868b2b66 (kx 2024-12-20 16:11:07 +0300 1) # host-cpu-c-abi.m4 serial 13
868b2b66 (kx 2024-12-20 16:11:07 +0300 2) dnl Copyright (C) 2002-2020 Free Software Foundation, Inc.
868b2b66 (kx 2024-12-20 16:11:07 +0300 3) dnl This file is free software; the Free Software Foundation
868b2b66 (kx 2024-12-20 16:11:07 +0300 4) dnl gives unlimited permission to copy and/or distribute it,
868b2b66 (kx 2024-12-20 16:11:07 +0300 5) dnl with or without modifications, as long as this notice is preserved.
868b2b66 (kx 2024-12-20 16:11:07 +0300 6)
868b2b66 (kx 2024-12-20 16:11:07 +0300 7) dnl From Bruno Haible and Sam Steingold.
868b2b66 (kx 2024-12-20 16:11:07 +0300 8)
868b2b66 (kx 2024-12-20 16:11:07 +0300 9) dnl Sets the HOST_CPU variable to the canonical name of the CPU.
868b2b66 (kx 2024-12-20 16:11:07 +0300 10) dnl Sets the HOST_CPU_C_ABI variable to the canonical name of the CPU with its
868b2b66 (kx 2024-12-20 16:11:07 +0300 11) dnl C language ABI (application binary interface).
868b2b66 (kx 2024-12-20 16:11:07 +0300 12) dnl Also defines __${HOST_CPU}__ and __${HOST_CPU_C_ABI}__ as C macros in
868b2b66 (kx 2024-12-20 16:11:07 +0300 13) dnl config.h.
868b2b66 (kx 2024-12-20 16:11:07 +0300 14) dnl
868b2b66 (kx 2024-12-20 16:11:07 +0300 15) dnl This canonical name can be used to select a particular assembly language
868b2b66 (kx 2024-12-20 16:11:07 +0300 16) dnl source file that will interoperate with C code on the given host.
868b2b66 (kx 2024-12-20 16:11:07 +0300 17) dnl
868b2b66 (kx 2024-12-20 16:11:07 +0300 18) dnl For example:
868b2b66 (kx 2024-12-20 16:11:07 +0300 19) dnl * 'i386' and 'sparc' are different canonical names, because code for i386
868b2b66 (kx 2024-12-20 16:11:07 +0300 20) dnl will not run on SPARC CPUs and vice versa. They have different
868b2b66 (kx 2024-12-20 16:11:07 +0300 21) dnl instruction sets.
868b2b66 (kx 2024-12-20 16:11:07 +0300 22) dnl * 'sparc' and 'sparc64' are different canonical names, because code for
868b2b66 (kx 2024-12-20 16:11:07 +0300 23) dnl 'sparc' and code for 'sparc64' cannot be linked together: 'sparc' code
868b2b66 (kx 2024-12-20 16:11:07 +0300 24) dnl contains 32-bit instructions, whereas 'sparc64' code contains 64-bit
868b2b66 (kx 2024-12-20 16:11:07 +0300 25) dnl instructions. A process on a SPARC CPU can be in 32-bit mode or in 64-bit
868b2b66 (kx 2024-12-20 16:11:07 +0300 26) dnl mode, but not both.
868b2b66 (kx 2024-12-20 16:11:07 +0300 27) dnl * 'mips' and 'mipsn32' are different canonical names, because they use
868b2b66 (kx 2024-12-20 16:11:07 +0300 28) dnl different argument passing and return conventions for C functions, and
868b2b66 (kx 2024-12-20 16:11:07 +0300 29) dnl although the instruction set of 'mips' is a large subset of the
868b2b66 (kx 2024-12-20 16:11:07 +0300 30) dnl instruction set of 'mipsn32'.
868b2b66 (kx 2024-12-20 16:11:07 +0300 31) dnl * 'mipsn32' and 'mips64' are different canonical names, because they use
868b2b66 (kx 2024-12-20 16:11:07 +0300 32) dnl different sizes for the C types like 'int' and 'void *', and although
868b2b66 (kx 2024-12-20 16:11:07 +0300 33) dnl the instruction sets of 'mipsn32' and 'mips64' are the same.
868b2b66 (kx 2024-12-20 16:11:07 +0300 34) dnl * The same canonical name is used for different endiannesses. You can
868b2b66 (kx 2024-12-20 16:11:07 +0300 35) dnl determine the endianness through preprocessor symbols:
868b2b66 (kx 2024-12-20 16:11:07 +0300 36) dnl - 'arm': test __ARMEL__.
868b2b66 (kx 2024-12-20 16:11:07 +0300 37) dnl - 'mips', 'mipsn32', 'mips64': test _MIPSEB vs. _MIPSEL.
868b2b66 (kx 2024-12-20 16:11:07 +0300 38) dnl - 'powerpc64': test _BIG_ENDIAN vs. _LITTLE_ENDIAN.
868b2b66 (kx 2024-12-20 16:11:07 +0300 39) dnl * The same name 'i386' is used for CPUs of type i386, i486, i586
868b2b66 (kx 2024-12-20 16:11:07 +0300 40) dnl (Pentium), AMD K7, Pentium II, Pentium IV, etc., because
868b2b66 (kx 2024-12-20 16:11:07 +0300 41) dnl - Instructions that do not exist on all of these CPUs (cmpxchg,
868b2b66 (kx 2024-12-20 16:11:07 +0300 42) dnl MMX, SSE, SSE2, 3DNow! etc.) are not frequently used. If your
868b2b66 (kx 2024-12-20 16:11:07 +0300 43) dnl assembly language source files use such instructions, you will
868b2b66 (kx 2024-12-20 16:11:07 +0300 44) dnl need to make the distinction.
868b2b66 (kx 2024-12-20 16:11:07 +0300 45) dnl - Speed of execution of the common instruction set is reasonable across
868b2b66 (kx 2024-12-20 16:11:07 +0300 46) dnl the entire family of CPUs. If you have assembly language source files
868b2b66 (kx 2024-12-20 16:11:07 +0300 47) dnl that are optimized for particular CPU types (like GNU gmp has), you
868b2b66 (kx 2024-12-20 16:11:07 +0300 48) dnl will need to make the distinction.
868b2b66 (kx 2024-12-20 16:11:07 +0300 49) dnl See <https://en.wikipedia.org/wiki/X86_instruction_listings>.
