | sed 's/linux-gnu/linux-musl/'`
+
- ;;
+
- esac
+
+ PLATFORM_TRIPLET=`grep -v '^#' conftest.out | grep -v '^ *$' | grep -v typedef | tr -d ' '`
+
AC_MSG_RESULT([$PLATFORM_TRIPLET])
+
else
+
AC_MSG_RESULT([none])