Feature #202 ยป 0022-Update-host-cpu-abi.m4-to-serial-17.patch
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# host-cpu-c-abi.m4 serial 16
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dnl Copyright (C) 2002-2023 Free Software Foundation, Inc.
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# host-cpu-c-abi.m4 serial 17
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dnl Copyright (C) 2002-2024 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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| ... | ... | |
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dnl Sets the HOST_CPU_C_ABI_32BIT variable to 'yes' if the C language ABI
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dnl (application binary interface) is a 32-bit one, to 'no' if it is a 64-bit
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dnl one, or to 'unknown' if unknown.
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dnl one.
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dnl This is a simplified variant of gl_HOST_CPU_C_ABI.
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AC_DEFUN([gl_HOST_CPU_C_ABI_32BIT],
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[
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AC_REQUIRE([AC_CANONICAL_HOST])
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AC_CACHE_CHECK([32-bit host C ABI], [gl_cv_host_cpu_c_abi_32bit],
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[if test -n "$gl_cv_host_cpu_c_abi"; then
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dnl gl_HOST_CPU_C_ABI has already been run. Use its result.
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case "$gl_cv_host_cpu_c_abi" in
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i386 | x86_64-x32 | arm | armhf | arm64-ilp32 | hppa | ia64-ilp32 | mips | mipsn32 | powerpc | riscv*-ilp32* | s390 | sparc)
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gl_cv_host_cpu_c_abi_32bit=yes ;;
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x86_64 | alpha | arm64 | aarch64c | hppa64 | ia64 | mips64 | powerpc64 | powerpc64-elfv2 | riscv*-lp64* | s390x | sparc64 )
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gl_cv_host_cpu_c_abi_32bit=no ;;
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*)
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gl_cv_host_cpu_c_abi_32bit=unknown ;;
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esac
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else
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case "$host_cpu" in
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# CPUs that only support a 32-bit ABI.
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arc \
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| bfin \
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| cris* \
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| csky \
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| epiphany \
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| ft32 \
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| h8300 \
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| m68k \
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| microblaze | microblazeel \
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| nds32 | nds32le | nds32be \
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| nios2 | nios2eb | nios2el \
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| or1k* \
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| or32 \
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| sh | sh[1234] | sh[1234]e[lb] \
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| tic6x \
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| xtensa* )
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gl_cv_host_cpu_c_abi_32bit=yes
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;;
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[case "$host_cpu" in
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# CPUs that only support a 64-bit ABI.
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changequote(,)dnl
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alpha | alphaev[4-8] | alphaev56 | alphapca5[67] | alphaev6[78] \
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| mmix )
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changequote([,])dnl
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gl_cv_host_cpu_c_abi_32bit=no
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;;
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# CPUs that only support a 32-bit ABI.
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arc \
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| bfin \
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| cris* \
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| csky \
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| epiphany \
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| ft32 \
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| h8300 \
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| m68k \
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| microblaze | microblazeel \
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| nds32 | nds32le | nds32be \
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| nios2 | nios2eb | nios2el \
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| or1k* \
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| or32 \
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| sh | sh[1234] | sh[1234]e[lb] \
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| tic6x \
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| xtensa* )
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gl_cv_host_cpu_c_abi_32bit=yes
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;;
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# CPUs that only support a 64-bit ABI.
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changequote(,)dnl
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i[34567]86 )
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alpha | alphaev[4-8] | alphaev56 | alphapca5[67] | alphaev6[78] \
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| mmix )
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changequote([,])dnl
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gl_cv_host_cpu_c_abi_32bit=yes
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;;
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x86_64 )
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# On x86_64 systems, the C compiler may be generating code in one of
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# these ABIs:
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# - 64-bit instruction set, 64-bit pointers, 64-bit 'long': x86_64.
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# - 64-bit instruction set, 64-bit pointers, 32-bit 'long': x86_64
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# with native Windows (mingw, MSVC).
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# - 64-bit instruction set, 32-bit pointers, 32-bit 'long': x86_64-x32.
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# - 32-bit instruction set, 32-bit pointers, 32-bit 'long': i386.
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AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE(
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[[#if (defined __x86_64__ || defined __amd64__ \
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|| defined _M_X64 || defined _M_AMD64) \
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&& !(defined __ILP32__ || defined _ILP32)
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int ok;
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#else
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error fail
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#endif
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]])],
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[gl_cv_host_cpu_c_abi_32bit=no],
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[gl_cv_host_cpu_c_abi_32bit=yes])
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;;
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arm* | aarch64 | aarch64c )
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# Assume arm with EABI.
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# On arm64 systems, the C compiler may be generating code in one of
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# these ABIs:
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# - aarch64 instruction set, 64-bit pointers, 64-bit 'long': arm64.
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# - aarch64 instruction set, 32-bit pointers, 32-bit 'long': arm64-ilp32.
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# - 32-bit instruction set, 32-bit pointers, 32-bit 'long': arm or armhf.
