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3ca9f43d10
We already did the same change for Hurd (https://git.savannah.gnu.org/cgit/hurd/hurd.git/commit/?id=ef5924402864ef049f40a39e73967628583bc1a4) Due to MiG requiring the subsystem to be defined early in order to know the size of a port, this was causing a division by zero error during ./configure. We could have just move subsystem to the top of the snippet, however it is simpler to just remove the check given that we have no plans to use some other MiG anyway. HAVE_MIG_RETCODE is removed completely since this will be a no-op either way (compiling against old Hurd headers will work the same, new Hurd headers will result in the same stubs since retcode is a no-op). Message-Id: <ZFspor91aoMwbh9T@jupiter.tail36e24.ts.net>
107 lines
3.6 KiB
Text
107 lines
3.6 KiB
Text
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
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AC_CHECK_TOOL(MIG, mig, MISSING)
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if test "x$MIG" = xMISSING; then
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AC_MSG_ERROR([cannot find required build tool mig])
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fi
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LIBC_CONFIG_VAR([MIG], [$MIG])
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OLD_CPPFLAGS=$CPPFLAGS
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if test -n "$sysheaders"; then
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CPPFLAGS="$CPPFLAGS $SYSINCLUDES"
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fi
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### Sanity checks for Mach header installation
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CPPFLAGS="$CPPFLAGS -ffreestanding"
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AC_CHECK_HEADER(mach/mach_types.h,,
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[AC_MSG_ERROR([cannot find Mach headers])], -)
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AC_CHECK_HEADER(mach/mach_types.defs,, [dnl
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AC_MSG_ERROR([cannot find Mach .defs files])], -)
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dnl
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dnl mach_TYPE_CHECK(foo_t, bar_t)
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dnl
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dnl Check if foo_t is defined by <mach/mach_types.h>.
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dnl If not, compile with -Dfoo_t=bar_t.
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dnl
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AC_DEFUN([mach_TYPE_CHECK], [dnl
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AC_CACHE_CHECK(for $1 in mach/mach_types.h, libc_cv_mach_$1,
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <mach/mach_types.h>]], [[extern $1 foo;]])],
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[libc_cv_mach_$1=$1], [libc_cv_mach_$1=$2]))
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if test [$]libc_cv_mach_$1 != $1; then
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DEFINES="$DEFINES -D$1=$2"
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fi])
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dnl
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dnl OSF Mach has renamed these typedefs for some reason.
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dnl
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mach_TYPE_CHECK(task_t, task_port_t)
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mach_TYPE_CHECK(thread_t, thread_port_t)
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dnl
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dnl The creation_time field is a GNU Mach addition the other variants lack.
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dnl
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AC_CACHE_CHECK(for creation_time in task_basic_info,
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libc_cv_mach_task_creation_time, [dnl
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <mach/task_info.h>]], [[
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extern struct task_basic_info *i;
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long s = i->creation_time.seconds;
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]])], [libc_cv_mach_task_creation_time=yes], [libc_cv_mach_task_creation_time=no])])
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if test $libc_cv_mach_task_creation_time = no; then
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AC_MSG_ERROR([you need Mach headers supporting task_info.creation_time])
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fi
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dnl
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dnl The Darwin variant no longer has <mach/mach.defs>
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dnl but instead has several constituent .defs files.
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dnl In this scenario we will presume there is a <mach/mach_interface.h>
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dnl that contains an #include for each constituent header file,
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dnl but we don't do a check for that here because in a bare
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dnl environment the compile against those headers will fail.
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dnl
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mach_interface_list=
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for ifc in mach mach4 gnumach \
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clock clock_priv host_priv host_security ledger lock_set \
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processor processor_set task task_notify thread_act vm_map \
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memory_object memory_object_default machine/mach_i386 \
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; do
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AC_CHECK_HEADER(mach/${ifc}.defs, [dnl
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mach_interface_list="$mach_interface_list $ifc"],, -)
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done
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if test "x$mach_interface_list" = x; then
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AC_MSG_ERROR([what manner of Mach is this?])
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fi
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AC_CACHE_CHECK(for host_page_size in mach_host.defs,
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libc_cv_mach_host_page_size, [dnl
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AC_EGREP_HEADER(host_page_size, mach/mach_host.defs,
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libc_cv_mach_host_page_size=yes,
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libc_cv_mach_host_page_size=no)])
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if test $libc_cv_mach_host_page_size = yes; then
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AC_DEFINE([HAVE_HOST_PAGE_SIZE])
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fi
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AC_CHECK_HEADER(mach/machine/ndr_def.h, [dnl
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DEFINES="$DEFINES -DNDR_DEF_HEADER='<mach/machine/ndr_def.h>'"], [dnl
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AC_CHECK_HEADER(machine/ndr_def.h, [dnl
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DEFINES="$DEFINES -DNDR_DEF_HEADER='<machine/ndr_def.h>'"],, -)], -)
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AC_CACHE_CHECK(for i386_io_perm_modify in mach_i386.defs,
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libc_cv_mach_i386_ioports, [dnl
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AC_EGREP_HEADER(i386_io_perm_modify, mach/machine/mach_i386.defs,
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libc_cv_mach_i386_ioports=yes,
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libc_cv_mach_i386_ioports=no)])
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if test $libc_cv_mach_i386_ioports = yes; then
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AC_DEFINE([HAVE_I386_IO_PERM_MODIFY])
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fi
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AC_CACHE_CHECK(for i386_set_gdt in mach_i386.defs,
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libc_cv_mach_i386_gdt, [dnl
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AC_EGREP_HEADER(i386_set_gdt, mach/machine/mach_i386.defs,
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libc_cv_mach_i386_gdt=yes,
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libc_cv_mach_i386_gdt=no)])
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if test $libc_cv_mach_i386_gdt = yes; then
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AC_DEFINE([HAVE_I386_SET_GDT])
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fi
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CPPFLAGS=$OLD_CPPFLAGS
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