git.meshlink.io Git - meshlink/blob - m4/zlib.m4

   1 dnl Check to find the zlib headers/libraries
   2
   3 AC_DEFUN([tinc_ZLIB],
   4 [
   5   AC_ARG_WITH(zlib,
   6     AS_HELP_STRING([--with-zlib=DIR], [zlib base directory, or:]),
   7     [zlib="$withval"
   8      CPPFLAGS="$CPPFLAGS -I$withval/include"
   9      LDFLAGS="$LDFLAGS -L$withval/lib"]
  10   )
  11
  12   AC_ARG_WITH(zlib-include,
  13     AS_HELP_STRING([--with-zlib-include=DIR], [zlib headers directory]),
  14     [zlib_include="$withval"
  15      CPPFLAGS="$CPPFLAGS -I$withval"]
  16   )
  17
  18   AC_ARG_WITH(zlib-lib,
  19     AS_HELP_STRING([--with-zlib-lib=DIR], [zlib library directory]),
  20     [zlib_lib="$withval"
  21      LDFLAGS="$LDFLAGS -L$withval"]
  22   )
  23
  24   AC_CHECK_HEADERS(zlib.h,
  25     [],
  26     [AC_MSG_ERROR("zlib header files not found."); break]
  27   )
  28
  29   AC_CHECK_LIB(z, compress2,
  30     [LIBS="$LIBS -lz"],
  31     [AC_MSG_ERROR("zlib libraries not found.")]
  32   )
  33 ])