update lib/replace from samba4
[vlendec/samba-autobuild/.git] / ctdb / lib / replace / libreplace_cc.m4
1
2 AC_DEFUN_ONCE(AC__LIBREPLACE_ONLY_CC_CHECKS_START,
3 [
4 echo "LIBREPLACE_CC_CHECKS: START"
5 ])
6
7 AC_DEFUN_ONCE(AC__LIBREPLACE_ONLY_CC_CHECKS_END,
8 [
9 echo "LIBREPLACE_CC_CHECKS: END"
10 ])
11
12 dnl
13 dnl
14 dnl AC_LIBREPLACE_CC_CHECKS
15 dnl
16 dnl Note: we need to use m4_define instead of AC_DEFUN because
17 dnl       of the ordering of tests
18 dnl       
19 dnl 
20 m4_define(AC_LIBREPLACE_CC_CHECKS,
21 [
22 AC__LIBREPLACE_ONLY_CC_CHECKS_START
23
24 dnl stop the C89 attempt by autoconf - if autoconf detects -Ae it will enable it
25 dnl which conflicts with C99 on HPUX
26 ac_cv_prog_cc_Ae=no
27
28 savedCFLAGS=$CFLAGS
29 AC_PROG_CC
30 CFLAGS=$savedCFLAGS
31
32 dnl don't try for C99 if we are using gcc, as otherwise we 
33 dnl lose immediate structure constants
34 if test x"$GCC" != x"yes" ; then
35 AC_PROG_CC_C99
36 fi
37
38 if test x"$GCC" = x"yes" ; then
39         AC_MSG_CHECKING([for version of gcc])
40         GCC_VERSION=`$CC -dumpversion`
41         AC_MSG_RESULT(${GCC_VERSION})
42 fi
43 AC_USE_SYSTEM_EXTENSIONS
44 AC_C_BIGENDIAN
45 AC_C_INLINE
46 LIBREPLACE_C99_STRUCT_INIT([],[AC_MSG_WARN([c99 structure initializer are not supported])])
47
48 AC_PROG_INSTALL
49
50 AC_ISC_POSIX
51 AC_EXTENSION_FLAG(_XOPEN_SOURCE_EXTENDED)
52 AC_EXTENSION_FLAG(_OSF_SOURCE)
53
54 AC_SYS_LARGEFILE
55
56 dnl Add #include for broken IRIX header files
57 case "$host_os" in
58         *irix6*) AC_ADD_INCLUDE(<standards.h>)
59                 ;;
60         *hpux*)
61                 # mmap on HPUX is completely broken...
62                 AC_DEFINE(MMAP_BLACKLIST, 1, [Whether MMAP is broken])
63                 if test "`uname -r`" = "B.11.00" -o "`uname -r`" = "B.11.11"; then
64                         AC_MSG_WARN([Enabling HPUX 11.00/11.11 header bug workaround])
65                         CFLAGS="$CFLAGS -Dpread=pread64 -Dpwrite=pwrite64"
66                 fi
67                 if test "`uname -r`" = "B.11.23"; then
68                         AC_MSG_WARN([Enabling HPUX 11.23 machine/sys/getppdp.h bug workaround])
69                         CFLAGS="$CFLAGS -D_MACHINE_SYS_GETPPDP_INCLUDED"
70                 fi
71                 ;;
72         *aix*)
73                 AC_DEFINE(BROKEN_STRNDUP, 1, [Whether strndup is broken])
74                 AC_DEFINE(BROKEN_STRNLEN, 1, [Whether strnlen is broken])
75                 if test "${GCC}" != "yes"; then
76                         ## for funky AIX compiler using strncpy()
77                         CFLAGS="$CFLAGS -D_LINUX_SOURCE_COMPAT -qmaxmem=32000"
78                 fi
79                 ;;
80         #
81         # VOS may need to have POSIX support and System V compatibility enabled.
82         #
83         *vos*)
84                 case "$CFLAGS" in
85                         *-D_POSIX_C_SOURCE*);;
86                         *)
87                                 CFLAGS="$CFLAGS -D_POSIX_C_SOURCE=200112L"
88                                 AC_DEFINE(_POSIX_C_SOURCE, 200112L, [Whether to enable POSIX support])
89                                 ;;
90                 esac
91                 case "$CFLAGS" in
92                         *-D_SYSV*|*-D_SVID_SOURCE*);;
93                         *)
94                                 CFLAGS="$CFLAGS -D_SYSV"
95                                 AC_DEFINE(_SYSV, 1, [Whether to enable System V compatibility])
96                                 ;;
97                 esac
98                 ;;
99 esac
100
101
102
103 AC_CHECK_HEADERS([standards.h])
104
105 # Solaris needs HAVE_LONG_LONG defined
106 AC_CHECK_TYPES(long long)
107
108 AC_CHECK_TYPE(uint_t, unsigned int)
109 AC_CHECK_TYPE(int8_t, char)
110 AC_CHECK_TYPE(uint8_t, unsigned char)
111 AC_CHECK_TYPE(int16_t, short)
112 AC_CHECK_TYPE(uint16_t, unsigned short)
113 AC_CHECK_TYPE(int32_t, long)
114 AC_CHECK_TYPE(uint32_t, unsigned long)
115 AC_CHECK_TYPE(int64_t, long long)
116 AC_CHECK_TYPE(uint64_t, unsigned long long)
117
118 AC_CHECK_TYPE(size_t, unsigned int)
119 AC_CHECK_TYPE(ssize_t, int)
120
121 AC_CHECK_SIZEOF(int)
122 AC_CHECK_SIZEOF(char)
123 AC_CHECK_SIZEOF(short)
124 AC_CHECK_SIZEOF(long)
125 AC_CHECK_SIZEOF(long long)
126
127 AC_CHECK_SIZEOF(off_t)
128 AC_CHECK_SIZEOF(size_t)
129 AC_CHECK_SIZEOF(ssize_t)
130
131 AC_CHECK_TYPE(intptr_t, unsigned long long)
132 AC_CHECK_TYPE(ptrdiff_t, unsigned long long)
133
134 if test x"$ac_cv_type_long_long" != x"yes";then
135         AC_MSG_ERROR([LIBREPLACE needs type 'long long'])
136 fi
137 if test $ac_cv_sizeof_long_long -lt 8;then
138         AC_MSG_ERROR([LIBREPLACE needs sizeof(long long) >= 8])
139 fi
140
141 ############################################
142 # check if the compiler can do immediate structures
143 AC_SUBST(libreplace_cv_immediate_structures)
144 AC_CACHE_CHECK([for immediate structures],libreplace_cv_immediate_structures,[
145         AC_TRY_COMPILE([
146                 #include <stdio.h>
147         ],[
148                 typedef struct {unsigned x;} FOOBAR;
149                 #define X_FOOBAR(x) ((FOOBAR) { x })
150                 #define FOO_ONE X_FOOBAR(1)
151                 FOOBAR f = FOO_ONE;   
152                 static const struct {
153                         FOOBAR y; 
154                 } f2[] = {
155                         {FOO_ONE}
156                 };   
157         ],
158         libreplace_cv_immediate_structures=yes,
159         libreplace_cv_immediate_structures=no,
160         libreplace_cv_immediate_structures=cross)
161 ])
162 if test x"$libreplace_cv_immediate_structures" = x"yes"; then
163         AC_DEFINE(HAVE_IMMEDIATE_STRUCTURES,1,[Whether the compiler supports immediate structures])
164 fi
165
166 AC__LIBREPLACE_ONLY_CC_CHECKS_END
167 ]) dnl end AC_LIBREPLACE_CC_CHECKS