source/libs/zziplib/zziplib-0.13.62/bins/zziplib.m4

   1 dnl this macro has been copied from /usr/share/aclocal/pkg.m4
   2 dnl modified to check only for zziplib. You are advised to use
   3 dnl pgkconfig macro directly instead. It is only installed to
   4 dnl the convenience of software makers who do not want to have
   5 dnl yet another package dependency when building zziplib-based
   6 dnl projects. In general, you can include in your configure.ac
   7 dnl some line like
   8 dnl PKG_CHECK_ZZIPLIB([ZZIP],[0.10.75])
   9 dnl in order to get the two autoconf/automake subst variables
  10 dnl named ZZIP_CFLAGS and ZZIP_LIBS respectivly.
  11
  12 dnl PKG_CHECK_ZZIPLIB(ZZIP, minversion, action-if, action-not)
  13 dnl defines ZZIP_LIBS, ZZIP_CFLAGS, see pkg-config man page
  14 dnl also defines ZZIP_PKG_ERRORS on error
  15 AC_DEFUN([PKG_CHECK_ZZIPLIB], [# checking for zziplib cflags/libs $2
  16   succeeded=no
  17
  18   if test -z "$PKG_CONFIG"; then
  19     AC_PATH_PROG([PKG_CONFIG],[pkg-config],[no])
  20   fi
  21
  22   if test "$PKG_CONFIG" = "no" ; then
  23     dnl we stick in an extra section that takes advantage of `zzip-config`
  24     dnl script that might be there and carry cflags/libs info as well.
  25     AC_PATH_PROG([ZZIP_CONFIG], [zzip-config], [no])
  26     if test "$ZZIP_CONFIG" = "no" ; then
  27       echo "*** Neither config spec could be found - there was no archaic"
  28       echo "*** zzip-config script around and no pkg-config script in the"
  29       echo "*** PATH. Make sure that either one is in your path, or set"
  30       echo "*** set the PKG_CONFIG environment variable to the full"
  31       echo "*** path to pkg-config. See http://zziplib.sf.net - or see"
  32       echo "*** http://www.freedesktop.org/software/pkgconfig for more."
  33     else
  34       AC_MSG_CHECKING($1_LIBS)
  35       $1_LIBS=`$ZZIP_CONFIG --libs 2>/dev/null`
  36       AC_MSG_RESULT($[]$1_LIBS)
  37
  38       if test ".$[]$1_LIBS" != "." ; then
  39         AC_MSG_CHECKING($1_CFLAGS)
  40         $1_CFLAGS=`$ZZIP_CONFIG --cflags 2>/dev/null`
  41         AC_MSG_RESULT($[]$1_CFLAGS)
  42         succeeded="yes"
  43       else
  44         AC_MSG_CHECKING($1_CFLAGS)
  45         $1_CFLAGS=`$ZZIP_CONFIG --cflags 2>&1`
  46         AC_MSG_RESULT([(detecting errors...)])
  47         AC_MSG_WARN([... there is a problem with zzip-config])
  48         AC_MSG_WARN([... $[]$1_CFLAGS])
  49         AC_MSG_WARN([... inference of library requirements from prefix])
  50         succeeded=`echo $ZZIP_CONFIG | sed -e 's,/[^/]*,,'` # dirname
  51         $1_CFLAGS=""
  52         $1_LIBS=""
  53         if test "/$succeeded" != "//usr" ; then
  54           test -d "$succeeded/include" && $1_CFLAGS="-I$succeeded/include "
  55           test -d "$succeeded/lib"     && $1_LIBS="-L$succeeded/lib "
  56         fi
  57         $1_LIBS="$[]$1_LIBS -lzzip -lz"
  58         succeeded="yes"
  59         AC_MSG_CHECKING($1_CFLAGS... guessed)
  60         AC_MSG_RESULT($[]$1_CFLAGS)
  61         AC_MSG_CHECKING($1_LIBS... guessed)
  62         AC_MSG_RESULT($[]$1_LIBS)
  63       fi
  64     fi
  65   else
  66      PKG_CONFIG_MIN_VERSION=0.9.0
  67      if $PKG_CONFIG --atleast-pkgconfig-version $PKG_CONFIG_MIN_VERSION; then
  68         AC_MSG_CHECKING(for zziplib[]ifelse([$2],,,[ >= $2]))
  69
  70         if $PKG_CONFIG --exists "zziplib[]ifelse([$2],,,[ >= $2])" ; then
  71             AC_MSG_RESULT(yes)
  72             succeeded=yes
  73
  74             AC_MSG_CHECKING($1_CFLAGS)
  75             $1_CFLAGS=`$PKG_CONFIG --cflags "zziplib[]ifelse([$2],,,[ >= $2])"`
  76             AC_MSG_RESULT($$1_CFLAGS)
  77
  78             AC_MSG_CHECKING($1_LIBS)
  79             $1_LIBS=`$PKG_CONFIG --libs "zziplib[]ifelse([$2],,,[ >= $2])"`
  80             AC_MSG_RESULT($$1_LIBS)
  81         else
  82             $1_CFLAGS=""
  83             $1_LIBS=""
  84             ## If we have a custom action on failure, don't print errors, but
  85             ## do set a variable so people can do so.
  86             $1_PKG_ERRORS=`$PKG_CONFIG dnl
  87         --errors-to-stdout --print-errors "zziplib[]ifelse([$2],,,[ >= $2])"`
  88             ifelse([$4], ,echo $$1_PKG_ERRORS,)
  89         fi
  90
  91         AC_SUBST($1_CFLAGS)
  92         AC_SUBST($1_LIBS)
  93      else
  94         echo "*** Your version of pkg-config is too old. You need version $PKG_CONFIG_MIN_VERSION or newer."
  95         echo "*** See http://www.freedesktop.org/software/pkgconfig"
  96      fi
  97   fi
  98
  99   if test $succeeded = yes; then
 100      ifelse([$3], , :, [$3])
 101   else
 102      succeeded="zziplib[]ifelse([$2],,,[ >= $2])"
 103      ifelse([$4], ,[AC_MSG_ERROR([Library requirements ($succeeded) not met; consider adjusting the PKG_CONFIG_PATH environment variable if your libraries are in a nonstandard prefix so pkg-config can find them.])], [$4])
 104   fi
 105 ])