diff options
Diffstat (limited to 'lib/sol2/cmake/Modules/FindLua/version_check.cmake')
| -rw-r--r-- | lib/sol2/cmake/Modules/FindLua/version_check.cmake | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/lib/sol2/cmake/Modules/FindLua/version_check.cmake b/lib/sol2/cmake/Modules/FindLua/version_check.cmake new file mode 100644 index 0000000..fa62f43 --- /dev/null +++ b/lib/sol2/cmake/Modules/FindLua/version_check.cmake @@ -0,0 +1,28 @@ +# Distributed under the OSI-approved BSD 3-Clause License. See accompanying +# file Copyright.txt or https://cmake.org/licensing for details. + +# Provides a common-mechanic for extracting Lua versions from Lua/LuaJIT headers +macro(_lua_check_header_version _header_file _prefix) + # At least 5.[012] have different ways to express the version + # so all of them need to be tested. Lua 5.2 defines LUA_VERSION + # and LUA_RELEASE as joined by the C preprocessor, so avoid those. + file(STRINGS "${_header_file}" lua_version_strings + REGEX "^#define[ \t]+LUA_(RELEASE[ \t]+\"Lua [0-9]|VERSION([ \t]+\"Lua [0-9]|_[MR])).*") + + string(REGEX REPLACE ".*;#define[ \t]+LUA_VERSION_MAJOR[ \t]+\"([0-9])\"[ \t]*;.*" "\\1" ${_prefix}_VERSION_MAJOR ";${lua_version_strings};") + if (${_prefix}_VERSION_MAJOR MATCHES "^[0-9]+$") + string(REGEX REPLACE ".*;#define[ \t]+LUA_VERSION_MINOR[ \t]+\"([0-9])\"[ \t]*;.*" "\\1" "${_prefix}_VERSION_MINOR" ";${lua_version_strings};") + string(REGEX REPLACE ".*;#define[ \t]+LUA_VERSION_RELEASE[ \t]+\"([0-9])\"[ \t]*;.*" "\\1" "${_prefix}_VERSION_PATCH" ";${lua_version_strings};") + set(${_prefix}_VERSION_STRING "${${_prefix}_VERSION_MAJOR}.${${_prefix}_VERSION_MINOR}.${${_prefix}_VERSION_PATCH}") + else () + string(REGEX REPLACE ".*;#define[ \t]+LUA_RELEASE[ \t]+\"Lua ([0-9.]+)\"[ \t]*;.*" "\\1" ${_prefix}_VERSION_STRING ";${lua_version_strings};") + if (NOT LUA_VERSION_STRING MATCHES "^[0-9.]+$") + string(REGEX REPLACE ".*;#define[ \t]+LUA_VERSION[ \t]+\"Lua ([0-9.]+)\"[ \t]*;.*" "\\1" ${_prefix}_VERSION_STRING ";${lua_version_strings};") + endif () + string(REGEX REPLACE "^([0-9]+)\\.[0-9.]*$" "\\1" ${_prefix}_VERSION_MAJOR "${${_prefix}_VERSION_STRING}") + string(REGEX REPLACE "^[0-9]+\\.([0-9]+)[0-9.]*$" "\\1" ${_prefix}_VERSION_MINOR "${${_prefix}_VERSION_STRING}") + string(REGEX REPLACE "^[0-9]+\\.[0-9]+\\.([0-9]).*" "\\1" ${_prefix}_VERSION_PATCH "${${_prefix}_VERSION_STRING}") + endif () + + unset(lua_version_strings) +endmacro(_lua_check_header_version)
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