868b2b66 (kx 2024-12-20 16:11:07 +0300 50) AC_DEFUN([gl_HOST_CPU_C_ABI],
868b2b66 (kx 2024-12-20 16:11:07 +0300 51) [
868b2b66 (kx 2024-12-20 16:11:07 +0300 52) AC_REQUIRE([AC_CANONICAL_HOST])
868b2b66 (kx 2024-12-20 16:11:07 +0300 53) AC_REQUIRE([gl_C_ASM])
868b2b66 (kx 2024-12-20 16:11:07 +0300 54) AC_CACHE_CHECK([host CPU and C ABI], [gl_cv_host_cpu_c_abi],
868b2b66 (kx 2024-12-20 16:11:07 +0300 55) [case "$host_cpu" in
868b2b66 (kx 2024-12-20 16:11:07 +0300 56)
868b2b66 (kx 2024-12-20 16:11:07 +0300 57) changequote(,)dnl
868b2b66 (kx 2024-12-20 16:11:07 +0300 58) i[34567]86 )
868b2b66 (kx 2024-12-20 16:11:07 +0300 59) changequote([,])dnl
868b2b66 (kx 2024-12-20 16:11:07 +0300 60) gl_cv_host_cpu_c_abi=i386
868b2b66 (kx 2024-12-20 16:11:07 +0300 61) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 62)
868b2b66 (kx 2024-12-20 16:11:07 +0300 63) x86_64 )
868b2b66 (kx 2024-12-20 16:11:07 +0300 64) # On x86_64 systems, the C compiler may be generating code in one of
868b2b66 (kx 2024-12-20 16:11:07 +0300 65) # these ABIs:
868b2b66 (kx 2024-12-20 16:11:07 +0300 66) # - 64-bit instruction set, 64-bit pointers, 64-bit 'long': x86_64.
868b2b66 (kx 2024-12-20 16:11:07 +0300 67) # - 64-bit instruction set, 64-bit pointers, 32-bit 'long': x86_64
868b2b66 (kx 2024-12-20 16:11:07 +0300 68) # with native Windows (mingw, MSVC).
868b2b66 (kx 2024-12-20 16:11:07 +0300 69) # - 64-bit instruction set, 32-bit pointers, 32-bit 'long': x86_64-x32.
868b2b66 (kx 2024-12-20 16:11:07 +0300 70) # - 32-bit instruction set, 32-bit pointers, 32-bit 'long': i386.
868b2b66 (kx 2024-12-20 16:11:07 +0300 71) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 72) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 73) [[#if (defined __x86_64__ || defined __amd64__ \
868b2b66 (kx 2024-12-20 16:11:07 +0300 74) || defined _M_X64 || defined _M_AMD64)
868b2b66 (kx 2024-12-20 16:11:07 +0300 75) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 76) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 77) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 78) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 79) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 80) [AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 81) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 82) [[#if defined __ILP32__ || defined _ILP32
868b2b66 (kx 2024-12-20 16:11:07 +0300 83) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 84) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 85) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 86) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 87) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 88) [gl_cv_host_cpu_c_abi=x86_64-x32],
868b2b66 (kx 2024-12-20 16:11:07 +0300 89) [gl_cv_host_cpu_c_abi=x86_64])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 90) [gl_cv_host_cpu_c_abi=i386])
868b2b66 (kx 2024-12-20 16:11:07 +0300 91) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 92)
868b2b66 (kx 2024-12-20 16:11:07 +0300 93) changequote(,)dnl
868b2b66 (kx 2024-12-20 16:11:07 +0300 94) alphaev[4-8] | alphaev56 | alphapca5[67] | alphaev6[78] )
868b2b66 (kx 2024-12-20 16:11:07 +0300 95) changequote([,])dnl
868b2b66 (kx 2024-12-20 16:11:07 +0300 96) gl_cv_host_cpu_c_abi=alpha
868b2b66 (kx 2024-12-20 16:11:07 +0300 97) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 98)
868b2b66 (kx 2024-12-20 16:11:07 +0300 99) arm* | aarch64 )
868b2b66 (kx 2024-12-20 16:11:07 +0300 100) # Assume arm with EABI.
868b2b66 (kx 2024-12-20 16:11:07 +0300 101) # On arm64 systems, the C compiler may be generating code in one of
868b2b66 (kx 2024-12-20 16:11:07 +0300 102) # these ABIs:
868b2b66 (kx 2024-12-20 16:11:07 +0300 103) # - aarch64 instruction set, 64-bit pointers, 64-bit 'long': arm64.
868b2b66 (kx 2024-12-20 16:11:07 +0300 104) # - aarch64 instruction set, 32-bit pointers, 32-bit 'long': arm64-ilp32.
868b2b66 (kx 2024-12-20 16:11:07 +0300 105) # - 32-bit instruction set, 32-bit pointers, 32-bit 'long': arm or armhf.
868b2b66 (kx 2024-12-20 16:11:07 +0300 106) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 107) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 108) [[#ifdef __aarch64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 109) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 110) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 111) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 112) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 113) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 114) [AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 115) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 116) [[#if defined __ILP32__ || defined _ILP32
868b2b66 (kx 2024-12-20 16:11:07 +0300 117) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 118) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 119) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 120) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 121) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 122) [gl_cv_host_cpu_c_abi=arm64-ilp32],
868b2b66 (kx 2024-12-20 16:11:07 +0300 123) [gl_cv_host_cpu_c_abi=arm64])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 124) [# Don't distinguish little-endian and big-endian arm, since they
868b2b66 (kx 2024-12-20 16:11:07 +0300 125) # don't require different machine code for simple operations and
868b2b66 (kx 2024-12-20 16:11:07 +0300 126) # since the user can distinguish them through the preprocessor
868b2b66 (kx 2024-12-20 16:11:07 +0300 127) # defines __ARMEL__ vs. __ARMEB__.
868b2b66 (kx 2024-12-20 16:11:07 +0300 128) # But distinguish arm which passes floating-point arguments and
868b2b66 (kx 2024-12-20 16:11:07 +0300 129) # return values in integer registers (r0, r1, ...) - this is
868b2b66 (kx 2024-12-20 16:11:07 +0300 130) # gcc -mfloat-abi=soft or gcc -mfloat-abi=softfp - from arm which
868b2b66 (kx 2024-12-20 16:11:07 +0300 131) # passes them in float registers (s0, s1, ...) and double registers
868b2b66 (kx 2024-12-20 16:11:07 +0300 132) # (d0, d1, ...) - this is gcc -mfloat-abi=hard. GCC 4.6 or newer
868b2b66 (kx 2024-12-20 16:11:07 +0300 133) # sets the preprocessor defines __ARM_PCS (for the first case) and
868b2b66 (kx 2024-12-20 16:11:07 +0300 134) # __ARM_PCS_VFP (for the second case), but older GCC does not.
