Core/Build: Force minimum ACE (5.8.3) and OpenSSL (1.0.0) version detection

Core/Build: Do not ignore command line cmake options: ACE_INCLUDE_DIR, ACE_LIBRARY and OPENSSL_INCLUDE_DIR

1 files changed, 52 insertions, 5 deletions

diff --git a/cmake/macros/FindOpenSSL.cmake b/cmake/macros/FindOpenSSL.cmake
index 245a91d4199..1cc34b36a4c 100644
--- a/cmake/macros/FindOpenSSL.cmake
+++ b/cmake/macros/FindOpenSSL.cmake
@@ -171,10 +171,57 @@ ELSE(WIN32 AND NOT CYGWIN)
 
 ENDIF(WIN32 AND NOT CYGWIN)
 
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(OpenSSL DEFAULT_MSG
-  OPENSSL_LIBRARIES 
-  OPENSSL_INCLUDE_DIR
-)
+if (NOT OPENSSL_INCLUDE_DIR)
+  include(FindPackageHandleStandardArgs)
+  find_package_handle_standard_args(OpenSSL DEFAULT_MSG
+    OPENSSL_LIBRARIES
+    OPENSSL_INCLUDE_DIR
+  )
+endif()
+
+if (OPENSSL_INCLUDE_DIR)
+  message( STATUS "Found OpenSSL library: ${OPENSSL_LIBRARIES}")
+  message( STATUS "Found OpenSSL headers: ${OPENSSL_INCLUDE_DIR}")
+  if (_OPENSSL_VERSION)
+    set(OPENSSL_VERSION "${_OPENSSL_VERSION}")
+  else (_OPENSSL_VERSION)
+    file(STRINGS "${OPENSSL_INCLUDE_DIR}/openssl/opensslv.h" openssl_version_str
+         REGEX "^#define[\t ]+OPENSSL_VERSION_NUMBER[\t ]+0x[0-9][0-9][0-9][0-9][0-9][0-9].*")
+
+    # The version number is encoded as 0xMNNFFPPS: major minor fix patch status
+    # The status gives if this is a developer or prerelease and is ignored here.
+    # Major, minor, and fix directly translate into the version numbers shown in
+    # the string. The patch field translates to the single character suffix that
+    # indicates the bug fix state, which 00 -> nothing, 01 -> a, 02 -> b and so
+    # on.
+
+    string(REGEX REPLACE "^.*OPENSSL_VERSION_NUMBER[\t ]+0x([0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f]).*$"
+           "\\1;\\2;\\3;\\4;\\5" OPENSSL_VERSION_LIST "${openssl_version_str}")
+    list(GET OPENSSL_VERSION_LIST 0 OPENSSL_VERSION_MAJOR)
+    list(GET OPENSSL_VERSION_LIST 1 OPENSSL_VERSION_MINOR)
+    list(GET OPENSSL_VERSION_LIST 2 OPENSSL_VERSION_FIX)
+    list(GET OPENSSL_VERSION_LIST 3 OPENSSL_VERSION_PATCH)
+
+    string(REGEX REPLACE "^0(.)" "\\1" OPENSSL_VERSION_MINOR "${OPENSSL_VERSION_MINOR}")
+    string(REGEX REPLACE "^0(.)" "\\1" OPENSSL_VERSION_FIX "${OPENSSL_VERSION_FIX}")
+
+    if (NOT OPENSSL_VERSION_PATCH STREQUAL "00")
+      # 96 is the ASCII code of 'a' minus 1
+      math(EXPR OPENSSL_VERSION_PATCH_ASCII "${OPENSSL_VERSION_PATCH} + 96")
+      # Once anyone knows how OpenSSL would call the patch versions beyond 'z'
+      # this should be updated to handle that, too. This has not happened yet
+      # so it is simply ignored here for now.
+      string(ASCII "${OPENSSL_VERSION_PATCH_ASCII}" OPENSSL_VERSION_PATCH_STRING)
+    endif (NOT OPENSSL_VERSION_PATCH STREQUAL "00")
+
+    set(OPENSSL_VERSION "${OPENSSL_VERSION_MAJOR}.${OPENSSL_VERSION_MINOR}.${OPENSSL_VERSION_FIX}${OPENSSL_VERSION_PATCH_STRING}")
+  endif (_OPENSSL_VERSION)
+
+  include(EnsureVersion)
+  ENSURE_VERSION( "${OPENSSL_EXPECTED_VERSION}" "${OPENSSL_VERSION}" OPENSSL_VERSION_OK)
+  if (NOT OPENSSL_VERSION_OK)
+      message(FATAL_ERROR "TrinityCore needs OpenSSL version ${OPENSSL_EXPECTED_VERSION} but found version ${OPENSSL_VERSION}")
+  endif()
+endif (OPENSSL_INCLUDE_DIR)
 
 MARK_AS_ADVANCED(OPENSSL_INCLUDE_DIR OPENSSL_LIBRARIES)