mirror of https://gitee.com/openkylin/wget.git
645 lines
21 KiB
Plaintext
645 lines
21 KiB
Plaintext
# host-cpu-c-abi.m4 serial 11
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dnl Copyright (C) 2002-2019 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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dnl From Bruno Haible and Sam Steingold.
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dnl Sets the HOST_CPU variable to the canonical name of the CPU.
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dnl Sets the HOST_CPU_C_ABI variable to the canonical name of the CPU with its
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dnl C language ABI (application binary interface).
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dnl Also defines __${HOST_CPU}__ and __${HOST_CPU_C_ABI}__ as C macros in
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dnl config.h.
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dnl
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dnl This canonical name can be used to select a particular assembly language
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dnl source file that will interoperate with C code on the given host.
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dnl
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dnl For example:
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dnl * 'i386' and 'sparc' are different canonical names, because code for i386
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dnl will not run on SPARC CPUs and vice versa. They have different
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dnl instruction sets.
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dnl * 'sparc' and 'sparc64' are different canonical names, because code for
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dnl 'sparc' and code for 'sparc64' cannot be linked together: 'sparc' code
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dnl contains 32-bit instructions, whereas 'sparc64' code contains 64-bit
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dnl instructions. A process on a SPARC CPU can be in 32-bit mode or in 64-bit
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dnl mode, but not both.
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dnl * 'mips' and 'mipsn32' are different canonical names, because they use
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dnl different argument passing and return conventions for C functions, and
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dnl although the instruction set of 'mips' is a large subset of the
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dnl instruction set of 'mipsn32'.
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dnl * 'mipsn32' and 'mips64' are different canonical names, because they use
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dnl different sizes for the C types like 'int' and 'void *', and although
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dnl the instruction sets of 'mipsn32' and 'mips64' are the same.
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dnl * The same canonical name is used for different endiannesses. You can
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dnl determine the endianness through preprocessor symbols:
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dnl - 'arm': test __ARMEL__.
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dnl - 'mips', 'mipsn32', 'mips64': test _MIPSEB vs. _MIPSEL.
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dnl - 'powerpc64': test _BIG_ENDIAN vs. _LITTLE_ENDIAN.
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dnl * The same name 'i386' is used for CPUs of type i386, i486, i586
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dnl (Pentium), AMD K7, Pentium II, Pentium IV, etc., because
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dnl - Instructions that do not exist on all of these CPUs (cmpxchg,
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dnl MMX, SSE, SSE2, 3DNow! etc.) are not frequently used. If your
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dnl assembly language source files use such instructions, you will
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dnl need to make the distinction.
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dnl - Speed of execution of the common instruction set is reasonable across
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dnl the entire family of CPUs. If you have assembly language source files
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dnl that are optimized for particular CPU types (like GNU gmp has), you
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dnl will need to make the distinction.
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dnl See <https://en.wikipedia.org/wiki/X86_instruction_listings>.
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AC_DEFUN([gl_HOST_CPU_C_ABI],
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[
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AC_REQUIRE([AC_CANONICAL_HOST])
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AC_REQUIRE([gl_C_ASM])
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AC_CACHE_CHECK([host CPU and C ABI], [gl_cv_host_cpu_c_abi],
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[case "$host_cpu" in
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changequote(,)dnl
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i[4567]86 )
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changequote([,])dnl
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gl_cv_host_cpu_c_abi=i386
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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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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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[AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE(
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[[#if 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=x86_64-x32],
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[gl_cv_host_cpu_c_abi=x86_64])],
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[gl_cv_host_cpu_c_abi=i386])
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;;
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changequote(,)dnl
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alphaev[4-8] | alphaev56 | alphapca5[67] | alphaev6[78] )
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changequote([,])dnl
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gl_cv_host_cpu_c_abi=alpha
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;;
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arm* | aarch64 )
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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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[[#ifdef __aarch64__
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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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[AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE(
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[[#if 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=arm64-ilp32],
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[gl_cv_host_cpu_c_abi=arm64])],
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[# Don't distinguish little-endian and big-endian arm, since they
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# don't require different machine code for simple operations and
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# since the user can distinguish them through the preprocessor
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# defines __ARMEL__ vs. __ARMEB__.
