1 files changed, 47 insertions, 5 deletions
diff --git a/ext/openssl/extconf.rb b/ext/openssl/extconf.rb
index 96982309c3..8f6047087a 100644
--- a/ext/openssl/extconf.rb
+++ b/ext/openssl/extconf.rb
@@ -36,17 +36,59 @@ have_library("socket", "socket")
 
 Logging::message "=== Checking for required stuff... ===\n"
 result = pkg_config("openssl") && have_header("openssl/ssl.h")
-unless result
+
+def find_openssl_library
   if $mswin || $mingw
     # required for static OpenSSL libraries
     have_library("gdi32") # OpenSSL <= 1.0.2 (for RAND_screen())
     have_library("crypt32")
   end
 
-  result = have_header("openssl/ssl.h")
-  result &&= %w[crypto libeay32].any? {|lib| have_library(lib, "CRYPTO_malloc")}
-  result &&= %w[ssl ssleay32].any? {|lib| have_library(lib, "SSL_new")}
-  unless result
+  return false unless have_header("openssl/ssl.h")
+
+  ret = have_library("crypto", "CRYPTO_malloc") &&
+    have_library("ssl", "SSL_new")
+  return ret if ret
+
+  if $mswin
+    # OpenSSL >= 1.1.0: libcrypto.lib and libssl.lib.
+    if have_library("libcrypto", "CRYPTO_malloc") &&
+        have_library("libssl", "SSL_new")
+      return true
+    end
+
+    # OpenSSL <= 1.0.2: libeay32.lib and ssleay32.lib.
+    if have_library("libeay32", "CRYPTO_malloc") &&
+        have_library("ssleay32", "SSL_new")
+      return true
+    end
+
+    # LibreSSL: libcrypto-##.lib and libssl-##.lib, where ## is the ABI version
+    # number. We have to find the version number out by scanning libpath.
+    libpath = $LIBPATH.dup
+    libpath |= ENV["LIB"].split(File::PATH_SEPARATOR)
+    libpath.map! { |d| d.tr(File::ALT_SEPARATOR, File::SEPARATOR) }
+
+    ret = [
+      ["crypto", "CRYPTO_malloc"],
+      ["ssl", "SSL_new"]
+    ].all? do |base, func|
+      result = false
+      libs = ["lib#{base}-[0-9][0-9]", "lib#{base}-[0-9][0-9][0-9]"]
+      libs = Dir.glob(libs.map{|l| libpath.map{|d| File.join(d, l + ".*")}}.flatten).map{|path| File.basename(path, ".*")}.uniq
+      libs.each do |lib|
+        result = have_library(lib, func)
+        break if result
+      end
+      result
+    end
+    return ret if ret
+  end
+  return false
+end
+
+unless result
+  unless find_openssl_library
     Logging::message "=== Checking for required stuff failed. ===\n"
     Logging::message "Makefile wasn't created. Fix the errors above.\n"
     exit 1