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FindOpenSSL: improve version number handling 

First this fixes the bug that e.g. version "1.0.0" was shown as "1..". When
pkg-config was used to find OpenSSL the header file was parsed for the version
number even if pkg-config returned it already. Finally we also include the
patch level (i.e. the letter after the version number) in OPENSSL_VERSION.
This commit is contained in:
Rolf Eike Beer 2012-01-12 19:29:39 +01:00
parent 50edbf0f22
commit 8e8672ccdb
1 changed files with 32 additions and 8 deletions
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40
Modules/FindOpenSSL.cmake
View File

@ -7,7 +7,7 @@
# OPENSSL_FOUND - system has the OpenSSL library
# OPENSSL_INCLUDE_DIR - the OpenSSL include directory
# OPENSSL_LIBRARIES - The libraries needed to use OpenSSL
# OPENSSL_VERSION - This is set to $major.$minor.$revision (eg. 0.9.8)
# OPENSSL_VERSION - This is set to $major.$minor.$revision$path (eg. 0.9.8s)
#=============================================================================
# Copyright 2006-2009 Kitware, Inc.
@ -216,16 +216,40 @@ ELSE(WIN32 AND NOT CYGWIN)
ENDIF(WIN32 AND NOT CYGWIN)
if (OPENSSL_INCLUDE_DIR)
file(STRINGS "${OPENSSL_INCLUDE_DIR}/openssl/opensslv.h" openssl_version_str REGEX "^#define[\t ]+OPENSSL_VERSION_NUMBER[\t ]+0x[0-9][0-9][0-9][0-9][0-9][0-9].*")
if (_OPENSSL_VERSION)
set(OPENSSL_VERSION "${_OPENSSL_VERSION}")
else (_OPENSSL_VERSION)
file(STRINGS "${OPENSSL_INCLUDE_DIR}/openssl/opensslv.h" openssl_version_str
REGEX "^#define[\t ]+OPENSSL_VERSION_NUMBER[\t ]+0x[0-9][0-9][0-9][0-9][0-9][0-9].*")
string(REGEX REPLACE "^.*OPENSSL_VERSION_NUMBER[\t ]+0x([0-9]).*$" "\\1" OPENSSL_VERSION_MAJOR "${openssl_version_str}")
string(REGEX REPLACE "^.*OPENSSL_VERSION_NUMBER[\t ]+0x[0-9]([0-9][0-9]).*$" "\\1" OPENSSL_VERSION_MINOR "${openssl_version_str}")
string(REGEX REPLACE "^.*OPENSSL_VERSION_NUMBER[\t ]+0x[0-9][0-9][0-9]([0-9][0-9]).*$" "\\1" OPENSSL_VERSION_PATCH "${openssl_version_str}")
# The version number is encoded as 0xMNNFFPPS: major minor fix patch status
# The status gives if this is a developer or prerelease and is ignored here.
# Major, minor, and fix directly translate into the version numbers shown in
# the string. The patch field translates to the single character suffix that
# indicates the bug fix state, which 00 -> nothing, 01 -> a, 02 -> b and so
# on.
string(REGEX REPLACE "^0" "" OPENSSL_VERSION_MINOR "${OPENSSL_VERSION_MINOR}")
string(REGEX REPLACE "^0" "" OPENSSL_VERSION_PATCH "${OPENSSL_VERSION_PATCH}")
string(REGEX REPLACE "^.*OPENSSL_VERSION_NUMBER[\t ]+0x([0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f]).*$"
"\\1;\\2;\\3;\\4;\\5" OPENSSL_VERSION_LIST "${openssl_version_str}")
list(GET OPENSSL_VERSION_LIST 0 OPENSSL_VERSION_MAJOR)
list(GET OPENSSL_VERSION_LIST 1 OPENSSL_VERSION_MINOR)
list(GET OPENSSL_VERSION_LIST 2 OPENSSL_VERSION_FIX)
list(GET OPENSSL_VERSION_LIST 3 OPENSSL_VERSION_PATCH)
set(OPENSSL_VERSION "${OPENSSL_VERSION_MAJOR}.${OPENSSL_VERSION_MINOR}.${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)
endif (OPENSSL_INCLUDE_DIR)
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)