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# But distinguish arm which passes floating-point arguments and
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# return values in integer registers (r0, r1, ...) - this is
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# gcc -mfloat-abi=soft or gcc -mfloat-abi=softfp - from arm which
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# passes them in float registers (s0, s1, ...) and double registers
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# (d0, d1, ...) - this is gcc -mfloat-abi=hard. GCC 4.6 or newer
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# sets the preprocessor defines __ARM_PCS (for the first case) and
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# __ARM_PCS_VFP (for the second case), but older GCC does not.
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echo 'double ddd; void func (double dd) { ddd = dd; }' > conftest.c
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# Look for a reference to the register d0 in the .s file.
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AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS $gl_c_asm_opt conftest.c) >/dev/null 2>&1
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if LC_ALL=C grep 'd0,' conftest.$gl_asmext >/dev/null; then
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gl_cv_host_cpu_c_abi=armhf
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else
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gl_cv_host_cpu_c_abi=arm
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fi
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rm -f conftest*
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])
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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=hppa64],
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[gl_cv_host_cpu_c_abi=hppa])
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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=ia64-ilp32],
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[gl_cv_host_cpu_c_abi=ia64])
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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=mips64],
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[# In the n32 ABI, _ABIN32 is defined, _ABIO32 is not defined (but
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# may later get defined by <sgidefs.h>), and _MIPS_SIM == _ABIN32.
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# In the 32 ABI, _ABIO32 is defined, _ABIN32 is not defined (but
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# may later get defined by <sgidefs.h>), and _MIPS_SIM == _ABIO32.
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AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE(
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[[#if (_MIPS_SIM == _ABIN32)
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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=mipsn32],
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[gl_cv_host_cpu_c_abi=mips])])
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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 _ARCH_PPC64
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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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[# On powerpc64, there are two ABIs on Linux: The AIX compatible
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# one and the ELFv2 one. The latter defines _CALL_ELF=2.
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AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE(
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[[#if defined _CALL_ELF && _CALL_ELF == 2
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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=powerpc64-elfv2],
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[gl_cv_host_cpu_c_abi=powerpc64])
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],
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[gl_cv_host_cpu_c_abi=powerpc])
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;;
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rs6000 )
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gl_cv_host_cpu_c_abi=powerpc
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;;
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riscv32 | riscv64 )
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# There are 2 architectures (with variants): rv32* and rv64*.
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AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE(
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[[#if __riscv_xlen == 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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[cpu=riscv64],
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[cpu=riscv32])
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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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[main_abi=lp64],
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[main_abi=ilp32])
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# Float ABIs:
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# __riscv_float_abi_double:
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# 'float' and 'double' are passed in floating-point registers.
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# __riscv_float_abi_single:
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# 'float' are passed in floating-point registers.
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# __riscv_float_abi_soft:
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# No values are passed in floating-point registers.
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AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE(
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[[#if defined __riscv_float_abi_double
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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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[float_abi=d],
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[AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE(
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[[#if defined __riscv_float_abi_single
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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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[float_abi=f],
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[float_abi=''])
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])
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gl_cv_host_cpu_c_abi="${cpu}-${main_abi}${float_abi}"
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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=s390x],
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[gl_cv_host_cpu_c_abi=s390])
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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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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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]])],
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[gl_cv_host_cpu_c_abi=sparc64],
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[gl_cv_host_cpu_c_abi=sparc])
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;;
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*)
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gl_cv_host_cpu_c_abi="$host_cpu"
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;;
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esac
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])
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dnl In most cases, $HOST_CPU and $HOST_CPU_C_ABI are the same.
