libcitadel/configure.ac

   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([2.69])
   7 AC_INIT([libcitadel],[m4_esyscmd_s(grep LIBCITADEL_VERSION lib/libcitadel.h | sed 's/[^0-9]*//g' )],[http://uncensored.citadel.org])
   8 AC_CONFIG_SRCDIR(Makefile.in)
   9 AC_CONFIG_AUX_DIR(conftools)
  10
  11 dnl
  12 dnl Set LIBREVISION to the ever-ascending libcitadel version number.
  13 dnl
  14 dnl If the API has changed, increment LIBCURRENT.
  15 dnl
  16 dnl Set LIBAGE to 0.
  17 dnl
  18
  19 LIBCURRENT=4
  20 LIBREVISION=m4_esyscmd_s([grep LIBCITADEL_VERSION lib/libcitadel.h | sed 's/[^0-9]*//g' ])
  21 LIBAGE=0
  22
  23 sinclude(conftools/libtool.m4)
  24 sinclude(conftools/ac_c_bigendian_cross.m4)
  25
  26 AC_PROG_LIBTOOL
  27
  28 AC_SUBST(LIBCURRENT)
  29 AC_SUBST(LIBREVISION)
  30 AC_SUBST(LIBAGE)
  31
  32 dnl Checks for programs.
  33 AC_PROG_CC
  34 AC_PROG_INSTALL
  35
  36 if test "$GCC" = yes ; then
  37     dnl
  38     dnl Be careful about adding the -fexceptions option; some versions of
  39     dnl GCC don't support it and it causes extra warnings that are only
  40     dnl distracting; avoid.
  41     dnl
  42     OLDCFLAGS="$CFLAGS -Wall -Wmissing-prototypes -Wstrict-prototypes"
  43     CFLAGS="$OLDCFLAGS -fexceptions"
  44     AC_MSG_CHECKING(whether $CC accepts -fexceptions)
  45     AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[AC_MSG_RESULT(yes)],[AC_MSG_RESULT(no); CFLAGS="$OLDCFLAGS"])
  46     CXXFLAGS=`echo "$CFLAGS" | sed 's/ -Wmissing-prototypes -Wstrict-prototypes//'`
  47 fi
  48
  49 dnl Checks for header files.
  50 m4_warn([obsolete],
  51 [The preprocessor macro `STDC_HEADERS' is obsolete.
  52   Except in unusual embedded environments, you can safely include all
  53   ISO C90 headers unconditionally.])dnl
  54 # Autoupdate added the next two lines to ensure that your configure
  55 # script's behavior did not change.  They are probably safe to remove.
  56 AC_CHECK_INCLUDES_DEFAULT
  57 AC_PROG_EGREP
  58
  59
  60 AC_CHECK_HEADER(sys/mman.h, [CFLAGS="$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_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  83 #define _GNU_SOURCE
  84 #include <unistd.h>
  85 #include <fcntl.h>
  86 ]], [[
  87         ssize_t sent, pipesize;
  88         int fd, SplicePipe[2];
  89         pipesize = splice(fd, NULL,
  90                           SplicePipe[1], NULL,
  91                           1,
  92                           SPLICE_F_MORE | SPLICE_F_MOVE|SPLICE_F_NONBLOCK);
  93 ]])],[
  94                   ok_splice=yes
  95                   AC_DEFINE(LINUX_SPLICE, [], [whether we have the linux splice api])
  96                   AC_MSG_RESULT([yes])
  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_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 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         char foo[22];
 119         memcpy(foo, HKEY("foo"));
 120
 121 ]])],[
 122
 123                   AC_MSG_RESULT([yes])
 124                 ],[
 125                   AC_DEFINE(UNDEF_MEMCPY, [], [whether we need to undefine memcpy])
 126                   AC_MSG_RESULT([no])
 127
 128 ])
 129
 130
 131 AC_CHECK_HEADERS(iconv.h)
 132
 133
 134 dnl Here is the check for a libc integrated iconv
 135 AC_ARG_ENABLE(iconv,