868b2b66 (kx 2024-12-20 16:11:07 +0300 135) echo 'double ddd; void func (double dd) { ddd = dd; }' > conftest.c
868b2b66 (kx 2024-12-20 16:11:07 +0300 136) # Look for a reference to the register d0 in the .s file.
868b2b66 (kx 2024-12-20 16:11:07 +0300 137) AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS $gl_c_asm_opt conftest.c) >/dev/null 2>&1
868b2b66 (kx 2024-12-20 16:11:07 +0300 138) if LC_ALL=C grep 'd0,' conftest.$gl_asmext >/dev/null; then
868b2b66 (kx 2024-12-20 16:11:07 +0300 139) gl_cv_host_cpu_c_abi=armhf
868b2b66 (kx 2024-12-20 16:11:07 +0300 140) else
868b2b66 (kx 2024-12-20 16:11:07 +0300 141) gl_cv_host_cpu_c_abi=arm
868b2b66 (kx 2024-12-20 16:11:07 +0300 142) fi
868b2b66 (kx 2024-12-20 16:11:07 +0300 143) rm -f conftest*
868b2b66 (kx 2024-12-20 16:11:07 +0300 144) ])
868b2b66 (kx 2024-12-20 16:11:07 +0300 145) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 146)
868b2b66 (kx 2024-12-20 16:11:07 +0300 147) hppa1.0 | hppa1.1 | hppa2.0* | hppa64 )
868b2b66 (kx 2024-12-20 16:11:07 +0300 148) # On hppa, the C compiler may be generating 32-bit code or 64-bit
868b2b66 (kx 2024-12-20 16:11:07 +0300 149) # code. In the latter case, it defines _LP64 and __LP64__.
868b2b66 (kx 2024-12-20 16:11:07 +0300 150) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 151) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 152) [[#ifdef __LP64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 153) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 154) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 155) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 156) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 157) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 158) [gl_cv_host_cpu_c_abi=hppa64],
868b2b66 (kx 2024-12-20 16:11:07 +0300 159) [gl_cv_host_cpu_c_abi=hppa])
868b2b66 (kx 2024-12-20 16:11:07 +0300 160) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 161)
868b2b66 (kx 2024-12-20 16:11:07 +0300 162) ia64* )
868b2b66 (kx 2024-12-20 16:11:07 +0300 163) # On ia64 on HP-UX, the C compiler may be generating 64-bit code or
868b2b66 (kx 2024-12-20 16:11:07 +0300 164) # 32-bit code. In the latter case, it defines _ILP32.
868b2b66 (kx 2024-12-20 16:11:07 +0300 165) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 166) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 167) [[#ifdef _ILP32
868b2b66 (kx 2024-12-20 16:11:07 +0300 168) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 169) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 170) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 171) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 172) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 173) [gl_cv_host_cpu_c_abi=ia64-ilp32],
868b2b66 (kx 2024-12-20 16:11:07 +0300 174) [gl_cv_host_cpu_c_abi=ia64])
868b2b66 (kx 2024-12-20 16:11:07 +0300 175) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 176)
868b2b66 (kx 2024-12-20 16:11:07 +0300 177) mips* )
868b2b66 (kx 2024-12-20 16:11:07 +0300 178) # We should also check for (_MIPS_SZPTR == 64), but gcc keeps this
868b2b66 (kx 2024-12-20 16:11:07 +0300 179) # at 32.
868b2b66 (kx 2024-12-20 16:11:07 +0300 180) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 181) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 182) [[#if defined _MIPS_SZLONG && (_MIPS_SZLONG == 64)
868b2b66 (kx 2024-12-20 16:11:07 +0300 183) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 184) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 185) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 186) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 187) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 188) [gl_cv_host_cpu_c_abi=mips64],
868b2b66 (kx 2024-12-20 16:11:07 +0300 189) [# In the n32 ABI, _ABIN32 is defined, _ABIO32 is not defined (but
868b2b66 (kx 2024-12-20 16:11:07 +0300 190) # may later get defined by <sgidefs.h>), and _MIPS_SIM == _ABIN32.
868b2b66 (kx 2024-12-20 16:11:07 +0300 191) # In the 32 ABI, _ABIO32 is defined, _ABIN32 is not defined (but
868b2b66 (kx 2024-12-20 16:11:07 +0300 192) # may later get defined by <sgidefs.h>), and _MIPS_SIM == _ABIO32.
868b2b66 (kx 2024-12-20 16:11:07 +0300 193) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 194) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 195) [[#if (_MIPS_SIM == _ABIN32)
868b2b66 (kx 2024-12-20 16:11:07 +0300 196) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 197) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 198) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 199) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 200) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 201) [gl_cv_host_cpu_c_abi=mipsn32],
868b2b66 (kx 2024-12-20 16:11:07 +0300 202) [gl_cv_host_cpu_c_abi=mips])])
868b2b66 (kx 2024-12-20 16:11:07 +0300 203) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 204)
868b2b66 (kx 2024-12-20 16:11:07 +0300 205) powerpc* )
868b2b66 (kx 2024-12-20 16:11:07 +0300 206) # Different ABIs are in use on AIX vs. Mac OS X vs. Linux,*BSD.
868b2b66 (kx 2024-12-20 16:11:07 +0300 207) # No need to distinguish them here; the caller may distinguish
868b2b66 (kx 2024-12-20 16:11:07 +0300 208) # them based on the OS.
868b2b66 (kx 2024-12-20 16:11:07 +0300 209) # On powerpc64 systems, the C compiler may still be generating
868b2b66 (kx 2024-12-20 16:11:07 +0300 210) # 32-bit code. And on powerpc-ibm-aix systems, the C compiler may
868b2b66 (kx 2024-12-20 16:11:07 +0300 211) # be generating 64-bit code.
868b2b66 (kx 2024-12-20 16:11:07 +0300 212) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 213) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 214) [[#if defined __powerpc64__ || defined _ARCH_PPC64
868b2b66 (kx 2024-12-20 16:11:07 +0300 215) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 216) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 217) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 218) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 219) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 220) [# On powerpc64, there are two ABIs on Linux: The AIX compatible
868b2b66 (kx 2024-12-20 16:11:07 +0300 221) # one and the ELFv2 one. The latter defines _CALL_ELF=2.
