a26dee498e93f03f0cada2715839ab0200b16f1d
[ira/wip.git] / 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_N_DEFINE(_XOPEN_SOURCE_EXTENDED)
52
53 AC_SYS_LARGEFILE
54
55 dnl Add #include for broken IRIX header files
56 case "$host_os" in
57         *irix6*) AC_ADD_INCLUDE(<standards.h>)
58                 ;;
59         *hpux*)
60                 # mmap on HPUX is completely broken...
61                 AC_DEFINE(MMAP_BLACKLIST, 1, [Whether MMAP is broken])
62                 if test "`uname -r`" = "B.11.00" -o "`uname -r`" = "B.11.11"; then
63                         AC_MSG_WARN([Enabling HPUX 11.00/11.11 header bug workaround])
64                         CFLAGS="$CFLAGS -Dpread=pread64 -Dpwrite=pwrite64"
65                 fi
66                 if test "`uname -r`" = "B.11.23"; then
67                         AC_MSG_WARN([Enabling HPUX 11.23 machine/sys/getppdp.h bug workaround])
68                         CFLAGS="$CFLAGS -D_MACHINE_SYS_GETPPDP_INCLUDED"
69                 fi
70                 ;;
71         *aix*)
72                 AC_DEFINE(BROKEN_STRNDUP, 1, [Whether strndup is broken])
73                 AC_DEFINE(BROKEN_STRNLEN, 1, [Whether strnlen is broken])
74                 if test "${GCC}" != "yes"; then
75                         ## for funky AIX compiler using strncpy()
76                         CFLAGS="$CFLAGS -D_LINUX_SOURCE_COMPAT -qmaxmem=32000"
77                 fi
78                 ;;
79         *osf*)
80                 # this brings in socklen_t
81                 AC_N_DEFINE(_XOPEN_SOURCE,600)
82                 AC_N_DEFINE(_OSF_SOURCE)
83                 ;;
84         #
85         # VOS may need to have POSIX support and System V compatibility enabled.
86         #
87         *vos*)
88                 case "$CFLAGS" in
89                         *-D_POSIX_C_SOURCE*);;
90                         *)
91                                 CFLAGS="$CFLAGS -D_POSIX_C_SOURCE=200112L"
92                                 AC_DEFINE(_POSIX_C_SOURCE, 200112L, [Whether to enable POSIX support])
93                                 ;;
94                 esac
95                 case "$CFLAGS" in
96                         *-D_SYSV*|*-D_SVID_SOURCE*);;
97                         *)
98                                 CFLAGS="$CFLAGS -D_SYSV"
99                                 AC_DEFINE(_SYSV, 1, [Whether to enable System V compatibility])
100                                 ;;
101                 esac
102                 ;;
103 esac
104
105
106
107 AC_CHECK_HEADERS([standards.h])
108
109 # Solaris needs HAVE_LONG_LONG defined
110 AC_CHECK_TYPES(long long)
111
112 AC_CHECK_SIZEOF(int)
113 AC_CHECK_SIZEOF(char)
114 AC_CHECK_SIZEOF(short)
115 AC_CHECK_SIZEOF(long)
116 AC_CHECK_SIZEOF(long long)
117
118 AC_CHECK_TYPE(uint_t, unsigned int)
119 AC_CHECK_TYPE(int8_t, char)
120 AC_CHECK_TYPE(uint8_t, unsigned char)
121 AC_CHECK_TYPE(int16_t, short)
122 AC_CHECK_TYPE(uint16_t, unsigned short)
123
124 if test $ac_cv_sizeof_int -eq 4 ; then
125 AC_CHECK_TYPE(int32_t, int)
126 AC_CHECK_TYPE(uint32_t, unsigned int)
127 elif test $ac_cv_size_long -eq 4 ; then
128 AC_CHECK_TYPE(int32_t, long)
129 AC_CHECK_TYPE(uint32_t, unsigned long)
130 else
131 AC_MSG_ERROR([LIBREPLACE no 32-bit type found])
132 fi
133
134 AC_CHECK_TYPE(int64_t, long long)
135 AC_CHECK_TYPE(uint64_t, unsigned long long)
136
137 AC_CHECK_TYPE(size_t, unsigned int)
138 AC_CHECK_TYPE(ssize_t, int)
139
140 AC_CHECK_SIZEOF(off_t)
141 AC_CHECK_SIZEOF(size_t)
142 AC_CHECK_SIZEOF(ssize_t)
143
144 AC_CHECK_TYPES([intptr_t, uintptr_t, ptrdiff_t])
145
146 if test x"$ac_cv_type_long_long" != x"yes";then
147         AC_MSG_ERROR([LIBREPLACE needs type 'long long'])
148 fi
149 if test $ac_cv_sizeof_long_long -lt 8;then
150         AC_MSG_ERROR([LIBREPLACE needs sizeof(long long) >= 8])
151 fi
152
153 ############################################
154 # check if the compiler can do immediate structures
155 AC_SUBST(libreplace_cv_immediate_structures)
156 AC_CACHE_CHECK([for immediate structures],libreplace_cv_immediate_structures,[
157         AC_TRY_COMPILE([
158                 #include <stdio.h>
159         ],[
160                 typedef struct {unsigned x;} FOOBAR;
161                 #define X_FOOBAR(x) ((FOOBAR) { x })
162                 #define FOO_ONE X_FOOBAR(1)
163                 FOOBAR f = FOO_ONE;   
164                 static const struct {
165                         FOOBAR y; 
166                 } f2[] = {
167                         {FOO_ONE}
168                 };
169                 static const FOOBAR f3[] = {FOO_ONE};
170         ],
171         libreplace_cv_immediate_structures=yes,
172         libreplace_cv_immediate_structures=no,
173         libreplace_cv_immediate_structures=cross)
174 ])
175 if test x"$libreplace_cv_immediate_structures" = x"yes"; then
176         AC_DEFINE(HAVE_IMMEDIATE_STRUCTURES,1,[Whether the compiler supports immediate structures])
177 fi
178
179 AC__LIBREPLACE_ONLY_CC_CHECKS_END
180 ]) dnl end AC_LIBREPLACE_CC_CHECKS