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, 7.38, https://uncensored.citadel.org)
   9
  10 AC_CONFIG_SRCDIR(Makefile.in)
  11 AC_CONFIG_AUX_DIR(conftools)
  12
  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=1
  26 LIBREVISION=0
  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 $LIBS"
  72         AC_DEFINE(HAVE_ZLIB,[],[whether we have zlib])
  73 fi
  74
  75 AC_CHECK_HEADERS(iconv.h)
  76
  77
  78 dnl Here is the check for a libc integrated iconv
  79 AC_ARG_ENABLE(iconv,
  80         [  --disable-iconv         do not use iconv charset conversion],
  81         ok_iconv=no, ok_iconv=yes)
  82
  83 AC_MSG_CHECKING(Checking to see if your system supports iconv)
  84 AC_TRY_RUN([
  85         #include <iconv.h>
  86         main() {
  87                 iconv_t ic = (iconv_t)(-1) ;
  88                 ic = iconv_open("UTF-8", "us-ascii");
  89                 iconv_close(ic);
  90                 exit(0);
  91         }
  92  ],
  93                 [
  94                   ok_iconv=yes
  95                   AC_MSG_RESULT([yes])
  96                 ],
  97                 [
  98                   ok_iconv=no
  99                   AC_MSG_RESULT([no])
 100                 ]
 101 )
 102
 103 dnl Check for iconv in external libiconv
 104 if test "$ok_iconv" = no; then
 105         AC_MSG_CHECKING(Checking for an external libiconv)
 106         OLD_LDFLAGS="$LDFLAGS"
 107         LDFLAGS="$LDFLAGS -liconv"
 108         AC_TRY_RUN([
 109                         #include <iconv.h>
 110                         main() {
 111                                 iconv_t ic = (iconv_t)(-1) ;
 112                                 ic = iconv_open("UTF-8", "us-ascii");
 113                                 iconv_close(ic);
 114                         }
 115                 ],
 116                         [
 117                           ok_iconv=yes
 118                           AC_MSG_RESULT([yes])
 119                         ],
 120                         [
 121                           ok_iconv=no
 122                           LDFLAGS="$OLD_LDFLAGS"
 123                           AC_MSG_RESULT([no])
 124                         ]
 125                 )
 126 fi
 127 if test "$ok_iconv" != "no"; then
 128         AC_MSG_RESULT(libcitadel will be built with character set conversion.)
 129         AC_DEFINE(HAVE_ICONV,[],[whether we have iconv for charset conversion])
 130 else
 131         AC_MSG_RESULT(libcitadel will be built without character set conversion.)
 132 fi
 133
 134
 135 AC_ARG_WITH(with_zlib,    [  --with-zlib             use zlib compression if present])
 136 dnl Checks for the zlib compression library.
 137 if test "x$with_zlib" != xno ; then
 138         AC_CHECK_HEADERS(zlib.h,
 139                 [AC_CHECK_LIB(z, zlibVersion,
 140                         [ok_zlib=yes],,
 141         )])
 142 fi
 143
 144 if test "x$ok_zlib" = xyes ; then
 145         LIBS="-lz $LIBS"
 146         AC_DEFINE(HAVE_ZLIB,[],[whether we have zlib])
 147 fi
 148
 149
 150 dnl Checks for typedefs, structures, and compiler characteristics.
 151
 152 AC_SUBST(LIBS)
 153 AC_C_CONST
 154 AC_TYPE_SIZE_T
 155 AC_CHECK_FUNCS(memmove bcopy)
 156
 157 AC_CONFIG_FILES(Makefile libcitadel.pc)
 158 AC_CONFIG_HEADER(sysdep.h)
 159 AC_OUTPUT
 160
 161 abs_srcdir="`cd $srcdir && pwd`"
 162 abs_builddir="`pwd`"
 163 if test "$abs_srcdir" != "$abs_builddir"; then
 164   make mkdir-init
 165 fi
 166 echo 'zlib compression:                ' $ok_zlib
 167 echo 'Character set conversion support:' $ok_iconv