868b2b66 (kx 2024-12-20 16:11:07 +0300 222) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 223) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 224) [[#if defined _CALL_ELF && _CALL_ELF == 2
868b2b66 (kx 2024-12-20 16:11:07 +0300 225) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 226) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 227) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 228) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 229) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 230) [gl_cv_host_cpu_c_abi=powerpc64-elfv2],
868b2b66 (kx 2024-12-20 16:11:07 +0300 231) [gl_cv_host_cpu_c_abi=powerpc64])
868b2b66 (kx 2024-12-20 16:11:07 +0300 232) ],
868b2b66 (kx 2024-12-20 16:11:07 +0300 233) [gl_cv_host_cpu_c_abi=powerpc])
868b2b66 (kx 2024-12-20 16:11:07 +0300 234) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 235)
868b2b66 (kx 2024-12-20 16:11:07 +0300 236) rs6000 )
868b2b66 (kx 2024-12-20 16:11:07 +0300 237) gl_cv_host_cpu_c_abi=powerpc
868b2b66 (kx 2024-12-20 16:11:07 +0300 238) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 239)
868b2b66 (kx 2024-12-20 16:11:07 +0300 240) riscv32 | riscv64 )
868b2b66 (kx 2024-12-20 16:11:07 +0300 241) # There are 2 architectures (with variants): rv32* and rv64*.
868b2b66 (kx 2024-12-20 16:11:07 +0300 242) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 243) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 244) [[#if __riscv_xlen == 64
868b2b66 (kx 2024-12-20 16:11:07 +0300 245) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 246) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 247) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 248) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 249) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 250) [cpu=riscv64],
868b2b66 (kx 2024-12-20 16:11:07 +0300 251) [cpu=riscv32])
868b2b66 (kx 2024-12-20 16:11:07 +0300 252) # There are 6 ABIs: ilp32, ilp32f, ilp32d, lp64, lp64f, lp64d.
868b2b66 (kx 2024-12-20 16:11:07 +0300 253) # Size of 'long' and 'void *':
868b2b66 (kx 2024-12-20 16:11:07 +0300 254) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 255) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 256) [[#if defined __LP64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 257) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 258) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 259) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 260) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 261) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 262) [main_abi=lp64],
868b2b66 (kx 2024-12-20 16:11:07 +0300 263) [main_abi=ilp32])
868b2b66 (kx 2024-12-20 16:11:07 +0300 264) # Float ABIs:
868b2b66 (kx 2024-12-20 16:11:07 +0300 265) # __riscv_float_abi_double:
868b2b66 (kx 2024-12-20 16:11:07 +0300 266) # 'float' and 'double' are passed in floating-point registers.
868b2b66 (kx 2024-12-20 16:11:07 +0300 267) # __riscv_float_abi_single:
868b2b66 (kx 2024-12-20 16:11:07 +0300 268) # 'float' are passed in floating-point registers.
868b2b66 (kx 2024-12-20 16:11:07 +0300 269) # __riscv_float_abi_soft:
868b2b66 (kx 2024-12-20 16:11:07 +0300 270) # No values are passed in floating-point registers.
868b2b66 (kx 2024-12-20 16:11:07 +0300 271) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 272) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 273) [[#if defined __riscv_float_abi_double
868b2b66 (kx 2024-12-20 16:11:07 +0300 274) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 275) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 276) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 277) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 278) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 279) [float_abi=d],
868b2b66 (kx 2024-12-20 16:11:07 +0300 280) [AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 281) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 282) [[#if defined __riscv_float_abi_single
868b2b66 (kx 2024-12-20 16:11:07 +0300 283) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 284) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 285) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 286) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 287) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 288) [float_abi=f],
868b2b66 (kx 2024-12-20 16:11:07 +0300 289) [float_abi=''])
868b2b66 (kx 2024-12-20 16:11:07 +0300 290) ])
868b2b66 (kx 2024-12-20 16:11:07 +0300 291) gl_cv_host_cpu_c_abi="${cpu}-${main_abi}${float_abi}"
868b2b66 (kx 2024-12-20 16:11:07 +0300 292) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 293)
868b2b66 (kx 2024-12-20 16:11:07 +0300 294) s390* )
868b2b66 (kx 2024-12-20 16:11:07 +0300 295) # On s390x, the C compiler may be generating 64-bit (= s390x) code
868b2b66 (kx 2024-12-20 16:11:07 +0300 296) # or 31-bit (= s390) code.
868b2b66 (kx 2024-12-20 16:11:07 +0300 297) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 298) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 299) [[#if defined __LP64__ || defined __s390x__
868b2b66 (kx 2024-12-20 16:11:07 +0300 300) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 301) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 302) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 303) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 304) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 305) [gl_cv_host_cpu_c_abi=s390x],
868b2b66 (kx 2024-12-20 16:11:07 +0300 306) [gl_cv_host_cpu_c_abi=s390])
868b2b66 (kx 2024-12-20 16:11:07 +0300 307) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 308)
868b2b66 (kx 2024-12-20 16:11:07 +0300 309) sparc | sparc64 )
868b2b66 (kx 2024-12-20 16:11:07 +0300 310) # UltraSPARCs running Linux have `uname -m` = "sparc64", but the
868b2b66 (kx 2024-12-20 16:11:07 +0300 311) # C compiler still generates 32-bit code.
868b2b66 (kx 2024-12-20 16:11:07 +0300 312) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 313) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 314) [[#if defined __sparcv9 || defined __arch64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 315) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 316) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 317) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 318) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 319) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 320) [gl_cv_host_cpu_c_abi=sparc64],
868b2b66 (kx 2024-12-20 16:11:07 +0300 321) [gl_cv_host_cpu_c_abi=sparc])
868b2b66 (kx 2024-12-20 16:11:07 +0300 322) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 323)
868b2b66 (kx 2024-12-20 16:11:07 +0300 324) *)
868b2b66 (kx 2024-12-20 16:11:07 +0300 325) gl_cv_host_cpu_c_abi="$host_cpu"
868b2b66 (kx 2024-12-20 16:11:07 +0300 326) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 327) esac
868b2b66 (kx 2024-12-20 16:11:07 +0300 328) ])
868b2b66 (kx 2024-12-20 16:11:07 +0300 329)
868b2b66 (kx 2024-12-20 16:11:07 +0300 330) dnl In most cases, $HOST_CPU and $HOST_CPU_C_ABI are the same.
