neovim/cmake/LuaHelpers.cmake
Rui Abreu Ferreira d5c89b1896 cmake: Allow building without Luajit
By default Neovim searched a Luajit instalation and linked against
the luajit library.

In practice Neovim only requires luajit to run the unit tests. All other
targets only require lua and the correct lua modules. This commit:

1. Remove the strict dependency on Luajit
2. Makes the unittest target depend on the lua 'ffi' module.
   If the module is not available the target is not enabled
   and a message is displayed.
2016-05-19 17:55:19 +01:00

39 lines
1.1 KiB
CMake

#
# Functions to help checking for a Lua interpreter
#
# Check if a module is available in Lua
function(check_lua_module LUA_PRG_PATH MODULE RESULT_VAR)
execute_process(COMMAND ${LUA_PRG_PATH} -e "require('${MODULE}')"
RESULT_VARIABLE module_missing
ERROR_QUIET)
if(module_missing)
set(${RESULT_VAR} False PARENT_SCOPE)
else()
set(${RESULT_VAR} True PARENT_SCOPE)
endif()
endfunction()
# Check Lua interpreter for dependencies
function(check_lua_deps LUA_PRG_PATH MODULES RESULT_VAR)
# Check if the lua interpreter at the given path
# satisfies all Neovim dependencies
message(STATUS "Checking Lua interpreter ${LUA_PRG_PATH}")
if(NOT EXISTS ${LUA_PRG_PATH})
message(STATUS
"[${LUA_PRG_PATH}] file not found")
endif()
foreach(module ${MODULES})
check_lua_module(${LUA_PRG_PATH} ${module} has_module)
if(NOT has_module)
message(STATUS
"[${LUA_PRG_PATH}] The '${module}' lua package is required for building Neovim")
set(${RESULT_VAR} False PARENT_SCOPE)
return()
endif()
endforeach()
set(${RESULT_VAR} True PARENT_SCOPE)
endfunction()