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HOST_CPU=`echo "$gl_cv_host_cpu_c_abi" | sed -e 's/-.*//'`
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HOST_CPU_C_ABI="$gl_cv_host_cpu_c_abi"
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AC_SUBST([HOST_CPU])
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AC_SUBST([HOST_CPU_C_ABI])
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# This was
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# AC_DEFINE_UNQUOTED([__${HOST_CPU}__])
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# AC_DEFINE_UNQUOTED([__${HOST_CPU_C_ABI}__])
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# earlier, but KAI C++ 3.2d doesn't like this.
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sed -e 's/-/_/g' >> confdefs.h <<EOF
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#ifndef __${HOST_CPU}__
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#define __${HOST_CPU}__ 1
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#endif
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#ifndef __${HOST_CPU_C_ABI}__
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#define __${HOST_CPU_C_ABI}__ 1
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#endif
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EOF
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AH_TOP([/* CPU and C ABI indicator */
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#ifndef __i386__
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#undef __i386__
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#endif
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#ifndef __x86_64_x32__
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#undef __x86_64_x32__
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#endif
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#ifndef __x86_64__
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#undef __x86_64__
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#endif
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#ifndef __alpha__
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#undef __alpha__
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#endif
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#ifndef __arm__
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#undef __arm__
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#endif
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#ifndef __armhf__
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#undef __armhf__
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#endif
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#ifndef __arm64_ilp32__
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#undef __arm64_ilp32__
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#endif
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#ifndef __arm64__
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#undef __arm64__
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#endif
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#ifndef __hppa__
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#undef __hppa__
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#endif
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#ifndef __hppa64__
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#undef __hppa64__
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#endif
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#ifndef __ia64_ilp32__
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#undef __ia64_ilp32__
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#endif
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#ifndef __ia64__
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#undef __ia64__
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#endif
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#ifndef __m68k__
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#undef __m68k__
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#endif
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#ifndef __mips__
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#undef __mips__
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#endif
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#ifndef __mipsn32__
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#undef __mipsn32__
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#endif
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#ifndef __mips64__
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#undef __mips64__
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#endif
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#ifndef __powerpc__
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#undef __powerpc__
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#endif
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#ifndef __powerpc64__
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#undef __powerpc64__
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#endif
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#ifndef __powerpc64_elfv2__
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#undef __powerpc64_elfv2__
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#endif
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#ifndef __riscv32__
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#undef __riscv32__
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#endif
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#ifndef __riscv64__
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#undef __riscv64__
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#endif
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#ifndef __riscv32_ilp32__
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#undef __riscv32_ilp32__
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#endif
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#ifndef __riscv32_ilp32f__
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#undef __riscv32_ilp32f__
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#endif
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#ifndef __riscv32_ilp32d__
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#undef __riscv32_ilp32d__
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#endif
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#ifndef __riscv64_ilp32__
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#undef __riscv64_ilp32__
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#endif
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#ifndef __riscv64_ilp32f__
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#undef __riscv64_ilp32f__
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#endif
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#ifndef __riscv64_ilp32d__
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#undef __riscv64_ilp32d__
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#endif
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#ifndef __riscv64_lp64__
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#undef __riscv64_lp64__
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#endif
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#ifndef __riscv64_lp64f__
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#undef __riscv64_lp64f__
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#endif
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#ifndef __riscv64_lp64d__
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#undef __riscv64_lp64d__
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#endif
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#ifndef __s390__
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#undef __s390__
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#endif
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#ifndef __s390x__
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#undef __s390x__
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#endif
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#ifndef __sh__
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#undef __sh__
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#endif
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#ifndef __sparc__
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#undef __sparc__
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#endif
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#ifndef __sparc64__
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#undef __sparc64__
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#endif
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])
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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, or to 'no' otherwise.
