8438d415c6ec65041c724a736d3508f28a4152a5
[citadel] / libcitadel / configure.in
1 dnl   configuration script for libcitadel
2 dnl   Process this file with autoconf to produce a configure script.
3 dnl
4
5 dnl Ensure that libcitadel is configured with autoconf 2.52 or newer
6 AC_PREREQ(2.52)
7
8 AC_INIT(libcitadel, 2.8.11, http://uncensored.citadel.org)
9
10 AC_CONFIG_SRCDIR(Makefile.in)
11 AC_CONFIG_AUX_DIR(conftools)
12 AC_CONFIG_SRCDIR(tests/Makefile.in)
13
14 dnl
15 dnl Increment LIBREVISION if source code has changed at all
16 dnl
17 dnl If the API has changed, increment LIBCURRENT and set LIBREVISION to 0
18 dnl
19 dnl If the API changes compatibly (i.e. simply adding a new function
20 dnl without changing or removing earlier interfaces), then increment LIBAGE.
21 dnl 
22 dnl If the API changes incompatibly set LIBAGE back to 0
23 dnl
24
25 LIBCURRENT=2
26 LIBREVISION=811
27 LIBAGE=0
28
29 sinclude(conftools/libtool.m4)
30 sinclude(conftools/ac_c_bigendian_cross.m4)
31
32 AC_PROG_LIBTOOL
33
34 AC_SUBST(LIBCURRENT)
35 AC_SUBST(LIBREVISION)
36 AC_SUBST(LIBAGE)
37
38 dnl Checks for programs.
39 AC_PROG_CC
40 AC_PROG_INSTALL
41
42 if test "$GCC" = yes ; then
43     dnl
44     dnl Be careful about adding the -fexceptions option; some versions of
45     dnl GCC don't support it and it causes extra warnings that are only
46     dnl distracting; avoid.
47     dnl
48     OLDCFLAGS="$CFLAGS -Wall -Wmissing-prototypes -Wstrict-prototypes"
49     CFLAGS="$OLDCFLAGS -fexceptions"
50     AC_MSG_CHECKING(whether $CC accepts -fexceptions)
51     AC_TRY_LINK( , ,
52                    AC_MSG_RESULT(yes),
53                    AC_MSG_RESULT(no); CFLAGS="$OLDCFLAGS")
54     CXXFLAGS=`echo "$CFLAGS" | sed 's/ -Wmissing-prototypes -Wstrict-prototypes//'`
55 fi
56
57 dnl Checks for header files.
58 AC_HEADER_STDC
59
60 AC_CHECK_HEADER(sys/mman.h, [CFLAGS="$CFLAGS -D HAVE_MMAP"])
61 AC_ARG_WITH(with_zlib,    [  --with-zlib             use zlib compression if present])
62 dnl Checks for the zlib compression library.
63 if test "x$with_zlib" != xno ; then
64         AC_CHECK_HEADERS(zlib.h,
65                 [AC_CHECK_LIB(z, zlibVersion,
66                         [ok_zlib=yes],,
67         )])
68 fi
69
70 if test "x$ok_zlib" = xyes ; then
71         LIBS="-lz $LIBS"
72         AC_DEFINE(HAVE_ZLIB,[],[whether we have zlib])
73 fi
74
75 AC_CHECK_HEADER(CUnit/CUnit.h, [AC_DEFINE(ENABLE_TESTS, [], [whether we should compile the test-suite])])
76
77 AC_CHECK_HEADER(sys/sendfile.h, [AC_DEFINE(LINUX_SENDFILE, [], [whether we have the linux sendfile api])])
78 dnl TODO: we might need to check for the actual syntax....  