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AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE(
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[[#if defined __aarch64__ && !(defined __ILP32__ || defined _ILP32)
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int ok;
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#else
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error fail
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#endif
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]])],
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[gl_cv_host_cpu_c_abi_32bit=no],
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[gl_cv_host_cpu_c_abi_32bit=yes])
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;;
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hppa1.0 | hppa1.1 | hppa2.0* | hppa64 )
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# On hppa, the C compiler may be generating 32-bit code or 64-bit
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# code. In the latter case, it defines _LP64 and __LP64__.
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AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE(
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[[#ifdef __LP64__
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int ok;
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#else
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error fail
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#endif
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]])],
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[gl_cv_host_cpu_c_abi_32bit=no],
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[gl_cv_host_cpu_c_abi_32bit=yes])
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;;
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ia64* )
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# On ia64 on HP-UX, the C compiler may be generating 64-bit code or
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# 32-bit code. In the latter case, it defines _ILP32.
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AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE(
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[[#ifdef _ILP32
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int ok;
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#else
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error fail
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#endif
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]])],
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[gl_cv_host_cpu_c_abi_32bit=yes],
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[gl_cv_host_cpu_c_abi_32bit=no])
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;;
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mips* )
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# We should also check for (_MIPS_SZPTR == 64), but gcc keeps this
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# at 32.
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AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE(
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[[#if defined _MIPS_SZLONG && (_MIPS_SZLONG == 64)
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int ok;
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#else
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error fail
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#endif
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]])],
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[gl_cv_host_cpu_c_abi_32bit=no],
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[gl_cv_host_cpu_c_abi_32bit=yes])
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;;
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powerpc* )
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# Different ABIs are in use on AIX vs. Mac OS X vs. Linux,*BSD.
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# No need to distinguish them here; the caller may distinguish
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# them based on the OS.
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# On powerpc64 systems, the C compiler may still be generating
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# 32-bit code. And on powerpc-ibm-aix systems, the C compiler may
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# be generating 64-bit code.
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AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE(
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[[#if defined __powerpc64__ || defined __LP64__
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int ok;
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#else
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error fail
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#endif
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]])],
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[gl_cv_host_cpu_c_abi_32bit=no],
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[gl_cv_host_cpu_c_abi_32bit=yes])
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;;
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rs6000 )
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gl_cv_host_cpu_c_abi_32bit=yes
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;;
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riscv32 | riscv64 )
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# There are 6 ABIs: ilp32, ilp32f, ilp32d, lp64, lp64f, lp64d.
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# Size of 'long' and 'void *':
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AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE(
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[[#if defined __LP64__
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int ok;
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#else
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error fail
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#endif
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]])],
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[gl_cv_host_cpu_c_abi_32bit=no],
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[gl_cv_host_cpu_c_abi_32bit=yes])
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;;
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s390* )
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# On s390x, the C compiler may be generating 64-bit (= s390x) code
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# or 31-bit (= s390) code.
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AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE(
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[[#if defined __LP64__ || defined __s390x__
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int ok;
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#else
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error fail
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#endif
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]])],
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[gl_cv_host_cpu_c_abi_32bit=no],
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[gl_cv_host_cpu_c_abi_32bit=yes])
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;;
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gl_cv_host_cpu_c_abi_32bit=no
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;;
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sparc | sparc64 )
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# UltraSPARCs running Linux have `uname -m` = "sparc64", but the
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# C compiler still generates 32-bit code.
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*)
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if test -n "$gl_cv_host_cpu_c_abi"; then
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dnl gl_HOST_CPU_C_ABI has already been run. Use its result.
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case "$gl_cv_host_cpu_c_abi" in
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i386 | x86_64-x32 | arm | armhf | arm64-ilp32 | hppa | ia64-ilp32 | mips | mipsn32 | powerpc | riscv*-ilp32* | s390 | sparc)
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gl_cv_host_cpu_c_abi_32bit=yes ;;
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x86_64 | alpha | arm64 | aarch64c | hppa64 | ia64 | mips64 | powerpc64 | powerpc64-elfv2 | riscv*-lp64* | s390x | sparc64 )
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gl_cv_host_cpu_c_abi_32bit=no ;;
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*)
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gl_cv_host_cpu_c_abi_32bit=unknown ;;
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esac
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else
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gl_cv_host_cpu_c_abi_32bit=unknown
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fi
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if test $gl_cv_host_cpu_c_abi_32bit = unknown; then
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AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE(
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[[#if defined __sparcv9 || defined __arch64__
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int ok;
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#else
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error fail
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#endif
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[[int test_pointer_size[sizeof (void *) - 5];
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]])],
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[gl_cv_host_cpu_c_abi_32bit=no],
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[gl_cv_host_cpu_c_abi_32bit=yes])
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;;
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*)
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gl_cv_host_cpu_c_abi_32bit=unknown
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;;
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esac
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fi
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fi
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;;
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esac
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])
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HOST_CPU_C_ABI_32BIT="$gl_cv_host_cpu_c_abi_32bit"
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