build: remove CMAKE_CROSSCOMPILING code #18914

This is rarely, if ever, used and certainly not tested. It's likely this
isn't functional anymore.

CMakeLists.txt

@@ -71,13 +71,8 @@ else()
   endif()
 endif()
 
-if(CMAKE_CROSSCOMPILING AND NOT UNIX)
-  list(INSERT CMAKE_FIND_ROOT_PATH 0 ${DEPS_PREFIX})
-  list(INSERT CMAKE_PREFIX_PATH 0 ${DEPS_PREFIX}/../host/bin)
-else()
-  list(INSERT CMAKE_PREFIX_PATH 0 ${DEPS_PREFIX})
-  set(ENV{PKG_CONFIG_PATH} "$ENV{PKG_CONFIG_PATH}:${DEPS_PREFIX}/lib/pkgconfig")
-endif()
+list(INSERT CMAKE_PREFIX_PATH 0 ${DEPS_PREFIX})
+set(ENV{PKG_CONFIG_PATH} "$ENV{PKG_CONFIG_PATH}:${DEPS_PREFIX}/lib/pkgconfig")
 
 # used for check_c_compiler_flag
 include(CheckCCompilerFlag)

third-party/CMakeLists.txt

@@ -119,23 +119,11 @@ if(CMAKE_OSX_SYSROOT)
   endif()
 endif()
 
-# Cross compiling: use these for dependencies built for the
-# HOST system, when not crosscompiling these should be the
-# same as DEPS_*. Except when targeting Unix in which case
-# want all the dependencies to use the same compiler.
-if(CMAKE_CROSSCOMPILING AND NOT UNIX)
-  set(HOSTDEPS_INSTALL_DIR "${CMAKE_BINARY_DIR}/host")
-  set(HOSTDEPS_BIN_DIR "${HOSTDEPS_INSTALL_DIR}/bin")
-  set(HOSTDEPS_LIB_DIR "${HOSTDEPS_INSTALL_DIR}/lib")
-  set(HOSTDEPS_C_COMPILER "${HOST_C_COMPILER}")
-  set(HOSTDEPS_CXX_COMPILER "${HOST_CXX_COMPILER}")
-else()
-  set(HOSTDEPS_INSTALL_DIR "${DEPS_INSTALL_DIR}")
-  set(HOSTDEPS_BIN_DIR "${DEPS_BIN_DIR}")
-  set(HOSTDEPS_LIB_DIR "${DEPS_LIB_DIR}")
-  set(HOSTDEPS_C_COMPILER "${DEPS_C_COMPILER}")
-  set(HOSTDEPS_CXX_COMPILER "${DEPS_CXX_COMPILER}")
-endif()
+set(HOSTDEPS_INSTALL_DIR "${DEPS_INSTALL_DIR}")
+set(HOSTDEPS_BIN_DIR "${DEPS_BIN_DIR}")
+set(HOSTDEPS_LIB_DIR "${DEPS_LIB_DIR}")
+set(HOSTDEPS_C_COMPILER "${DEPS_C_COMPILER}")
+set(HOSTDEPS_CXX_COMPILER "${DEPS_CXX_COMPILER}")
 
 include(ExternalProject)
 
@@ -222,7 +210,7 @@ if(USE_BUNDLED_LUAJIT)
   include(BuildLuajit)
 endif()
 
-if(USE_BUNDLED_LUA AND NOT CMAKE_CROSSCOMPILING)
+if(USE_BUNDLED_LUA)
   include(BuildLua)
 endif()
 

third-party/cmake/BuildLibuv.cmake

@@ -45,17 +45,6 @@ if(UNIX)
     CONFIGURE_COMMAND ${UNIX_CFGCMD} MAKE=${MAKE_PRG}
     INSTALL_COMMAND ${MAKE_PRG} V=1 install)
 
-elseif(MINGW AND CMAKE_CROSSCOMPILING)
-  # Build libuv for the host
-  BuildLibuv(TARGET libuv_host
-    CONFIGURE_COMMAND sh ${DEPS_BUILD_DIR}/src/libuv_host/autogen.sh && ${DEPS_BUILD_DIR}/src/libuv_host/configure --with-pic --disable-shared --prefix=${HOSTDEPS_INSTALL_DIR} CC=${HOST_C_COMPILER}
-    INSTALL_COMMAND ${MAKE_PRG} V=1 install)
-
-  # Build libuv for the target
-  BuildLibuv(
-    CONFIGURE_COMMAND ${UNIX_CFGCMD} --host=${CROSS_TARGET}
-    INSTALL_COMMAND ${MAKE_PRG} V=1 install)
-
 elseif(WIN32)
 
   set(UV_OUTPUT_DIR ${DEPS_BUILD_DIR}/src/libuv/${CMAKE_BUILD_TYPE})

third-party/cmake/BuildLuajit.cmake

@@ -76,29 +76,6 @@ if(UNIX)
     CC=${DEPS_C_COMPILER} PREFIX=${DEPS_INSTALL_DIR}
     ${DEPLOYMENT_TARGET})
 
