1GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
2
3AC_CHECK_TOOL(MIG, mig, MISSING)
4if test "x$MIG" = xMISSING; then
5  AC_MSG_ERROR([cannot find required build tool mig])
6fi
7LIBC_CONFIG_VAR([MIG], [$MIG])
8
9if test -n "$sysheaders"; then
10  OLD_CPPFLAGS=$CPPFLAGS
11  CPPFLAGS="$CPPFLAGS $SYSINCLUDES"
12fi
13
14### Sanity checks for Mach header installation
15AC_CHECK_HEADER(mach/mach_types.h,,
16                [AC_MSG_ERROR([cannot find Mach headers])], -)
17AC_CHECK_HEADER(mach/mach_types.defs,, [dnl
18AC_MSG_ERROR([cannot find Mach .defs files])], -)
19
20dnl
21dnl mach_TYPE_CHECK(foo_t, bar_t)
22dnl
23dnl Check if foo_t is defined by <mach/mach_types.h>.
24dnl If not, compile with -Dfoo_t=bar_t.
25dnl
26AC_DEFUN([mach_TYPE_CHECK], [dnl
27AC_CACHE_CHECK(for $1 in mach/mach_types.h, libc_cv_mach_$1,
28AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <mach/mach_types.h>]], [[extern $1 foo;]])],
29[libc_cv_mach_$1=$1], [libc_cv_mach_$1=$2]))
30if test [$]libc_cv_mach_$1 != $1; then
31  DEFINES="$DEFINES -D$1=$2"
32fi])
33
34dnl
35dnl OSF Mach has renamed these typedefs for some reason.
36dnl
37mach_TYPE_CHECK(task_t, task_port_t)
38mach_TYPE_CHECK(thread_t, thread_port_t)
39
40dnl
41dnl The creation_time field is a GNU Mach addition the other variants lack.
42dnl
43AC_CACHE_CHECK(for creation_time in task_basic_info,
44	       libc_cv_mach_task_creation_time, [dnl
45AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <mach/task_info.h>]], [[
46extern struct task_basic_info *i;
47long s = i->creation_time.seconds;
48]])], [libc_cv_mach_task_creation_time=yes], [libc_cv_mach_task_creation_time=no])])
49if test $libc_cv_mach_task_creation_time = no; then
50  AC_MSG_ERROR([you need Mach headers supporting task_info.creation_time])
51fi
52
53dnl
54dnl The Darwin variant no longer has <mach/mach.defs>
55dnl but instead has several constituent .defs files.
56dnl In this scenario we will presume there is a <mach/mach_interface.h>
57dnl that contains an #include for each constituent header file,
58dnl but we don't do a check for that here because in a bare
59dnl environment the compile against those headers will fail.
60dnl
61mach_interface_list=
62for ifc in mach mach4 gnumach \
63	   clock clock_priv host_priv host_security ledger lock_set \
64	   processor processor_set task task_notify thread_act vm_map \
65	   memory_object memory_object_default default_pager \
66	   i386/mach_i386 \
67	   ; do
68  AC_CHECK_HEADER(mach/${ifc}.defs, [dnl
69  mach_interface_list="$mach_interface_list $ifc"],, -)
70done
71if test "x$mach_interface_list" = x; then
72  AC_MSG_ERROR([what manner of Mach is this?])
73fi
74
75AC_CACHE_CHECK(for host_page_size in mach_host.defs,
76	       libc_cv_mach_host_page_size, [dnl
77AC_EGREP_HEADER(host_page_size, mach/mach_host.defs,
78		libc_cv_mach_host_page_size=yes,
79		libc_cv_mach_host_page_size=no)])
80if test $libc_cv_mach_host_page_size = yes; then
81  AC_DEFINE([HAVE_HOST_PAGE_SIZE])
82fi
83
84AC_CHECK_HEADER(mach/machine/ndr_def.h, [dnl
85  DEFINES="$DEFINES -DNDR_DEF_HEADER='<mach/machine/ndr_def.h>'"], [dnl
86AC_CHECK_HEADER(machine/ndr_def.h, [dnl
87  DEFINES="$DEFINES -DNDR_DEF_HEADER='<machine/ndr_def.h>'"],, -)], -)
88
89AC_CACHE_CHECK(for i386_io_perm_modify in mach_i386.defs,
90	       libc_cv_mach_i386_ioports, [dnl
91AC_EGREP_HEADER(i386_io_perm_modify, mach/i386/mach_i386.defs,
92		libc_cv_mach_i386_ioports=yes,
93		libc_cv_mach_i386_ioports=no)])
94if test $libc_cv_mach_i386_ioports = yes; then
95  AC_DEFINE([HAVE_I386_IO_PERM_MODIFY])
96fi
97
98AC_CACHE_CHECK(for i386_set_gdt in mach_i386.defs,
99	       libc_cv_mach_i386_gdt, [dnl
100AC_EGREP_HEADER(i386_set_gdt, mach/i386/mach_i386.defs,
101		libc_cv_mach_i386_gdt=yes,
102		libc_cv_mach_i386_gdt=no)])
103if test $libc_cv_mach_i386_gdt = yes; then
104  AC_DEFINE([HAVE_I386_SET_GDT])
105fi
106
107dnl Swiped from hurd/aclocal.m4
108AC_DEFUN([hurd_MIG_RETCODE], [dnl
109# See if mig groks `retcode'.
110AC_CACHE_CHECK(whether $MIG supports the retcode keyword, hurd_cv_mig_retcode,
111[cat > conftest.defs <<\EOF
112#include <mach/std_types.defs>
113#include <mach/mach_types.defs>
114subsystem foobar 1000;
115type reply_port_t = polymorphic | MACH_MSG_TYPE_PORT_SEND_ONCE
116	ctype: mach_port_t;
117simpleroutine foobar_reply (
118	reply_port: reply_port_t;
119	err: kern_return_t, RetCode);
120EOF
121if AC_TRY_COMMAND([CC="${CC}" ${MIG-false} -n conftest.defs 1>&AS_MESSAGE_LOG_FD]); then
122  hurd_cv_mig_retcode=yes
123else
124  hurd_cv_mig_retcode=no
125fi
126rm -f conftest*])
127if test $hurd_cv_mig_retcode = yes; then
128  AC_DEFINE(HAVE_MIG_RETCODE)
129fi])
130
131hurd_MIG_RETCODE
132
133if test -n "$sysheaders"; then
134  CPPFLAGS=$OLD_CPPFLAGS
135fi
136