868b2b66 (kx 2024-12-20 16:11:07 +0300 331) HOST_CPU=`echo "$gl_cv_host_cpu_c_abi" | sed -e 's/-.*//'`
868b2b66 (kx 2024-12-20 16:11:07 +0300 332) HOST_CPU_C_ABI="$gl_cv_host_cpu_c_abi"
868b2b66 (kx 2024-12-20 16:11:07 +0300 333) AC_SUBST([HOST_CPU])
868b2b66 (kx 2024-12-20 16:11:07 +0300 334) AC_SUBST([HOST_CPU_C_ABI])
868b2b66 (kx 2024-12-20 16:11:07 +0300 335)
868b2b66 (kx 2024-12-20 16:11:07 +0300 336) # This was
868b2b66 (kx 2024-12-20 16:11:07 +0300 337) # AC_DEFINE_UNQUOTED([__${HOST_CPU}__])
868b2b66 (kx 2024-12-20 16:11:07 +0300 338) # AC_DEFINE_UNQUOTED([__${HOST_CPU_C_ABI}__])
868b2b66 (kx 2024-12-20 16:11:07 +0300 339) # earlier, but KAI C++ 3.2d doesn't like this.
868b2b66 (kx 2024-12-20 16:11:07 +0300 340) sed -e 's/-/_/g' >> confdefs.h <<EOF
868b2b66 (kx 2024-12-20 16:11:07 +0300 341) #ifndef __${HOST_CPU}__
868b2b66 (kx 2024-12-20 16:11:07 +0300 342) #define __${HOST_CPU}__ 1
868b2b66 (kx 2024-12-20 16:11:07 +0300 343) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 344) #ifndef __${HOST_CPU_C_ABI}__
868b2b66 (kx 2024-12-20 16:11:07 +0300 345) #define __${HOST_CPU_C_ABI}__ 1
868b2b66 (kx 2024-12-20 16:11:07 +0300 346) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 347) EOF
868b2b66 (kx 2024-12-20 16:11:07 +0300 348) AH_TOP([/* CPU and C ABI indicator */
868b2b66 (kx 2024-12-20 16:11:07 +0300 349) #ifndef __i386__
868b2b66 (kx 2024-12-20 16:11:07 +0300 350) #undef __i386__
868b2b66 (kx 2024-12-20 16:11:07 +0300 351) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 352) #ifndef __x86_64_x32__
868b2b66 (kx 2024-12-20 16:11:07 +0300 353) #undef __x86_64_x32__
868b2b66 (kx 2024-12-20 16:11:07 +0300 354) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 355) #ifndef __x86_64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 356) #undef __x86_64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 357) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 358) #ifndef __alpha__
868b2b66 (kx 2024-12-20 16:11:07 +0300 359) #undef __alpha__
868b2b66 (kx 2024-12-20 16:11:07 +0300 360) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 361) #ifndef __arm__
868b2b66 (kx 2024-12-20 16:11:07 +0300 362) #undef __arm__
868b2b66 (kx 2024-12-20 16:11:07 +0300 363) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 364) #ifndef __armhf__
868b2b66 (kx 2024-12-20 16:11:07 +0300 365) #undef __armhf__
868b2b66 (kx 2024-12-20 16:11:07 +0300 366) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 367) #ifndef __arm64_ilp32__
868b2b66 (kx 2024-12-20 16:11:07 +0300 368) #undef __arm64_ilp32__
868b2b66 (kx 2024-12-20 16:11:07 +0300 369) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 370) #ifndef __arm64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 371) #undef __arm64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 372) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 373) #ifndef __hppa__
868b2b66 (kx 2024-12-20 16:11:07 +0300 374) #undef __hppa__
868b2b66 (kx 2024-12-20 16:11:07 +0300 375) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 376) #ifndef __hppa64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 377) #undef __hppa64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 378) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 379) #ifndef __ia64_ilp32__
868b2b66 (kx 2024-12-20 16:11:07 +0300 380) #undef __ia64_ilp32__
868b2b66 (kx 2024-12-20 16:11:07 +0300 381) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 382) #ifndef __ia64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 383) #undef __ia64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 384) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 385) #ifndef __m68k__
868b2b66 (kx 2024-12-20 16:11:07 +0300 386) #undef __m68k__
868b2b66 (kx 2024-12-20 16:11:07 +0300 387) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 388) #ifndef __mips__
868b2b66 (kx 2024-12-20 16:11:07 +0300 389) #undef __mips__
868b2b66 (kx 2024-12-20 16:11:07 +0300 390) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 391) #ifndef __mipsn32__
868b2b66 (kx 2024-12-20 16:11:07 +0300 392) #undef __mipsn32__
868b2b66 (kx 2024-12-20 16:11:07 +0300 393) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 394) #ifndef __mips64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 395) #undef __mips64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 396) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 397) #ifndef __powerpc__
868b2b66 (kx 2024-12-20 16:11:07 +0300 398) #undef __powerpc__
868b2b66 (kx 2024-12-20 16:11:07 +0300 399) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 400) #ifndef __powerpc64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 401) #undef __powerpc64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 402) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 403) #ifndef __powerpc64_elfv2__
868b2b66 (kx 2024-12-20 16:11:07 +0300 404) #undef __powerpc64_elfv2__
868b2b66 (kx 2024-12-20 16:11:07 +0300 405) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 406) #ifndef __riscv32__
868b2b66 (kx 2024-12-20 16:11:07 +0300 407) #undef __riscv32__
868b2b66 (kx 2024-12-20 16:11:07 +0300 408) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 409) #ifndef __riscv64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 410) #undef __riscv64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 411) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 412) #ifndef __riscv32_ilp32__
868b2b66 (kx 2024-12-20 16:11:07 +0300 413) #undef __riscv32_ilp32__
868b2b66 (kx 2024-12-20 16:11:07 +0300 414) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 415) #ifndef __riscv32_ilp32f__
868b2b66 (kx 2024-12-20 16:11:07 +0300 416) #undef __riscv32_ilp32f__
