Setup proper CMake for TSC

There are some incremental build issues to figure out but this mostly works.

Author: aciidgh

.gitignore

@@ -4,3 +4,4 @@
 /*.xcodeproj
 xcuserdata/
 .swiftpm
+build

CMakeLists.txt

@@ -0,0 +1,20 @@
+cmake_minimum_required(VERSION 3.15.1)
+
+project(SwiftTSC LANGUAGES C Swift)
+ 
+set(SWIFT_VERSION 5)
+set(CMAKE_Swift_LANGUAGE_VERSION ${SWIFT_VERSION})
+if(CMAKE_VERSION VERSION_LESS 3.16)
+    add_compile_options($<$<COMPILE_LANGUAGE:Swift>:-swift-version$<SEMICOLON>${SWIFT_VERSION}>)
+endif()
+
+set(CMAKE_Swift_MODULE_DIRECTORY ${CMAKE_BINARY_DIR}/swift)
+ 
+set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
+set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+
+option(BUILD_SHARED_LIBS "Build shared libraryes by default" YES)
+
+add_subdirectory(Sources)
+add_subdirectory(cmake/modules)

Sources/CMakeLists.txt

@@ -0,0 +1,4 @@
+add_subdirectory(TSCclibc)
+add_subdirectory(TSCLibc)
+add_subdirectory(TSCBasic)
+add_subdirectory(TSCUtility)

Sources/TSCBasic/CMakeLists.txt

@@ -55,6 +55,8 @@ target_link_libraries(TSCBasic PUBLIC
 set_target_properties(TSCBasic PROPERTIES
   INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
 
+set_property(GLOBAL APPEND PROPERTY TSC_EXPORTS TSCBasic)
+
 install(TARGETS TSCBasic
   ARCHIVE DESTINATION lib
   LIBRARY DESTINATION lib

Sources/TSCLibc/CMakeLists.txt

@@ -8,14 +8,19 @@
 
 add_library(TSCLibc
   libc.swift)
-target_compile_options(TSCLibc PRIVATE
-  -autolink-force-load)
+
+if(CMAKE_SYSTEM_NAME STREQUAL Windows)
+  target_compile_options(TSCLibc PRIVATE
+    -autolink-force-load)
+endif()
 target_link_libraries(TSCLibc PUBLIC
-  clibc)
+  TSCclibc)
 # NOTE(compnerd) workaround for CMake not setting up include flags yet
 set_target_properties(TSCLibc PROPERTIES
   INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
 
+set_property(GLOBAL APPEND PROPERTY TSC_EXPORTS TSCLibc)
+
 install(TARGETS TSCLibc
   ARCHIVE DESTINATION lib
   LIBRARY DESTINATION lib

Sources/TSCUtility/CMakeLists.txt

@@ -34,3 +34,5 @@ target_link_libraries(TSCUtility PUBLIC
 # NOTE(compnerd) workaround for CMake not setting up include flags yet
 set_target_properties(TSCUtility PROPERTIES
   INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+
+set_property(GLOBAL APPEND PROPERTY TSC_EXPORTS TSCUtility)

Sources/TSCclibc/CMakeLists.txt

@@ -6,12 +6,14 @@
 # See http://swift.org/LICENSE.txt for license information
 # See http://swift.org/CONTRIBUTORS.txt for Swift project authors
 
-add_library(clibc STATIC
+add_library(TSCclibc STATIC
   libc.c)
-target_include_directories(clibc PUBLIC
+target_include_directories(TSCclibc PUBLIC
   include)
 
 if(NOT BUILD_SHARED_LIBS)
-  install(TARGETS clibc
+  install(TARGETS TSCclibc
     ARCHIVE DESTINATION lib)
 endif()
+
+set_property(GLOBAL APPEND PROPERTY TSC_EXPORTS TSCclibc)

Utilities/build-using-cmake

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+set -eu
+
+__dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+SRCROOT="`cd "${__dir}/..";pwd`"
+echo "SRCROOT is $SRCROOT"
+
+BUILD_DIR=$SRCROOT/build
+echo "BUILD_DIR is $BUILD_DIR"
+
+mkdir -p $BUILD_DIR
+cd $BUILD_DIR
+
+CMAKE_Swift_FLAGS=""
+if (uname | grep -qi darwin); then
+    CMAKE_Swift_FLAGS="-sdk $(xcrun --sdk macosx --show-sdk-path)"
+fi
+
+set -x
+cmake \
+    -G Ninja \
+    -DCMAKE_BUILD_TYPE=Debug \
+    -DCMAKE_Swift_FLAGS="$CMAKE_Swift_FLAGS" \
+    $SRCROOT
+
+ninja

cmake/modules/CMakeLists.txt

@@ -0,0 +1,6 @@
+set(TSC_EXPORTS_FILE ${CMAKE_CURRENT_BINARY_DIR}/TSCExports.cmake)
+configure_file(TSCConfig.cmake.in
+    ${CMAKE_CURRENT_BINARY_DIR}/TSCConfig.cmake)
+
+get_property(TSC_EXPORTS GLOBAL PROPERTY TSC_EXPORTS)
+export(TARGETS ${TSC_EXPORTS} FILE ${TSC_EXPORTS_FILE})

cmake/modules/TSCConfig.cmake.in

@@ -0,0 +1 @@
+include(@TSC_EXPORTS_FILE@)