2 files changed, 95 insertions, 0 deletions
diff --git a/third-party/CMakeLists.txt b/third-party/CMakeLists.txt
index 468360b9d3..6f5a5f44dc 100644
--- a/third-party/CMakeLists.txt
+++ b/third-party/CMakeLists.txt
@@ -21,6 +21,9 @@ option(USE_BUNDLED_LIBUV "Use the bundled libuv." ${USE_BUNDLED})
 option(USE_BUNDLED_MSGPACK "Use the bundled msgpack." ${USE_BUNDLED})
 option(USE_BUNDLED_LUAJIT "Use the bundled version of luajit." ${USE_BUNDLED})
 option(USE_BUNDLED_LUAROCKS "Use the bundled version of luarocks." ${USE_BUNDLED})
+#XXX(tarruda): Lua is only used for debugging the functional test client, no
+# build it unless explicitly requested
+option(USE_BUNDLED_LUA "Use the bundled version of lua." OFF)
 
 option(USE_EXISTING_SRC_DIR "Skip download of deps sources in case of existing source directory." OFF)
 
@@ -80,6 +83,9 @@ set(MSGPACK_SHA256 afda64ca445203bb7092372b822bae8b2539fdcebbfc3f753f393628c2bcf
 set(LUAJIT_URL https://github.com/neovim/deps/raw/master/opt/LuaJIT-2.0.4.tar.gz)
 set(LUAJIT_SHA256 620fa4eb12375021bef6e4f237cbd2dd5d49e56beb414bee052c746beef1807d)
 
+set(LUA_URL https://github.com/lua/lua/archive/5.1.5.tar.gz)
+set(LUA_SHA256 1cd642c4c39778306a14e62ccddace5c7a4fb2257b0b06f43bc81cf305c7415f)
+
 set(LUAROCKS_URL https://github.com/keplerproject/luarocks/archive/5d8a16526573b36d5b22aa74866120c998466697.tar.gz)
 set(LUAROCKS_SHA256 cae709111c5701235770047dfd7169f66b82ae1c7b9b79207f9df0afb722bfd9)
 
@@ -119,6 +125,10 @@ if(USE_BUNDLED_LUAJIT)
   include(BuildLuajit)
 endif()
 
+if(USE_BUNDLED_LUA AND NOT CMAKE_CROSSCOMPILING)
+  include(BuildLua)
+endif()
+
 if(USE_BUNDLED_LUAROCKS)
   include(BuildLuarocks)
 endif()
diff --git a/third-party/cmake/BuildLua.cmake b/third-party/cmake/BuildLua.cmake
new file mode 100644
index 0000000000..b24ef089de
--- /dev/null
+++ b/third-party/cmake/BuildLua.cmake
@@ -0,0 +1,85 @@
+include(CMakeParseArguments)
+
+# BuildLua(CONFIGURE_COMMAND ... BUILD_COMMAND ... INSTALL_COMMAND ...)
+# Reusable function to build lua, wraps ExternalProject_Add.
+# Failing to pass a command argument will result in no command being run
+function(BuildLua)
+  cmake_parse_arguments(_lua
+    ""
+    ""
+    "CONFIGURE_COMMAND;BUILD_COMMAND;INSTALL_COMMAND"
+    ${ARGN})
+
+  if(NOT _lua_CONFIGURE_COMMAND AND NOT _lua_BUILD_COMMAND
+       AND NOT _lua_INSTALL_COMMAND)
+    message(FATAL_ERROR "Must pass at least one of CONFIGURE_COMMAND, BUILD_COMMAND, INSTALL_COMMAND")
+  endif()
+
+  ExternalProject_Add(lua
+    PREFIX ${DEPS_BUILD_DIR}
+    URL ${LUA_URL}
+    DOWNLOAD_DIR ${DEPS_DOWNLOAD_DIR}/lua
+    DOWNLOAD_COMMAND ${CMAKE_COMMAND}
+      -DPREFIX=${DEPS_BUILD_DIR}
+      -DDOWNLOAD_DIR=${DEPS_DOWNLOAD_DIR}/lua
+      -DURL=${LUA_URL}
+      -DEXPECTED_SHA256=${LUA_SHA256}
+      -DTARGET=lua
+      -DUSE_EXISTING_SRC_DIR=${USE_EXISTING_SRC_DIR}
+      -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/DownloadAndExtractFile.cmake
+    CONFIGURE_COMMAND "${_lua_CONFIGURE_COMMAND}"
+    BUILD_IN_SOURCE 1
+    BUILD_COMMAND "${_lua_BUILD_COMMAND}"
+    INSTALL_COMMAND "${_lua_INSTALL_COMMAND}")
+endfunction()
+
+if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
+  set(LUA_TARGET linux)
+elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+  set(LUA_TARGET macosx)
+elseif(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
+  set(LUA_TARGET freebsd)
+elseif(CMAKE_SYSTEM_NAME MATCHES "BSD")
+  set(CMAKE_LUA_TARGET bsd)
+elseif(SYSTEM_NAME MATCHES "^MINGW")
+  set(CMAKE_LUA_TARGET mingw)
+else()
+  if(UNIX)
+    set(LUA_TARGET posix)
+  else()
+    set(LUA_TARGET generic)
+  endif()
+endif()
+
+set(LUA_CONFIGURE_COMMAND
+  sed -e "/^CC/s@gcc@${CMAKE_C_COMPILER} ${CMAKE_C_COMPILER_ARG1}@"
+      -e "/^CFLAGS/s@-O2@-g3@"
+      -e "s@-lreadline@@g"
+      -e "s@-lhistory@@g"
+      -e "s@-lncurses@@g"
+      -i ${DEPS_BUILD_DIR}/src/lua/src/Makefile &&
+  sed -e "/#define LUA_USE_READLINE/d"
+      -i ${DEPS_BUILD_DIR}/src/lua/src/luaconf.h)
+set(LUA_BUILD_COMMAND
+  ${MAKE_PRG} ${LUA_TARGET})
+set(LUA_INSTALL_COMMAND
+  ${MAKE_PRG} INSTALL_TOP=${DEPS_INSTALL_DIR} install)
+
+message(STATUS "Lua target is ${LUA_TARGET}")
+
+BuildLua(CONFIGURE_COMMAND ${LUA_CONFIGURE_COMMAND}
+  BUILD_COMMAND ${LUA_BUILD_COMMAND}
+  INSTALL_COMMAND ${LUA_INSTALL_COMMAND})
+list(APPEND THIRD_PARTY_DEPS lua)
+add_dependencies(lua busted)
+
+set(BUSTED ${DEPS_INSTALL_DIR}/bin/busted)
+set(BUSTED_LUA ${BUSTED}-lua)
+
+add_custom_command(OUTPUT ${BUSTED_LUA}
+  COMMAND sed -e 's/jit//g' < ${BUSTED} > ${BUSTED_LUA} && chmod +x ${BUSTED_LUA}
+  DEPENDS lua)
+add_custom_target(busted-lua
+  DEPENDS ${DEPS_INSTALL_DIR}/bin/busted-lua)
+
+list(APPEND THIRD_PARTY_DEPS busted-lua)