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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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case "$gl_cv_host_cpu_c_abi" in
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i386 | x86_64-x32 | arm | armhf | arm64-ilp32 | hppa | ia64-ilp32 | mips | mipsn32 | powerpc | riscv*-ilp32* | s390 | sparc)
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gl_cv_host_cpu_c_abi_32bit=yes ;;
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*)
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gl_cv_host_cpu_c_abi_32bit=no ;;
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esac
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else
|
|
case "$host_cpu" in
|
|
|
|
changequote(,)dnl
|
|
i[4567]86 )
|
|
changequote([,])dnl
|
|
gl_cv_host_cpu_c_abi_32bit=yes
|
|
;;
|
|
|
|
x86_64 )
|
|
# On x86_64 systems, the C compiler may be generating code in one of
|
|
# these ABIs:
|
|
# - 64-bit instruction set, 64-bit pointers, 64-bit 'long': x86_64.
|
|
# - 64-bit instruction set, 64-bit pointers, 32-bit 'long': x86_64
|
|
# with native Windows (mingw, MSVC).
|
|
# - 64-bit instruction set, 32-bit pointers, 32-bit 'long': x86_64-x32.
|
|
# - 32-bit instruction set, 32-bit pointers, 32-bit 'long': i386.
|
|
AC_COMPILE_IFELSE(
|
|
[AC_LANG_SOURCE(
|
|
[[#if (defined __x86_64__ || defined __amd64__ \
|
|
|| defined _M_X64 || defined _M_AMD64) \
|
|
&& !(defined __ILP32__ || defined _ILP32)
|
|
int ok;
|
|
#else
|
|
error fail
|
|
#endif
|
|
]])],
|
|
[gl_cv_host_cpu_c_abi_32bit=no],
|
|
[gl_cv_host_cpu_c_abi_32bit=yes])
|
|
;;
|
|
|
|
arm* | aarch64 )
|
|
# Assume arm with EABI.
|
|
# On arm64 systems, the C compiler may be generating code in one of
|
|
# these ABIs:
|
|
# - aarch64 instruction set, 64-bit pointers, 64-bit 'long': arm64.
|
|
# - aarch64 instruction set, 32-bit pointers, 32-bit 'long': arm64-ilp32.
|
|
# - 32-bit instruction set, 32-bit pointers, 32-bit 'long': arm or armhf.
|
|
AC_COMPILE_IFELSE(
|
|
[AC_LANG_SOURCE(
|
|
[[#if defined __aarch64__ && !(defined __ILP32__ || defined _ILP32)
|
|
int ok;
|
|
#else
|
|
error fail
|
|
#endif
|
|
]])],
|
|
[gl_cv_host_cpu_c_abi_32bit=no],
|
|
[gl_cv_host_cpu_c_abi_32bit=yes])
|
|
;;
|
|
|
|
hppa1.0 | hppa1.1 | hppa2.0* | hppa64 )
|
|
# On hppa, the C compiler may be generating 32-bit code or 64-bit
|
|
# code. In the latter case, it defines _LP64 and __LP64__.
|
|
AC_COMPILE_IFELSE(
|
|
[AC_LANG_SOURCE(
|
|
[[#ifdef __LP64__
|
|
int ok;
|
|
#else
|
|
error fail
|
|
#endif
|
|
]])],
|
|
[gl_cv_host_cpu_c_abi_32bit=no],
|
|
[gl_cv_host_cpu_c_abi_32bit=yes])
|
|
;;
|
|
|
|
ia64* )
