Merging upstream version 5.6.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 47 insertions, 198 deletions

diff --git a/m4/host-cpu-c-abi.m4 b/m4/host-cpu-c-abi.m4
index b922324..e860a19 100644
--- a/m4/host-cpu-c-abi.m4
+++ b/m4/host-cpu-c-abi.m4
@@ -1,5 +1,5 @@
-# host-cpu-c-abi.m4 serial 15
-dnl Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# host-cpu-c-abi.m4 serial 17
+dnl Copyright (C) 2002-2024 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.
@@ -461,217 +461,66 @@ 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 one.
 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 "$host_cpu" in
-
-         # CPUs that only support a 32-bit ABI.
-         arc \
-         | bfin \
-         | cris* \
-         | csky \
-         | epiphany \
-         | ft32 \
-         | h8300 \
-         | m68k \
-         | microblaze | microblazeel \
-         | nds32 | nds32le | nds32be \
-         | nios2 | nios2eb | nios2el \
-         | or1k* \
-         | or32 \
-         | sh | sh[1234] | sh[1234]e[lb] \
-         | tic6x \
-         | xtensa* )
-           gl_cv_host_cpu_c_abi_32bit=yes
-           ;;
+    [case "$host_cpu" in
 
-         # 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
-           ;;
+       # 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
-         i[34567]86 )
+       alpha | alphaev[4-8] | alphaev56 | alphapca5[67] | alphaev6[78] \
+       | mmix )
 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])
-           ;;
+         gl_cv_host_cpu_c_abi_32bit=no
+         ;;
 
-         sparc | sparc64 )
-           # UltraSPARCs running Linux have `uname -m` = "sparc64", but the
-           # C compiler still generates 32-bit code.
+       *)
+         if test -n "$gl_cv_host_cpu_c_abi"; then
+           dnl gl_HOST_CPU_C_ABI has already been run. Use its result.
+           case "$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 | aarch64c | 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
+           gl_cv_host_cpu_c_abi_32bit=unknown
+         fi
+         if test $gl_cv_host_cpu_c_abi_32bit = unknown; then
            AC_COMPILE_IFELSE(
              [AC_LANG_SOURCE(
-                [[#if defined __sparcv9 || defined __arch64__
-                   int ok;
-                  #else
-                   error fail
-                  #endif
+                [[int test_pointer_size[sizeof (void *) - 5];
                 ]])],
              [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
+         fi
+         ;;
+     esac
     ])
 
   HOST_CPU_C_ABI_32BIT="$gl_cv_host_cpu_c_abi_32bit"