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-rw-r--r--ext/zlib/extconf.rb15
1 files changed, 11 insertions, 4 deletions
diff --git a/ext/zlib/extconf.rb b/ext/zlib/extconf.rb
index d674544f22..2b2dbb1a5b 100644
--- a/ext/zlib/extconf.rb
+++ b/ext/zlib/extconf.rb
@@ -11,10 +11,9 @@ require 'rbconfig'
dir_config 'zlib'
libs = $libs
-if %w'z libz zlib1 zlib zdll zlibwapi'.find {|z| have_library(z, 'deflateReset')} and
- have_header('zlib.h') then
- have_zlib = true
-else
+have_zlib = %w'z libz zlib1 zlib zdll zlibwapi'.any? {|z| have_library(z, 'deflateReset(NULL)', 'zlib.h')}
+
+unless have_zlib
$libs = libs
unless File.directory?(zsrc = "#{$srcdir}/zlib")
dirs = Dir.open($srcdir) {|z| z.grep(/\Azlib-\d+[.\d]*\z/) {|x|"#{$srcdir}/#{x}"}}
@@ -121,10 +120,18 @@ if have_zlib
$defs << "-DHAVE_CRC32_COMBINE"
$defs << "-DHAVE_ADLER32_COMBINE"
$defs << "-DHAVE_TYPE_Z_CRC_T"
+ $defs << "-DHAVE_CRC32_Z"
+ $defs << "-DHAVE_ADLER32_Z"
+ $defs << "-DHAVE_ZLIB_SIZE_T_FUNCS"
else
have_func('crc32_combine', 'zlib.h')
have_func('adler32_combine', 'zlib.h')
have_type('z_crc_t', 'zlib.h')
+ if (have_type('z_size_t', 'zlib.h') &&
+ have_func('crc32_z', 'zlib.h') &&
+ have_func('adler32_z', 'zlib.h'))
+ $defs << "-DHAVE_ZLIB_SIZE_T_FUNCS"
+ end
end
create_makefile('zlib') {|conf|