868b2b66 (kx 2024-12-20 16:11:07 +0300 417) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 418) #ifndef __riscv32_ilp32d__
868b2b66 (kx 2024-12-20 16:11:07 +0300 419) #undef __riscv32_ilp32d__
868b2b66 (kx 2024-12-20 16:11:07 +0300 420) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 421) #ifndef __riscv64_ilp32__
868b2b66 (kx 2024-12-20 16:11:07 +0300 422) #undef __riscv64_ilp32__
868b2b66 (kx 2024-12-20 16:11:07 +0300 423) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 424) #ifndef __riscv64_ilp32f__
868b2b66 (kx 2024-12-20 16:11:07 +0300 425) #undef __riscv64_ilp32f__
868b2b66 (kx 2024-12-20 16:11:07 +0300 426) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 427) #ifndef __riscv64_ilp32d__
868b2b66 (kx 2024-12-20 16:11:07 +0300 428) #undef __riscv64_ilp32d__
868b2b66 (kx 2024-12-20 16:11:07 +0300 429) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 430) #ifndef __riscv64_lp64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 431) #undef __riscv64_lp64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 432) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 433) #ifndef __riscv64_lp64f__
868b2b66 (kx 2024-12-20 16:11:07 +0300 434) #undef __riscv64_lp64f__
868b2b66 (kx 2024-12-20 16:11:07 +0300 435) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 436) #ifndef __riscv64_lp64d__
868b2b66 (kx 2024-12-20 16:11:07 +0300 437) #undef __riscv64_lp64d__
868b2b66 (kx 2024-12-20 16:11:07 +0300 438) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 439) #ifndef __s390__
868b2b66 (kx 2024-12-20 16:11:07 +0300 440) #undef __s390__
868b2b66 (kx 2024-12-20 16:11:07 +0300 441) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 442) #ifndef __s390x__
868b2b66 (kx 2024-12-20 16:11:07 +0300 443) #undef __s390x__
868b2b66 (kx 2024-12-20 16:11:07 +0300 444) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 445) #ifndef __sh__
868b2b66 (kx 2024-12-20 16:11:07 +0300 446) #undef __sh__
868b2b66 (kx 2024-12-20 16:11:07 +0300 447) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 448) #ifndef __sparc__
868b2b66 (kx 2024-12-20 16:11:07 +0300 449) #undef __sparc__
868b2b66 (kx 2024-12-20 16:11:07 +0300 450) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 451) #ifndef __sparc64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 452) #undef __sparc64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 453) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 454) ])
868b2b66 (kx 2024-12-20 16:11:07 +0300 455)
868b2b66 (kx 2024-12-20 16:11:07 +0300 456) ])
868b2b66 (kx 2024-12-20 16:11:07 +0300 457)
868b2b66 (kx 2024-12-20 16:11:07 +0300 458)
868b2b66 (kx 2024-12-20 16:11:07 +0300 459) dnl Sets the HOST_CPU_C_ABI_32BIT variable to 'yes' if the C language ABI
868b2b66 (kx 2024-12-20 16:11:07 +0300 460) dnl (application binary interface) is a 32-bit one, to 'no' if it is a 64-bit
868b2b66 (kx 2024-12-20 16:11:07 +0300 461) dnl one, or to 'unknown' if unknown.
868b2b66 (kx 2024-12-20 16:11:07 +0300 462) dnl This is a simplified variant of gl_HOST_CPU_C_ABI.
868b2b66 (kx 2024-12-20 16:11:07 +0300 463) AC_DEFUN([gl_HOST_CPU_C_ABI_32BIT],
868b2b66 (kx 2024-12-20 16:11:07 +0300 464) [
868b2b66 (kx 2024-12-20 16:11:07 +0300 465) AC_REQUIRE([AC_CANONICAL_HOST])
868b2b66 (kx 2024-12-20 16:11:07 +0300 466) AC_CACHE_CHECK([32-bit host C ABI], [gl_cv_host_cpu_c_abi_32bit],
868b2b66 (kx 2024-12-20 16:11:07 +0300 467) [if test -n "$gl_cv_host_cpu_c_abi"; then
868b2b66 (kx 2024-12-20 16:11:07 +0300 468) case "$gl_cv_host_cpu_c_abi" in
868b2b66 (kx 2024-12-20 16:11:07 +0300 469) i386 | x86_64-x32 | arm | armhf | arm64-ilp32 | hppa | ia64-ilp32 | mips | mipsn32 | powerpc | riscv*-ilp32* | s390 | sparc)
868b2b66 (kx 2024-12-20 16:11:07 +0300 470) gl_cv_host_cpu_c_abi_32bit=yes ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 471) x86_64 | alpha | arm64 | hppa64 | ia64 | mips64 | powerpc64 | powerpc64-elfv2 | riscv*-lp64* | s390x | sparc64 )
868b2b66 (kx 2024-12-20 16:11:07 +0300 472) gl_cv_host_cpu_c_abi_32bit=no ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 473) *)
868b2b66 (kx 2024-12-20 16:11:07 +0300 474) gl_cv_host_cpu_c_abi_32bit=unknown ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 475) esac
868b2b66 (kx 2024-12-20 16:11:07 +0300 476) else
868b2b66 (kx 2024-12-20 16:11:07 +0300 477) case "$host_cpu" in
868b2b66 (kx 2024-12-20 16:11:07 +0300 478)
868b2b66 (kx 2024-12-20 16:11:07 +0300 479) # CPUs that only support a 32-bit ABI.
868b2b66 (kx 2024-12-20 16:11:07 +0300 480) arc \
868b2b66 (kx 2024-12-20 16:11:07 +0300 481) | bfin \
868b2b66 (kx 2024-12-20 16:11:07 +0300 482) | cris* \
868b2b66 (kx 2024-12-20 16:11:07 +0300 483) | csky \
868b2b66 (kx 2024-12-20 16:11:07 +0300 484) | epiphany \
868b2b66 (kx 2024-12-20 16:11:07 +0300 485) | ft32 \
868b2b66 (kx 2024-12-20 16:11:07 +0300 486) | h8300 \
868b2b66 (kx 2024-12-20 16:11:07 +0300 487) | m68k \
868b2b66 (kx 2024-12-20 16:11:07 +0300 488) | microblaze | microblazeel \
868b2b66 (kx 2024-12-20 16:11:07 +0300 489) | nds32 | nds32le | nds32be \
868b2b66 (kx 2024-12-20 16:11:07 +0300 490) | nios2 | nios2eb | nios2el \
868b2b66 (kx 2024-12-20 16:11:07 +0300 491) | or1k* \
868b2b66 (kx 2024-12-20 16:11:07 +0300 492) | or32 \
868b2b66 (kx 2024-12-20 16:11:07 +0300 493) | sh | sh[1234] | sh[1234]e[lb] \
868b2b66 (kx 2024-12-20 16:11:07 +0300 494) | tic6x \
868b2b66 (kx 2024-12-20 16:11:07 +0300 495) | xtensa* )
868b2b66 (kx 2024-12-20 16:11:07 +0300 496) gl_cv_host_cpu_c_abi_32bit=yes
868b2b66 (kx 2024-12-20 16:11:07 +0300 497) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 498)
868b2b66 (kx 2024-12-20 16:11:07 +0300 499) # CPUs that only support a 64-bit ABI.
