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if test "$needs_zlib" = no; then
ZLIBCPPFLAGS=
LDZLIB=
ZLIBDEP=
else
EXTRA_ZLIB_INCLUDE=
EXTRA_ZLIB_LIBDIR=
if test "$with_system_zlib" = yes; then
if test "x$with_zlib_libdir" != x; then
EXTRA_ZLIB_LIBDIR="-L$with_zlib_libdir"
fi
if test "x$with_zlib_include" != x; then
EXTRA_ZLIB_INCLUDE="-I$with_zlib_include"
fi
fi
OLD_LDFLAGS=$LDFLAGS
OLD_CPP=$CPP
OLD_LIBS=$LIBS
LDFLAGS="$LDFLAGS $EXTRA_ZLIB_LIBDIR"
CPP="$CPP $EXTRA_ZLIB_INCLUDE"
if test "$with_system_zlib" = yes; then
AC_CHECK_LIB(z, inflate,,
AC_MSG_WARN(Standard ZLIB library not found. Compiling my own.)
with_system_zlib=no)
fi
if test "$with_system_zlib" = yes; then
AC_CHECK_HEADERS(zlib.h)
if test "$ac_cv_header_zlib_h" != yes; then
AC_MSG_WARN(zlib.h not found. Using my own zlib sources.)
with_system_zlib=no
fi
fi
LDFLAGS=$OLD_LDFLAGS
CPP=$OLD_CPP
LIBS=$OLD_LIBS
if test "$with_system_zlib" != yes; then
ZLIBCPPFLAGS='-I$(ZLIBDIR) -I$(ZLIBSRCDIR)'
LDZLIB='$(ZLIBDIR)/libz.a'
ZLIBDEP='$(ZLIBDIR)/libz.a'
using_system_zlib=no
else
ZLIBCPPFLAGS="$EXTRA_ZLIB_INCLUDE"
LDZLIB="$EXTRA_ZLIB_LIBDIR -lz"
ZLIBDEP=
using_system_zlib=yes
fi
fi
AC_SUBST(ZLIBCPPFLAGS)
AC_SUBST(LDZLIB)
AC_SUBST(ZLIBDEP)
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