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1 files changed, 78 insertions, 0 deletions

diff --git a/src/luarocks/build/cmake.lua b/src/luarocks/build/cmake.lua
new file mode 100644
index 0000000..b7a4786
--- /dev/null
+++ b/src/luarocks/build/cmake.lua
@@ -0,0 +1,78 @@
+
+--- Build back-end for CMake-based modules.
+local cmake = {}
+
+local fs = require("luarocks.fs")
+local util = require("luarocks.util")
+local cfg = require("luarocks.core.cfg")
+
+--- Driver function for the "cmake" build back-end.
+-- @param rockspec table: the loaded rockspec.
+-- @return boolean or (nil, string): true if no errors occurred,
+-- nil and an error message otherwise.
+function cmake.run(rockspec, no_install)
+   assert(rockspec:type() == "rockspec")
+   local build = rockspec.build
+   local variables = build.variables or {}
+
+   -- Pass Env variables
+   variables.CMAKE_MODULE_PATH=os.getenv("CMAKE_MODULE_PATH")
+   variables.CMAKE_LIBRARY_PATH=os.getenv("CMAKE_LIBRARY_PATH")
+   variables.CMAKE_INCLUDE_PATH=os.getenv("CMAKE_INCLUDE_PATH")
+
+   util.variable_substitutions(variables, rockspec.variables)
+
+   local ok, err_msg = fs.is_tool_available(rockspec.variables.CMAKE, "CMake")
+   if not ok then
+      return nil, err_msg
+   end
+
+   -- If inline cmake is present create CMakeLists.txt from it.
+   if type(build.cmake) == "string" then
+      local cmake_handler = assert(io.open(fs.current_dir().."/CMakeLists.txt", "w"))
+      cmake_handler:write(build.cmake)
+      cmake_handler:close()
+   end
+
+   -- Execute cmake with variables.
+   local args = ""
+
+   -- Try to pick the best generator. With msvc and x64, CMake does not select it by default so we need to be explicit.
+   if cfg.cmake_generator then
+      args = args .. ' -G"'..cfg.cmake_generator.. '"'
+   elseif cfg.is_platform("windows") and cfg.target_cpu:match("x86_64$") then
+      args = args .. " -DCMAKE_GENERATOR_PLATFORM=x64"
+   end
+
+   for k,v in pairs(variables) do
+      args = args .. ' -D' ..k.. '="' ..tostring(v).. '"'
+   end
+
+   if not fs.execute_string(rockspec.variables.CMAKE.." -H. -Bbuild.luarocks "..args) then
+      return nil, "Failed cmake."
+   end
+
+   local do_build, do_install
+   if rockspec:format_is_at_least("3.0") then
+      do_build   = (build.build_pass   == nil) and true or build.build_pass
+      do_install = (build.install_pass == nil) and true or build.install_pass
+   else
+      do_build = true
+      do_install = true
+   end
+
+   if do_build then
+      if not fs.execute_string(rockspec.variables.CMAKE.." --build build.luarocks --config Release") then
+         return nil, "Failed building."
+      end
+   end
+   if do_install and not no_install then
+      if not fs.execute_string(rockspec.variables.CMAKE.." --build build.luarocks --target install --config Release") then
+         return nil, "Failed installing."
+      end
+   end
+
+   return true
+end
+
+return cmake