868b2b66 (kx 2024-12-20 16:11:07 +0300 500) changequote(,)dnl
868b2b66 (kx 2024-12-20 16:11:07 +0300 501) alpha | alphaev[4-8] | alphaev56 | alphapca5[67] | alphaev6[78] \
868b2b66 (kx 2024-12-20 16:11:07 +0300 502) | mmix )
868b2b66 (kx 2024-12-20 16:11:07 +0300 503) changequote([,])dnl
868b2b66 (kx 2024-12-20 16:11:07 +0300 504) gl_cv_host_cpu_c_abi_32bit=no
868b2b66 (kx 2024-12-20 16:11:07 +0300 505) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 506)
868b2b66 (kx 2024-12-20 16:11:07 +0300 507) changequote(,)dnl
868b2b66 (kx 2024-12-20 16:11:07 +0300 508) i[34567]86 )
868b2b66 (kx 2024-12-20 16:11:07 +0300 509) changequote([,])dnl
868b2b66 (kx 2024-12-20 16:11:07 +0300 510) gl_cv_host_cpu_c_abi_32bit=yes
868b2b66 (kx 2024-12-20 16:11:07 +0300 511) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 512)
868b2b66 (kx 2024-12-20 16:11:07 +0300 513) x86_64 )
868b2b66 (kx 2024-12-20 16:11:07 +0300 514) # On x86_64 systems, the C compiler may be generating code in one of
868b2b66 (kx 2024-12-20 16:11:07 +0300 515) # these ABIs:
868b2b66 (kx 2024-12-20 16:11:07 +0300 516) # - 64-bit instruction set, 64-bit pointers, 64-bit 'long': x86_64.
868b2b66 (kx 2024-12-20 16:11:07 +0300 517) # - 64-bit instruction set, 64-bit pointers, 32-bit 'long': x86_64
868b2b66 (kx 2024-12-20 16:11:07 +0300 518) # with native Windows (mingw, MSVC).
868b2b66 (kx 2024-12-20 16:11:07 +0300 519) # - 64-bit instruction set, 32-bit pointers, 32-bit 'long': x86_64-x32.
868b2b66 (kx 2024-12-20 16:11:07 +0300 520) # - 32-bit instruction set, 32-bit pointers, 32-bit 'long': i386.
868b2b66 (kx 2024-12-20 16:11:07 +0300 521) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 522) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 523) [[#if (defined __x86_64__ || defined __amd64__ \
868b2b66 (kx 2024-12-20 16:11:07 +0300 524) || defined _M_X64 || defined _M_AMD64) \
868b2b66 (kx 2024-12-20 16:11:07 +0300 525) && !(defined __ILP32__ || defined _ILP32)
868b2b66 (kx 2024-12-20 16:11:07 +0300 526) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 527) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 528) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 529) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 530) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 531) [gl_cv_host_cpu_c_abi_32bit=no],
868b2b66 (kx 2024-12-20 16:11:07 +0300 532) [gl_cv_host_cpu_c_abi_32bit=yes])
868b2b66 (kx 2024-12-20 16:11:07 +0300 533) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 534)
868b2b66 (kx 2024-12-20 16:11:07 +0300 535) arm* | aarch64 )
868b2b66 (kx 2024-12-20 16:11:07 +0300 536) # Assume arm with EABI.
868b2b66 (kx 2024-12-20 16:11:07 +0300 537) # On arm64 systems, the C compiler may be generating code in one of
868b2b66 (kx 2024-12-20 16:11:07 +0300 538) # these ABIs:
868b2b66 (kx 2024-12-20 16:11:07 +0300 539) # - aarch64 instruction set, 64-bit pointers, 64-bit 'long': arm64.
868b2b66 (kx 2024-12-20 16:11:07 +0300 540) # - aarch64 instruction set, 32-bit pointers, 32-bit 'long': arm64-ilp32.
868b2b66 (kx 2024-12-20 16:11:07 +0300 541) # - 32-bit instruction set, 32-bit pointers, 32-bit 'long': arm or armhf.
868b2b66 (kx 2024-12-20 16:11:07 +0300 542) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 543) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 544) [[#if defined __aarch64__ && !(defined __ILP32__ || defined _ILP32)
868b2b66 (kx 2024-12-20 16:11:07 +0300 545) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 546) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 547) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 548) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 549) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 550) [gl_cv_host_cpu_c_abi_32bit=no],
868b2b66 (kx 2024-12-20 16:11:07 +0300 551) [gl_cv_host_cpu_c_abi_32bit=yes])
868b2b66 (kx 2024-12-20 16:11:07 +0300 552) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 553)
868b2b66 (kx 2024-12-20 16:11:07 +0300 554) hppa1.0 | hppa1.1 | hppa2.0* | hppa64 )
868b2b66 (kx 2024-12-20 16:11:07 +0300 555) # On hppa, the C compiler may be generating 32-bit code or 64-bit
868b2b66 (kx 2024-12-20 16:11:07 +0300 556) # code. In the latter case, it defines _LP64 and __LP64__.
868b2b66 (kx 2024-12-20 16:11:07 +0300 557) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 558) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 559) [[#ifdef __LP64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 560) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 561) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 562) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 563) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 564) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 565) [gl_cv_host_cpu_c_abi_32bit=no],
868b2b66 (kx 2024-12-20 16:11:07 +0300 566) [gl_cv_host_cpu_c_abi_32bit=yes])
868b2b66 (kx 2024-12-20 16:11:07 +0300 567) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 568)
868b2b66 (kx 2024-12-20 16:11:07 +0300 569) ia64* )
868b2b66 (kx 2024-12-20 16:11:07 +0300 570) # On ia64 on HP-UX, the C compiler may be generating 64-bit code or
868b2b66 (kx 2024-12-20 16:11:07 +0300 571) # 32-bit code. In the latter case, it defines _ILP32.
868b2b66 (kx 2024-12-20 16:11:07 +0300 572) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 573) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 574) [[#ifdef _ILP32
868b2b66 (kx 2024-12-20 16:11:07 +0300 575) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 576) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 577) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 578) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 579) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 580) [gl_cv_host_cpu_c_abi_32bit=yes],
868b2b66 (kx 2024-12-20 16:11:07 +0300 581) [gl_cv_host_cpu_c_abi_32bit=no])
868b2b66 (kx 2024-12-20 16:11:07 +0300 582) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 583)
868b2b66 (kx 2024-12-20 16:11:07 +0300 584) mips* )
868b2b66 (kx 2024-12-20 16:11:07 +0300 585) # We should also check for (_MIPS_SZPTR == 64), but gcc keeps this
868b2b66 (kx 2024-12-20 16:11:07 +0300 586) # at 32.
