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, 902, 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 Set LIBREVISION to the ever-ascending libcitadel version number.
  16 dnl
  17 dnl If the API has changed, increment LIBCURRENT.
  18 dnl
  19 dnl Set LIBAGE to 0.
  20 dnl
  21
  22 LIBCURRENT=4
  23 LIBREVISION=902
  24 LIBAGE=0
  25
  26 sinclude(conftools/libtool.m4)
  27 sinclude(conftools/ac_c_bigendian_cross.m4)
  28
  29 AC_PROG_LIBTOOL
  30
  31 AC_SUBST(LIBCURRENT)
  32 AC_SUBST(LIBREVISION)
  33 AC_SUBST(LIBAGE)
  34
  35 dnl Checks for programs.
  36 AC_PROG_CC
  37 AC_PROG_INSTALL
  38
  39 if test "$GCC" = yes ; then
  40     dnl
  41     dnl Be careful about adding the -fexceptions option; some versions of
  42     dnl GCC don't support it and it causes extra warnings that are only
  43     dnl distracting; avoid.
  44     dnl
  45     OLDCFLAGS="$CFLAGS -Wall -Wmissing-prototypes -Wstrict-prototypes"
  46     CFLAGS="$OLDCFLAGS -fexceptions"
  47     AC_MSG_CHECKING(whether $CC accepts -fexceptions)
  48     AC_TRY_LINK( , ,
  49                    AC_MSG_RESULT(yes),
  50                    AC_MSG_RESULT(no); CFLAGS="$OLDCFLAGS")
  51     CXXFLAGS=`echo "$CFLAGS" | sed 's/ -Wmissing-prototypes -Wstrict-prototypes//'`
  52 fi
  53
  54 dnl Checks for header files.
  55 AC_HEADER_STDC
  56
  57 AC_CHECK_HEADER(sys/mman.h, [CFLAGS="$CFLAGS -D HAVE_MMAP"])
  58 AC_ARG_WITH(with_zlib,    [  --with-zlib             use zlib compression if present])
  59 dnl Checks for the zlib compression library.
  60 if test "x$with_zlib" != xno ; then
  61         AC_CHECK_HEADERS(zlib.h,
  62                 [AC_CHECK_LIB(z, zlibVersion,
  63                         [ok_zlib=yes],,
  64         )])
  65 fi
  66
  67 if test "x$ok_zlib" = xyes ; then
  68         LIBS="-lz $LIBS"
  69         AC_DEFINE(HAVE_ZLIB,[],[whether we have zlib])
  70 fi
  71
  72 AC_CHECK_HEADER(CUnit/CUnit.h, [AC_DEFINE(ENABLE_TESTS, [], [whether we should compile the test-suite])])
  73
  74 AC_CHECK_HEADER(sys/sendfile.h, [AC_DEFINE(LINUX_SENDFILE, [], [whether we have the linux sendfile api])])
  75 dnl TODO: we might need to check for the actual syntax....
  76
  77
  78 AC_MSG_CHECKING([whether your system knows about splice()])
  79 AC_TRY_COMPILE([
  80 #define _GNU_SOURCE
  81 #include <unistd.h>
  82 #include <fcntl.h>
  83 ],
  84 [
  85         ssize_t sent, pipesize;
  86         int fd, SplicePipe[2];
  87         pipesize = splice(fd, NULL,
  88                           SplicePipe[1], NULL,
  89                           1,
  90                           SPLICE_F_MORE | SPLICE_F_MOVE|SPLICE_F_NONBLOCK);
  91 ],
  92                 [
  93                   ok_splice=yes
  94                   AC_DEFINE(LINUX_SPLICE, [], [whether we have the linux splice api])
  95                   AC_MSG_RESULT([yes])
  96                 ],
  97                 [
  98                   ok_splice=no
  99                   AC_MSG_RESULT([no])
 100                 ]
 101 )
 102
 103 AC_MSG_CHECKING([whether your system likes memcpy + HKEY])
 104 AC_TRY_COMPILE([
 105 #define _GNU_SOURCE
 106 #include <ctype.h>
 107 #include <errno.h>
 108 #include <string.h>
 109 #include <unistd.h>
 110 #include <string.h>
 111 #include <stdio.h>
 112 #include <sys/select.h>
 113 #include <fcntl.h>
 114 #include <sys/types.h>
 115
 116 #include "lib/libcitadel.h"
 117 ],
 118 [
 119         char foo[22];
 120         memcpy(foo, HKEY("foo"));
 121
 122 ],
 123                 [
 124
 125                   AC_MSG_RESULT([yes])
 126                 ],
 127                 [
 128                   AC_DEFINE(UNDEF_MEMCPY, [], [whether we need to undefine memcpy])
 129                   AC_MSG_RESULT([no])