79
80
81 AC_MSG_CHECKING([whether your system knows about splice()]) 
82 AC_TRY_COMPILE([
83 #define _GNU_SOURCE
84 #include <unistd.h>
85 #include <fcntl.h>
86 ],
87 [
88         ssize_t sent, pipesize;
89         int fd, SplicePipe[2];
90         pipesize = splice(fd, NULL, 
91                           SplicePipe[1], NULL, 
92                           1, 
93                           SPLICE_F_MORE | SPLICE_F_MOVE|SPLICE_F_NONBLOCK);
94 ],
95                 [
96                   ok_splice=yes
97                   AC_DEFINE(LINUX_SPLICE, [], [whether we have the linux splice api])
98                   AC_MSG_RESULT([yes])
99                 ],
100                 [ 
101                   ok_splice=no
102                   AC_MSG_RESULT([no])
103                 ]
104 )
105
106
107 AC_CHECK_HEADERS(iconv.h)
108
109
110 dnl Here is the check for a libc integrated iconv
111 AC_ARG_ENABLE(iconv,
112         [  --disable-iconv         do not use iconv charset conversion],
113         ok_iconv=no, ok_iconv=yes)
114
115 AC_MSG_CHECKING(Checking to see if your system supports iconv)
116 AC_TRY_RUN([
117         #include <iconv.h>
118         main() {
119                 iconv_t ic = (iconv_t)(-1) ;
120                 ic = iconv_open("UTF-8", "us-ascii");
121                 iconv_close(ic);
122                 exit(0);
123         }
124  ],
125                 [
126                   ok_iconv=yes
127                   AC_MSG_RESULT([yes])
128                 ],
129                 [ 
130                   ok_iconv=no
131                   AC_MSG_RESULT([no])
132                 ]
133 )
134
135 dnl Check for iconv in external libiconv
136 if test "$ok_iconv" = no; then
137         AC_MSG_CHECKING(Checking for an external libiconv)
138         OLD_LDFLAGS="$LDFLAGS"
139         LDFLAGS="$LDFLAGS -liconv"
140         AC_TRY_RUN([
141                         #include <iconv.h>
142                         main() {
143                                 iconv_t ic = (iconv_t)(-1) ;
144                                 ic = iconv_open("UTF-8", "us-ascii");
145                                 iconv_close(ic);
146                         }
147                 ],
148                         [
149                           ok_iconv=yes
150                           AC_MSG_RESULT([yes])
151                         ],
152                         [ 
153                           ok_iconv=no
154                           LDFLAGS="$OLD_LDFLAGS"
155                           AC_MSG_RESULT([no])
156                         ]
157                 )
158 fi      
159 if test "$ok_iconv" != "no"; then
160         AC_MSG_RESULT(libcitadel will be built with character set conversion.)
161         AC_DEFINE(HAVE_ICONV,[],[whether we have iconv for charset conversion])
162 else
163         AC_MSG_RESULT(libcitadel will be built without character set conversion.)
164 fi
165
166 dnl disable backtrace if we don't want it.
167 AC_ARG_WITH(backtrace, 
168                     [  --with-backtrace          enable backtrace dumps in the syslog],
169                         [ if test "x$withval" != "xno" ; then
170                              CFLAGS="$CFLAGS  -rdynamic "
171                              LDFLAGS="$LDFLAGS  -rdynamic "
172                              AC_CHECK_FUNCS(backtrace)
173                           fi
174                         ]
175 )
176
177
178 AC_ARG_WITH(with_zlib,    [  --with-zlib             use zlib compression if present])
179 dnl Checks for the zlib compression library.
180 if test "x$with_zlib" != xno ; then
181         AC_CHECK_HEADERS(zlib.h,
182                 [AC_CHECK_LIB(z, zlibVersion,
183                         [ok_zlib=yes],,
184         )])
185 fi
186
187 if test "x$ok_zlib" = xyes ; then
188         LIBS="-lz $LIBS"
189         AC_DEFINE(HAVE_ZLIB,[],[whether we have zlib])
190 fi
191
192
193 dnl Checks for typedefs, structures, and compiler characteristics.
194
195 AC_SUBST(LIBS)
196 AC_C_CONST
197 AC_TYPE_SIZE_T
198 AC_CHECK_FUNCS(memmove bcopy)
199
200 AC_CONFIG_FILES(Makefile libcitadel.pc tests/Makefile)
201 AC_CONFIG_HEADER(sysdep.h)
202 AC_OUTPUT
203
204 abs_srcdir="`cd $srcdir && pwd`"
205 abs_builddir="`pwd`"
206 if test "$abs_srcdir" != "$abs_builddir"; then
207   make mkdir-init
208 fi
209 echo 'zlib compression:                ' $ok_zlib
210 echo 'Character set conversion support:' $ok_iconv