868b2b66 (kx 2024-12-20 16:11:07 +0300 587) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 588) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 589) [[#if defined _MIPS_SZLONG && (_MIPS_SZLONG == 64)
868b2b66 (kx 2024-12-20 16:11:07 +0300 590) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 591) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 592) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 593) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 594) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 595) [gl_cv_host_cpu_c_abi_32bit=no],
868b2b66 (kx 2024-12-20 16:11:07 +0300 596) [gl_cv_host_cpu_c_abi_32bit=yes])
868b2b66 (kx 2024-12-20 16:11:07 +0300 597) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 598)
868b2b66 (kx 2024-12-20 16:11:07 +0300 599) powerpc* )
868b2b66 (kx 2024-12-20 16:11:07 +0300 600) # Different ABIs are in use on AIX vs. Mac OS X vs. Linux,*BSD.
868b2b66 (kx 2024-12-20 16:11:07 +0300 601) # No need to distinguish them here; the caller may distinguish
868b2b66 (kx 2024-12-20 16:11:07 +0300 602) # them based on the OS.
868b2b66 (kx 2024-12-20 16:11:07 +0300 603) # On powerpc64 systems, the C compiler may still be generating
868b2b66 (kx 2024-12-20 16:11:07 +0300 604) # 32-bit code. And on powerpc-ibm-aix systems, the C compiler may
868b2b66 (kx 2024-12-20 16:11:07 +0300 605) # be generating 64-bit code.
868b2b66 (kx 2024-12-20 16:11:07 +0300 606) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 607) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 608) [[#if defined __powerpc64__ || defined _ARCH_PPC64
868b2b66 (kx 2024-12-20 16:11:07 +0300 609) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 610) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 611) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 612) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 613) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 614) [gl_cv_host_cpu_c_abi_32bit=no],
868b2b66 (kx 2024-12-20 16:11:07 +0300 615) [gl_cv_host_cpu_c_abi_32bit=yes])
868b2b66 (kx 2024-12-20 16:11:07 +0300 616) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 617)
868b2b66 (kx 2024-12-20 16:11:07 +0300 618) rs6000 )
868b2b66 (kx 2024-12-20 16:11:07 +0300 619) gl_cv_host_cpu_c_abi_32bit=yes
868b2b66 (kx 2024-12-20 16:11:07 +0300 620) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 621)
868b2b66 (kx 2024-12-20 16:11:07 +0300 622) riscv32 | riscv64 )
868b2b66 (kx 2024-12-20 16:11:07 +0300 623) # There are 6 ABIs: ilp32, ilp32f, ilp32d, lp64, lp64f, lp64d.
868b2b66 (kx 2024-12-20 16:11:07 +0300 624) # Size of 'long' and 'void *':
868b2b66 (kx 2024-12-20 16:11:07 +0300 625) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 626) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 627) [[#if defined __LP64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 628) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 629) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 630) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 631) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 632) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 633) [gl_cv_host_cpu_c_abi_32bit=no],
868b2b66 (kx 2024-12-20 16:11:07 +0300 634) [gl_cv_host_cpu_c_abi_32bit=yes])
868b2b66 (kx 2024-12-20 16:11:07 +0300 635) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 636)
868b2b66 (kx 2024-12-20 16:11:07 +0300 637) s390* )
868b2b66 (kx 2024-12-20 16:11:07 +0300 638) # On s390x, the C compiler may be generating 64-bit (= s390x) code
868b2b66 (kx 2024-12-20 16:11:07 +0300 639) # or 31-bit (= s390) code.
868b2b66 (kx 2024-12-20 16:11:07 +0300 640) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 641) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 642) [[#if defined __LP64__ || defined __s390x__
868b2b66 (kx 2024-12-20 16:11:07 +0300 643) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 644) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 645) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 646) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 647) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 648) [gl_cv_host_cpu_c_abi_32bit=no],
868b2b66 (kx 2024-12-20 16:11:07 +0300 649) [gl_cv_host_cpu_c_abi_32bit=yes])
868b2b66 (kx 2024-12-20 16:11:07 +0300 650) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 651)
868b2b66 (kx 2024-12-20 16:11:07 +0300 652) sparc | sparc64 )
868b2b66 (kx 2024-12-20 16:11:07 +0300 653) # UltraSPARCs running Linux have `uname -m` = "sparc64", but the
868b2b66 (kx 2024-12-20 16:11:07 +0300 654) # C compiler still generates 32-bit code.
868b2b66 (kx 2024-12-20 16:11:07 +0300 655) AC_COMPILE_IFELSE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 656) [AC_LANG_SOURCE(
868b2b66 (kx 2024-12-20 16:11:07 +0300 657) [[#if defined __sparcv9 || defined __arch64__
868b2b66 (kx 2024-12-20 16:11:07 +0300 658) int ok;
868b2b66 (kx 2024-12-20 16:11:07 +0300 659) #else
868b2b66 (kx 2024-12-20 16:11:07 +0300 660) error fail
868b2b66 (kx 2024-12-20 16:11:07 +0300 661) #endif
868b2b66 (kx 2024-12-20 16:11:07 +0300 662) ]])],
868b2b66 (kx 2024-12-20 16:11:07 +0300 663) [gl_cv_host_cpu_c_abi_32bit=no],
868b2b66 (kx 2024-12-20 16:11:07 +0300 664) [gl_cv_host_cpu_c_abi_32bit=yes])
868b2b66 (kx 2024-12-20 16:11:07 +0300 665) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 666)
868b2b66 (kx 2024-12-20 16:11:07 +0300 667) *)
868b2b66 (kx 2024-12-20 16:11:07 +0300 668) gl_cv_host_cpu_c_abi_32bit=unknown
868b2b66 (kx 2024-12-20 16:11:07 +0300 669) ;;
868b2b66 (kx 2024-12-20 16:11:07 +0300 670) esac
868b2b66 (kx 2024-12-20 16:11:07 +0300 671) fi
868b2b66 (kx 2024-12-20 16:11:07 +0300 672) ])
868b2b66 (kx 2024-12-20 16:11:07 +0300 673)
868b2b66 (kx 2024-12-20 16:11:07 +0300 674) HOST_CPU_C_ABI_32BIT="$gl_cv_host_cpu_c_abi_32bit"
868b2b66 (kx 2024-12-20 16:11:07 +0300 675) ])
Math Processor Unit Library
libmpu – library of arithmetic functions for integer, real, and complex numbers of increased digit capacity
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