No longer check for zlib, it's provided by libcaca.

configure.ac

@@ -24,7 +24,7 @@ if test "$build" != "$host" -a "${PKG_CONFIG_LIBDIR}" = ""; then
   export PKG_CONFIG_LIBDIR=/dev/null
 fi
 
-AC_CHECK_HEADERS(getopt.h sys/ioctl.h zlib.h)
+AC_CHECK_HEADERS(getopt.h sys/ioctl.h)
 
 ac_cv_have_getopt_long="no"
 AC_CHECK_FUNCS(getopt_long,
@@ -38,10 +38,6 @@ fi
 AM_CONDITIONAL(NEED_GETOPT_LONG, test "$ac_cv_have_getopt_long" = "no")
 AC_SUBST(GETOPT_LIBS)
 
-AC_CHECK_LIB(z, gzopen,
- [ZLIB_LIBS="${ZLIB_LIBS} -lz"])
-AC_SUBST(ZLIB_LIBS)
-
 AC_CACHE_CHECK([for TIOCGWINSZ],
   [ac_cv_have_tiocgwinsz],
   [AC_TRY_COMPILE(

src/Makefile.am

@@ -10,7 +10,7 @@ toilet_SOURCES = main.c toilet.h \
 
 toilet_CPPFLAGS = -DFONTDIR=\"$(datadir)/figlet\"
 toilet_CFLAGS = @CACA_CFLAGS@
-toilet_LDADD = @CACA_LIBS@ @GETOPT_LIBS@ @ZLIB_LIBS@
+toilet_LDADD = @CACA_LIBS@ @GETOPT_LIBS@
 
 if NEED_GETOPT_LONG
 GETOPT = mygetopt.c mygetopt.h