GitHub CI: update list of container images

[tinc] / m4 / zlib.m4

diff --git a/m4/zlib.m4 b/m4/zlib.m4
deleted file mode 100644 (file)
index d5fbc67..0000000
--- a/m4/zlib.m4
+++ /dev/null
@@ -1,31 +0,0 @@
-dnl Check to find the zlib headers/libraries
-
-AC_DEFUN(tinc_ZLIB,
-[
-  tinc_ac_save_CPPFLAGS="$CPPFLAGS"
-
-  AC_ARG_WITH(zlib-include,
-    [  --with-zlib-include=DIR zlib headers directory],
-    [zlib_include="$withval"
-     CFLAGS="$CFLAGS -I$withval"
-     CPPFLAGS="$CPPFLAGS -I$withval"]
-  )
-
-  AC_ARG_WITH(zlib-lib,
-    [  --with-zlib-lib=DIR     zlib library directory],
-    [zlib_lib="$withval"
-     LIBS="$LIBS -L$withval"]
-  )
-
-  AC_CHECK_HEADERS(zlib.h,
-    [],
-    [AC_MSG_ERROR("zlib header files not found."); break]
-  )
-
-  CPPFLAGS="$tinc_ac_save_CPPFLAGS"
-
-  AC_CHECK_LIB(z, compress2,
-    [LIBS="$LIBS -lz"],
-    [AC_MSG_ERROR("zlib libraries not found.")]
-  )
-])