-elseif(MINGW AND CMAKE_CROSSCOMPILING)
-
-  # Build luajit for the host
-  BuildLuaJit(TARGET luajit_host
-    CONFIGURE_COMMAND ""
-    BUILD_COMMAND ""
-    INSTALL_COMMAND ${INSTALLCMD_UNIX}
-      CC=${HOST_C_COMPILER} PREFIX=${HOSTDEPS_INSTALL_DIR})
-
-  # Build luajit for the target
-  BuildLuaJit(
-    # Similar to Unix + cross - fPIC
-    INSTALL_COMMAND
-      ${MAKE_PRG} PREFIX=${DEPS_INSTALL_DIR}
-        BUILDMODE=static install
-        TARGET_SYS=${CMAKE_SYSTEM_NAME}
-        CROSS=${CROSS_TARGET}-
-        HOST_CC=${HOST_C_COMPILER} HOST_CFLAGS=${HOST_C_FLAGS}
-        HOST_LDFLAGS=${HOST_EXE_LINKER_FLAGS}
-        FILE_T=luajit.exe
-        Q=
-        INSTALL_TSYMNAME=luajit.exe)
-
 elseif(MINGW)
 
   if(CMAKE_GENERATOR MATCHES "Ninja")

third-party/cmake/BuildLuarocks.cmake

@@ -56,7 +56,7 @@ endif()
 # Defaults to 5.1 for bundled LuaJIT/Lua.
 set(LUA_VERSION "5.1")
 
-if(UNIX OR (MINGW AND CMAKE_CROSSCOMPILING))
+if(UNIX)
 
   if(USE_BUNDLED_LUAJIT)
     list(APPEND LUAROCKS_OPTS
@@ -123,9 +123,6 @@ list(APPEND THIRD_PARTY_DEPS luarocks)
 
 if(USE_BUNDLED_LUAJIT)
   add_dependencies(luarocks luajit)
-  if(MINGW AND CMAKE_CROSSCOMPILING)
-    add_dependencies(luarocks luajit_host)
-  endif()
 elseif(USE_BUNDLED_LUA)
   add_dependencies(luarocks lua)
 endif()
@@ -196,9 +193,6 @@ if(USE_BUNDLED_BUSTED)
   set(LUV_DEPS luacheck)
   if(USE_BUNDLED_LUV)
     list(APPEND LUV_DEPS luv-static lua-compat-5.3)
-    if(MINGW AND CMAKE_CROSSCOMPILING)
-      list(APPEND LUV_DEPS libuv_host)
-    endif()
     set(LUV_ARGS "CFLAGS=-O0 -g3 -fPIC")
     if(USE_BUNDLED_LIBUV)
       list(APPEND LUV_ARGS LIBUV_DIR=${HOSTDEPS_INSTALL_DIR})

third-party/cmake/BuildLuv.cmake

@@ -91,16 +91,7 @@ if(USE_BUNDLED_LIBUV)
     -DCMAKE_PREFIX_PATH=${DEPS_INSTALL_DIR})
 endif()
 
-if(MINGW AND CMAKE_CROSSCOMPILING)
-  get_filename_component(TOOLCHAIN ${CMAKE_TOOLCHAIN_FILE} REALPATH)
-  set(LUV_CONFIGURE_COMMAND
-    ${LUV_CONFIGURE_COMMAND_COMMON}
-    # Pass toolchain
-    -DCMAKE_TOOLCHAIN_FILE=${TOOLCHAIN}
-    "-DCMAKE_C_FLAGS:STRING=${LUV_INCLUDE_FLAGS} -D_WIN32_WINNT=0x0600"
-    # Hack to avoid -rdynamic in Mingw
-    -DCMAKE_SHARED_LIBRARY_LINK_C_FLAGS="")
-elseif(MSVC)
+if(MSVC)
   set(LUV_CONFIGURE_COMMAND
     ${LUV_CONFIGURE_COMMAND_COMMON}
     -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}

third-party/cmake/BuildMsgpack.cmake

@@ -42,18 +42,7 @@ set(MSGPACK_CONFIGURE_COMMAND ${CMAKE_COMMAND} ${DEPS_BUILD_DIR}/src/msgpack
 set(MSGPACK_BUILD_COMMAND ${CMAKE_COMMAND} --build . --config ${CMAKE_BUILD_TYPE})
 set(MSGPACK_INSTALL_COMMAND ${CMAKE_COMMAND} --build . --target install --config ${CMAKE_BUILD_TYPE})
 
-if(MINGW AND CMAKE_CROSSCOMPILING)
-  get_filename_component(TOOLCHAIN ${CMAKE_TOOLCHAIN_FILE} REALPATH)
-  set(MSGPACK_CONFIGURE_COMMAND ${CMAKE_COMMAND} ${DEPS_BUILD_DIR}/src/msgpack
-    -DMSGPACK_BUILD_TESTS=OFF
-    -DMSGPACK_BUILD_EXAMPLES=OFF
-    -DCMAKE_INSTALL_PREFIX=${DEPS_INSTALL_DIR}
-    # Pass toolchain
-    -DCMAKE_TOOLCHAIN_FILE=${TOOLCHAIN}
-    -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
-    # Hack to avoid -rdynamic in Mingw
-    -DCMAKE_SHARED_LIBRARY_LINK_C_FLAGS="")
-elseif(MSVC)
+if(MSVC)
   # Same as Unix without fPIC
   set(MSGPACK_CONFIGURE_COMMAND ${CMAKE_COMMAND} ${DEPS_BUILD_DIR}/src/msgpack
     -DMSGPACK_BUILD_TESTS=OFF