build: support cmake

Refs: nodejs#12425

.gitignore

@@ -115,3 +115,7 @@ icu_config.gypi
 deps/uv/.github/
 deps/uv/docs/code/
 deps/uv/docs/src/guide/
+
+# CMake
+CMakeLists.txt
+cmake-build-*

BUILDING.md

@@ -111,10 +111,17 @@ $ ./configure
 $ make -j4
 ```
 
-Running `make` with the `-j4` flag will cause it to run 4 compilation jobs
+Alternatively, to build Node.js via [CMake](https://cmake.org/):
+```console
+$ ./configure
+$ make configure-cmake-[debug/release]
+$ cmake --build cmake-build-[debug/release] --target node -- -j 4
+```
+
+Running `make` or `cmake` with the `-j4` flag will cause it to run 4 compilation jobs
 concurrently which may significantly reduce build time. The number after `-j`
 can be changed to best suit the number of processor cores on your machine. If
-you run into problems running `make` with concurrency, try running it without
+you run into problems running `make` or `cmake` with concurrency, try running it without
 the `-j4` flag. See the
 [GNU Make Documentation](https://www.gnu.org/software/make/manual/html_node/Parallel.html)
 for more information.

Makefile

@@ -86,6 +86,15 @@ out/Makefile: common.gypi deps/uv/uv.gyp deps/http_parser/http_parser.gyp \
               config.gypi
 	$(PYTHON) tools/gyp_node.py -f make
 
+generate-cmake-files:
+	$(PYTHON) tools/gyp_node.py -f cmake && $(PYTHON) tools/fix-cmake-lists.py
+
+configure-cmake-debug: generate-cmake-files
+	cp -f out/Debug/CMakeLists.txt .
+
+configure-cmake-release: generate-cmake-files
+	cp -f out/Release/CMakeLists.txt .
+
 config.gypi: configure
 	$(error Missing or stale $@, please run ./$<)
 

tools/fix-cmake-lists.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python
+import os
+
+script_dir = os.path.dirname(__file__)
+node_root  = os.path.normpath(os.path.join(script_dir, os.pardir))
+output_dir = os.path.join(os.path.abspath(node_root), 'out')
+
+cmake_debug_path = os.path.join(output_dir, 'Debug', 'CMakeLists.txt')
+cmake_release_path = os.path.join(output_dir, 'Release', 'CMakeLists.txt')
+
+def fix_cmake_list(path):
+  with open(path, 'r') as f:
+    fixed_lines = []
+    for line in f.readlines():
+      line = line.replace('"../../', '"')
+      line = line.replace('${CMAKE_CURRENT_LIST_DIR}/../..', '${CMAKE_CURRENT_LIST_DIR}')
+      line = line.replace('  "src/tracing/trace_event.hsrc/util.h"\n', '  "src/tracing/trace_event.h"\n  "src/util.h"\n')
+      line = line.replace('"deps/include/v8-inspector.h"', '"deps/v8/include/v8-inspector.h"')
+      line = line.replace('"deps/include/v8-inspector-protocol.h"', '"deps/v8/include/v8-inspector-protocol.h"')
+      line = line.replace('"${builddir}/obj.target/node/gen', '"${builddir}/CMakeFiles/node.dir/obj/gen')
+      line = line.replace('"${builddir}/obj.target/node', '"${builddir}/CMakeFiles/node.dir')
+      fixed_lines.append(line)
+
+  with open(path, 'w') as f:
+    f.writelines(fixed_lines)
+
+def fix_cmake_lists():
+  fix_cmake_list(cmake_debug_path)
+  fix_cmake_list(cmake_release_path)
+
+if __name__ == '__main__':
+  fix_cmake_lists()