dnl Check to find the zlib headers/libraries
-AC_DEFUN(tinc_ZLIB,
+AC_DEFUN([tinc_ZLIB],
[
- tinc_ac_save_CPPFLAGS="$CPPFLAGS"
+ AC_ARG_ENABLE([zlib],
+ AS_HELP_STRING([--disable-zlib], [disable zlib compression support]))
+ AS_IF([test "x$enable_zlib" != "xno"], [
+ AC_DEFINE(HAVE_ZLIB, 1, [have zlib compression support])
+ AC_ARG_WITH(zlib,
+ AS_HELP_STRING([--with-zlib=DIR], [zlib base directory, or:]),
+ [zlib="$withval"
+ CPPFLAGS="$CPPFLAGS -I$withval/include"
+ LDFLAGS="$LDFLAGS -L$withval/lib"]
+ )
- AC_ARG_WITH(zlib-include,
- [ --with-zlib-include=DIR zlib headers directory],
- [zlib_include="$withval"
- CFLAGS="$CFLAGS -I$withval"
- CPPFLAGS="$CPPFLAGS -I$withval"]
- )
+ AC_ARG_WITH(zlib-include,
+ AS_HELP_STRING([--with-zlib-include=DIR], [zlib headers directory]),
+ [zlib_include="$withval"
+ CPPFLAGS="$CPPFLAGS -I$withval"]
+ )
- AC_ARG_WITH(zlib-lib,
- [ --with-zlib-lib=DIR zlib library directory],
- [zlib_lib="$withval"
- LIBS="$LIBS -L$withval"]
- )
+ AC_ARG_WITH(zlib-lib,
+ AS_HELP_STRING([--with-zlib-lib=DIR], [zlib library directory]),
+ [zlib_lib="$withval"
+ LDFLAGS="$LDFLAGS -L$withval"]
+ )
- AC_CHECK_HEADERS(zlib.h,
- [],
- [AC_MSG_ERROR("zlib header files not found."); break]
- )
+ AC_CHECK_HEADERS(zlib.h,
+ [],
+ [AC_MSG_ERROR("zlib header files not found."); break]
+ )
- CPPFLAGS="$tinc_ac_save_CPPFLAGS"
-
- AC_CHECK_LIB(z, compress2,
- [LIBS="$LIBS -lz"],
- [AC_MSG_ERROR("zlib libraries not found.")]
- )
+ AC_CHECK_LIB(z, compress2,
+ [LIBS="$LIBS -lz"],
+ [AC_MSG_ERROR("zlib libraries not found.")]
+ )
+ ])
])