tinc-vpn.org Git - tinc/blob - m4/zlib.m4

   1 dnl Check to find the zlib headers/libraries
   2
   3 AC_DEFUN(tinc_ZLIB,
   4 [
   5   tinc_ac_save_CPPFLAGS="$CPPFLAGS"
   6
   7   AC_ARG_WITH(zlib-include,
   8     [  --with-zlib-include=DIR zlib headers directory],
   9     [zlib_include="$withval"
  10      CFLAGS="$CFLAGS -I$withval"
  11      CPPFLAGS="$CPPFLAGS -I$withval"]
  12   )
  13
  14   AC_ARG_WITH(zlib-lib,
  15     [  --with-zlib-lib=DIR     zlib library directory],
  16     [zlib_lib="$withval"
  17      LIBS="$LIBS -L$withval"]
  18   )
  19
  20   AC_CHECK_HEADERS(zlib.h,
  21     [],
  22     [AC_MSG_ERROR("zlib header files not found."); break]
  23   )
  24
  25   CPPFLAGS="$tinc_ac_save_CPPFLAGS"
  26
  27   AC_CHECK_LIB(z, compress2,
  28     [LIBS="$LIBS -lz"],
  29     [AC_MSG_ERROR("zlib libraries not found.")]
  30   )
  31 ])