lib/zlib/zlib.m4

   1 AC_DEFUN([AC_ZLIB],[
   2 AC_CHECK_HEADERS(zlib.h)
   3
   4 AC_CHECK_LIB_EXT(z, ZLIB_LIBS, zlibVersion)
   5
   6 AC_CACHE_CHECK([for zlib >= 1.2.3], samba_cv_zlib_1_2_3, [
   7         AC_TRY_COMPILE([
   8                 #include <zlib.h>
   9                 ],[
  10                 #if (ZLIB_VERNUM >= 0x1230)
  11                 #else
  12                 #error "ZLIB_VERNUM < 0x1230"
  13                 #endif
  14                 ],[
  15                 samba_cv_zlib_1_2_3=yes
  16                 ],[
  17                 samba_cv_zlib_1_2_3=no
  18                 ])
  19 ])
  20
  21 if test x"$ac_cv_header_zlib_h" = x"yes" -a \
  22         x"$ac_cv_lib_ext_z_zlibVersion" = x"yes" -a \
  23         x"$samba_cv_zlib_1_2_3" = x"yes"; then
  24         $1
  25 else
  26         $2
  27 fi
  28 ])
  29