d61a071c30f964bb94d233e542b727e83c9beb64
[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, 8.00, 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=1
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 $LIBS"
72         AC_DEFINE(HAVE_ZLIB,[],[whether we have zlib])
73 fi
74
75 AC_CHECK_HEADER(CUnit/CUnit.h, [AC_DEFINE(ENABLE_TESTS, [], [whether we should compile the test-suite])])
76
77 AC_CHECK_HEADER(sys/sendfile.h, [AC_DEFINE(LINUX_SENDFILE, [], [whether we have the linux sendfile api])])
78 dnl TODO: we might need to check for the actual syntax....  
79
80
81 AC_CHECK_HEADERS(iconv.h)
82
83
84 dnl Here is the check for a libc integrated iconv
85 AC_ARG_ENABLE(iconv,
86         [  --disable-iconv         do not use iconv charset conversion],
87         ok_iconv=no, ok_iconv=yes)
88
89 AC_MSG_CHECKING(Checking to see if your system supports iconv)
90 AC_TRY_RUN([
91         #include <iconv.h>
92         main() {
93                 iconv_t ic = (iconv_t)(-1) ;
94                 ic = iconv_open("UTF-8", "us-ascii");
95                 iconv_close(ic);
96                 exit(0);
97         }
98  ],
99                 [
100                   ok_iconv=yes
101                   AC_MSG_RESULT([yes])
102                 ],
103                 [ 
104                   ok_iconv=no
105                   AC_MSG_RESULT([no])
106                 ]
107 )
108
109 dnl Check for iconv in external libiconv
110 if test "$ok_iconv" = no; then
111         AC_MSG_CHECKING(Checking for an external libiconv)
112         OLD_LDFLAGS="$LDFLAGS"
113         LDFLAGS="$LDFLAGS -liconv"
114         AC_TRY_RUN([
115                         #include <iconv.h>
116                         main() {
117                                 iconv_t ic = (iconv_t)(-1) ;
118                                 ic = iconv_open("UTF-8", "us-ascii");
119                                 iconv_close(ic);
120                         }
121                 ],
122                         [
123                           ok_iconv=yes
124                           AC_MSG_RESULT([yes])
125                         ],
126                         [ 
127                           ok_iconv=no
128                           LDFLAGS="$OLD_LDFLAGS"
129                           AC_MSG_RESULT([no])
130                         ]
131                 )
132 fi      
133 if test "$ok_iconv" != "no"; then
134         AC_MSG_RESULT(libcitadel will be built with character set conversion.)
135         AC_DEFINE(HAVE_ICONV,[],[whether we have iconv for charset conversion])
136 else
137         AC_MSG_RESULT(libcitadel will be built without character set conversion.)
138 fi
139
140 dnl disable backtrace if we don't want it.
141 AC_ARG_WITH(backtrace, 
142                     [  --with-backtrace          enable backtrace dumps in the syslog],
143                         [ if test "x$withval" != "xno" ; then
144                              CFLAGS="$CFLAGS  -rdynamic "
145                              LDFLAGS="$LDFLAGS  -rdynamic "
146                              AC_CHECK_FUNCS(backtrace)
147                           fi
148                         ]
149 )
150
151
152 AC_ARG_WITH(with_zlib,    [  --with-zlib             use zlib compression if present])
153 dnl Checks for the zlib compression library.
154 if test "x$with_zlib" != xno ; then
155         AC_CHECK_HEADERS(zlib.h,
156                 [AC_CHECK_LIB(z, zlibVersion,
157                         [ok_zlib=yes],,
158         )])
159 fi
160
161 if test "x$ok_zlib" = xyes ; then
162         LIBS="-lz $LIBS"
163         AC_DEFINE(HAVE_ZLIB,[],[whether we have zlib])
164 fi
165
166
167 dnl Checks for typedefs, structures, and compiler characteristics.
168
169 AC_SUBST(LIBS)
170 AC_C_CONST
171 AC_TYPE_SIZE_T
172 AC_CHECK_FUNCS(memmove bcopy)
173
174 AC_CONFIG_FILES(Makefile libcitadel.pc tests/Makefile)
175 AC_CONFIG_HEADER(sysdep.h)
176 AC_OUTPUT
177
178 abs_srcdir="`cd $srcdir && pwd`"
179 abs_builddir="`pwd`"
180 if test "$abs_srcdir" != "$abs_builddir"; then
181   make mkdir-init
182 fi
183 echo 'zlib compression:                ' $ok_zlib
184 echo 'Character set conversion support:' $ok_iconv