 136         [  --disable-iconv         do not use iconv charset conversion],
 137         ok_iconv=no, ok_iconv=yes)
 138
 139 AC_MSG_CHECKING(Checking to see if your system supports iconv)
 140 AC_RUN_IFELSE([AC_LANG_SOURCE([[
 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                 exit(0);
 147         }
 148  ]])],[
 149                   ok_iconv=yes
 150                   AC_MSG_RESULT([yes])
 151                 ],[
 152                   ok_iconv=no
 153                   AC_MSG_RESULT([no])
 154
 155 ],[])
 156
 157 dnl Check for iconv in external libiconv
 158 if test "$ok_iconv" = no; then
 159         AC_MSG_CHECKING(Checking for an external libiconv)
 160         OLD_LDFLAGS="$LDFLAGS"
 161         LDFLAGS="$LDFLAGS -liconv"
 162         AC_RUN_IFELSE([AC_LANG_SOURCE([[
 163                         #include <iconv.h>
 164                         main() {
 165                                 iconv_t ic = (iconv_t)(-1) ;
 166                                 ic = iconv_open("UTF-8", "us-ascii");
 167                                 iconv_close(ic);
 168                         }
 169                 ]])],[
 170                           ok_iconv=yes
 171                           AC_MSG_RESULT([yes])
 172                         ],[
 173                           ok_iconv=no
 174                           LDFLAGS="$OLD_LDFLAGS"
 175                           AC_MSG_RESULT([no])
 176
 177                 ],[])
 178 fi
 179 if test "$ok_iconv" != "no"; then
 180         AC_MSG_RESULT(libcitadel will be built with character set conversion.)
 181         AC_DEFINE(HAVE_ICONV,[],[whether we have iconv for charset conversion])
 182 else
 183         AC_MSG_RESULT(libcitadel will be built without character set conversion.)
 184 fi
 185
 186 dnl disable backtrace if we don't want it.
 187 AC_ARG_WITH(backtrace,
 188                     [  --with-backtrace          enable backtrace dumps in the syslog],
 189                         [ if test "x$withval" != "xno" ; then
 190                              CFLAGS="$CFLAGS  -rdynamic "
 191                              LDFLAGS="$LDFLAGS  -rdynamic "
 192                              AC_CHECK_FUNCS(backtrace)
 193                           fi
 194                         ]
 195 )
 196
 197
 198 AC_ARG_WITH(with_zlib,    [  --with-zlib             use zlib compression if present])
 199 dnl Checks for the zlib compression library.
 200 if test "x$with_zlib" != xno ; then
 201         AC_CHECK_HEADERS(zlib.h,
 202                 [AC_CHECK_LIB(z, zlibVersion,
 203                         [ok_zlib=yes],,
 204         )])
 205 fi
 206
 207 if test "x$ok_zlib" = xyes ; then
 208         LIBS="-lz $LIBS"
 209         AC_DEFINE(HAVE_ZLIB,[],[whether we have zlib])
 210 fi
 211
 212
 213 dnl Checks for typedefs, structures, and compiler characteristics.
 214
 215 AC_SUBST(LIBS)
 216 AC_C_CONST
 217 AC_TYPE_SIZE_T
 218 AC_CHECK_FUNCS(memmove bcopy)
 219
 220 AC_CONFIG_FILES(Makefile libcitadel.pc)
 221 AC_CONFIG_HEADERS([sysdep.h])
 222 AC_OUTPUT
 223
 224 abs_srcdir="`cd $srcdir && pwd`"
 225 abs_builddir="`pwd`"
 226 if test "$abs_srcdir" != "$abs_builddir"; then
 227   make mkdir-init
 228 fi
 229 echo 'zlib compression:                ' $ok_zlib
 230 echo 'Character set conversion support:' $ok_iconv