|
|
# On ia64 on HP-UX, the C compiler may be generating 64-bit code or
|
|
# 32-bit code. In the latter case, it defines _ILP32.
|
|
AC_COMPILE_IFELSE(
|
|
[AC_LANG_SOURCE(
|
|
[[#ifdef _ILP32
|
|
int ok;
|
|
#else
|
|
error fail
|
|
#endif
|
|
]])],
|
|
[gl_cv_host_cpu_c_abi_32bit=yes],
|
|
[gl_cv_host_cpu_c_abi_32bit=no])
|
|
;;
|
|
|
|
mips* )
|
|
# We should also check for (_MIPS_SZPTR == 64), but gcc keeps this
|
|
# at 32.
|
|
AC_COMPILE_IFELSE(
|
|
[AC_LANG_SOURCE(
|
|
[[#if defined _MIPS_SZLONG && (_MIPS_SZLONG == 64)
|
|
int ok;
|
|
#else
|
|
error fail
|
|
#endif
|
|
]])],
|
|
[gl_cv_host_cpu_c_abi_32bit=no],
|
|
[gl_cv_host_cpu_c_abi_32bit=yes])
|
|
;;
|
|
|
|
powerpc* )
|
|
# Different ABIs are in use on AIX vs. Mac OS X vs. Linux,*BSD.
|
|
# No need to distinguish them here; the caller may distinguish
|
|
# them based on the OS.
|
|
# On powerpc64 systems, the C compiler may still be generating
|
|
# 32-bit code. And on powerpc-ibm-aix systems, the C compiler may
|
|
# be generating 64-bit code.
|
|
AC_COMPILE_IFELSE(
|
|
[AC_LANG_SOURCE(
|
|
[[#if defined __powerpc64__ || defined _ARCH_PPC64
|
|
int ok;
|
|
#else
|
|
error fail
|
|
#endif
|
|
]])],
|
|
[gl_cv_host_cpu_c_abi_32bit=no],
|
|
[gl_cv_host_cpu_c_abi_32bit=yes])
|
|
;;
|
|
|
|
rs6000 )
|
|
gl_cv_host_cpu_c_abi_32bit=yes
|
|
;;
|
|
|
|
riscv32 | riscv64 )
|
|
# There are 6 ABIs: ilp32, ilp32f, ilp32d, lp64, lp64f, lp64d.
|
|
# Size of 'long' and 'void *':
|
|
AC_COMPILE_IFELSE(
|
|
[AC_LANG_SOURCE(
|
|
[[#if defined __LP64__
|
|
int ok;
|
|
#else
|
|
error fail
|
|
#endif
|
|
]])],
|
|
[gl_cv_host_cpu_c_abi_32bit=no],
|
|
[gl_cv_host_cpu_c_abi_32bit=yes])
|
|
;;
|
|
|
|
s390* )
|
|
# On s390x, the C compiler may be generating 64-bit (= s390x) code
|
|
# or 31-bit (= s390) code.
|
|
AC_COMPILE_IFELSE(
|
|
[AC_LANG_SOURCE(
|
|
[[#if defined __LP64__ || defined __s390x__
|
|
int ok;
|
|
#else
|
|
error fail
|
|
#endif
|
|
]])],
|
|
[gl_cv_host_cpu_c_abi_32bit=no],
|
|
[gl_cv_host_cpu_c_abi_32bit=yes])
|
|
;;
|
|
|
|
sparc | sparc64 )
|
|
# UltraSPARCs running Linux have `uname -m` = "sparc64", but the
|
|
# C compiler still generates 32-bit code.
|
|
AC_COMPILE_IFELSE(
|
|
[AC_LANG_SOURCE(
|
|
[[#if defined __sparcv9 || defined __arch64__
|
|
int ok;
|
|
#else
|
|
error fail
|
|
#endif
|
|
]])],
|
|
[gl_cv_host_cpu_c_abi_32bit=no],
|
|
[gl_cv_host_cpu_c_abi_32bit=yes])
|
|
;;
|
|
|
|
*)
|
|
gl_cv_host_cpu_c_abi_32bit=no
|
|
;;
|
|
esac
|
|
fi
|
|
])
|
|
|
|
HOST_CPU_C_ABI_32BIT="$gl_cv_host_cpu_c_abi_32bit"
|
|
])
|