summaryrefslogtreecommitdiff
path: root/gnulib-m4/host-cpu-c-abi.m4
diff options
context:
space:
mode:
Diffstat (limited to 'gnulib-m4/host-cpu-c-abi.m4')
-rw-r--r--gnulib-m4/host-cpu-c-abi.m4227
1 files changed, 223 insertions, 4 deletions
diff --git a/gnulib-m4/host-cpu-c-abi.m4 b/gnulib-m4/host-cpu-c-abi.m4
index 3fac6f7..6d1e457 100644
--- a/gnulib-m4/host-cpu-c-abi.m4
+++ b/gnulib-m4/host-cpu-c-abi.m4
@@ -1,5 +1,5 @@
-# host-cpu-c-abi.m4 serial 10
-dnl Copyright (C) 2002-2018 Free Software Foundation, Inc.
+# host-cpu-c-abi.m4 serial 14
+dnl Copyright (C) 2002-2022 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
@@ -55,7 +55,7 @@ AC_DEFUN([gl_HOST_CPU_C_ABI],
[case "$host_cpu" in
changequote(,)dnl
- i[4567]86 )
+ i[34567]86 )
changequote([,])dnl
gl_cv_host_cpu_c_abi=i386
;;
@@ -211,7 +211,7 @@ changequote([,])dnl
# be generating 64-bit code.
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE(
- [[#if defined __powerpc64__ || defined _ARCH_PPC64
+ [[#if defined __powerpc64__ || defined __LP64__
int ok;
#else
error fail
@@ -454,3 +454,222 @@ EOF
])
])
+
+
+dnl Sets the HOST_CPU_C_ABI_32BIT variable to 'yes' if the C language ABI
+dnl (application binary interface) is a 32-bit one, to 'no' if it is a 64-bit
+dnl one, or to 'unknown' if unknown.
+dnl This is a simplified variant of gl_HOST_CPU_C_ABI.
+AC_DEFUN([gl_HOST_CPU_C_ABI_32BIT],
+[
+ AC_REQUIRE([AC_CANONICAL_HOST])
+ AC_CACHE_CHECK([32-bit host C ABI], [gl_cv_host_cpu_c_abi_32bit],
+ [if test -n "$gl_cv_host_cpu_c_abi"; then
+ case "$gl_cv_host_cpu_c_abi" in
+ i386 | x86_64-x32 | arm | armhf | arm64-ilp32 | hppa | ia64-ilp32 | mips | mipsn32 | powerpc | riscv*-ilp32* | s390 | sparc)
+ gl_cv_host_cpu_c_abi_32bit=yes ;;
+ x86_64 | alpha | arm64 | hppa64 | ia64 | mips64 | powerpc64 | powerpc64-elfv2 | riscv*-lp64* | s390x | sparc64 )
+ gl_cv_host_cpu_c_abi_32bit=no ;;
+ *)
+ gl_cv_host_cpu_c_abi_32bit=unknown ;;
+ esac
+ else
+ case "$host_cpu" in
+
+ # CPUs that only support a 32-bit ABI.
+ arc \
+ | bfin \
+ | cris* \
+ | csky \
+ | epiphany \
+ | ft32 \
+ | h8300 \
+ | m68k \
+ | microblaze | microblazeel \
+ | nds32 | nds32le | nds32be \
+ | nios2 | nios2eb | nios2el \
+ | or1k* \
+ | or32 \
+ | sh | sh[1234] | sh[1234]e[lb] \
+ | tic6x \
+ | xtensa* )
+ gl_cv_host_cpu_c_abi_32bit=yes
+ ;;
+
+ # CPUs that only support a 64-bit ABI.
+changequote(,)dnl
+ alpha | alphaev[4-8] | alphaev56 | alphapca5[67] | alphaev6[78] \
+ | mmix )
+changequote([,])dnl
+ gl_cv_host_cpu_c_abi_32bit=no
+ ;;
+
+changequote(,)dnl
+ i[34567]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 __LP64__
+ 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=unknown
+ ;;
+ esac
+ fi
+ ])
+
+ HOST_CPU_C_ABI_32BIT="$gl_cv_host_cpu_c_abi_32bit"
+])
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-03 08:19:23 +0000