 130                 ]
 131 )
 132
 133
 134 AC_CHECK_HEADERS(iconv.h)
 135
 136
 137 dnl Here is the check for a libc integrated iconv
 138 AC_ARG_ENABLE(iconv,
 139         [  --disable-iconv         do not use iconv charset conversion],
 140         ok_iconv=no, ok_iconv=yes)
 141
 142 AC_MSG_CHECKING(Checking to see if your system supports iconv)
 143 AC_TRY_RUN([
 144         #include <iconv.h>
 145         main() {
 146                 iconv_t ic = (iconv_t)(-1) ;
 147                 ic = iconv_open("UTF-8", "us-ascii");
 148                 iconv_close(ic);
 149                 exit(0);
 150         }
 151  ],
 152                 [
 153                   ok_iconv=yes
 154                   AC_MSG_RESULT([yes])
 155                 ],
 156                 [
 157                   ok_iconv=no
 158                   AC_MSG_RESULT([no])
 159                 ]
 160 )
 161
 162 dnl Check for iconv in external libiconv
 163 if test "$ok_iconv" = no; then
 164         AC_MSG_CHECKING(Checking for an external libiconv)
 165         OLD_LDFLAGS="$LDFLAGS"
 166         LDFLAGS="$LDFLAGS -liconv"
 167         AC_TRY_RUN([
 168                         #include <iconv.h>
 169                         main() {
 170                                 iconv_t ic = (iconv_t)(-1) ;
 171                                 ic = iconv_open("UTF-8", "us-ascii");
 172                                 iconv_close(ic);
 173                         }
 174                 ],
 175                         [
 176                           ok_iconv=yes
 177                           AC_MSG_RESULT([yes])
 178                         ],
 179                         [
 180                           ok_iconv=no
 181                           LDFLAGS="$OLD_LDFLAGS"
 182                           AC_MSG_RESULT([no])
 183                         ]
 184                 )
 185 fi
 186 if test "$ok_iconv" != "no"; then
 187         AC_MSG_RESULT(libcitadel will be built with character set conversion.)
 188         AC_DEFINE(HAVE_ICONV,[],[whether we have iconv for charset conversion])
 189 else
 190         AC_MSG_RESULT(libcitadel will be built without character set conversion.)
 191 fi
 192
 193 dnl disable backtrace if we don't want it.
 194 AC_ARG_WITH(backtrace,
 195                     [  --with-backtrace          enable backtrace dumps in the syslog],
 196                         [ if test "x$withval" != "xno" ; then
 197                              CFLAGS="$CFLAGS  -rdynamic "
 198                              LDFLAGS="$LDFLAGS  -rdynamic "
 199                              AC_CHECK_FUNCS(backtrace)
 200                           fi
 201                         ]
 202 )
 203
 204
 205 AC_ARG_WITH(with_zlib,    [  --with-zlib             use zlib compression if present])
 206 dnl Checks for the zlib compression library.
 207 if test "x$with_zlib" != xno ; then
 208         AC_CHECK_HEADERS(zlib.h,
 209                 [AC_CHECK_LIB(z, zlibVersion,
 210                         [ok_zlib=yes],,
 211         )])
 212 fi
 213
 214 if test "x$ok_zlib" = xyes ; then
 215         LIBS="-lz $LIBS"
 216         AC_DEFINE(HAVE_ZLIB,[],[whether we have zlib])
 217 fi
 218
 219
 220 dnl Checks for typedefs, structures, and compiler characteristics.
 221
 222 AC_SUBST(LIBS)
 223 AC_C_CONST
 224 AC_TYPE_SIZE_T
 225 AC_CHECK_FUNCS(memmove bcopy)
 226
 227 AC_CONFIG_FILES(Makefile libcitadel.pc tests/Makefile)
 228 AC_CONFIG_HEADER(sysdep.h)
 229 AC_OUTPUT
 230
 231 abs_srcdir="`cd $srcdir && pwd`"
 232 abs_builddir="`pwd`"
 233 if test "$abs_srcdir" != "$abs_builddir"; then
 234   make mkdir-init
 235 fi
 236 echo 'zlib compression:                ' $ok_zlib
 237 echo 'Character set conversion support:' $ok_iconv