From f07deeaa7ef30196b750cacd511699f02ac1395d Mon Sep 17 00:00:00 2001
From: Mark de Wever <koraq@xs4all.nl>
Date: Thu, 6 Oct 2022 07:56:42 +0200
Subject: [PATCH] Adds CMake support

Adds a simple CMake script and makes the tests portable with both
Windows and Linux support.
---
 .gitignore                        |  2 ++
 CMakeLists.txt                    | 36 +++++++++++++++++++++++++++++++
 README.md                         |  4 ++++
 regression-tests/run-tests.bat.in | 17 +++++++++++++++
 regression-tests/run-tests.sh.in  | 23 ++++++++++++++++++++
 5 files changed, 82 insertions(+)
 create mode 100644 CMakeLists.txt
 create mode 100644 regression-tests/run-tests.bat.in
 create mode 100644 regression-tests/run-tests.sh.in

diff --git a/.gitignore b/.gitignore
index 93669d9eb4..7115ee7a10 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,9 +16,11 @@
 *.sln
 *.exe
 *.txt
+!CMakeLists.txt
 *.db-shm
 *.db-wal
 *.opendb
 *.vsidx
 *.lock
 .editorconfig
+/build
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000000..d29fffac39
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,36 @@
+project(cppfront)
+cmake_minimum_required(VERSION 3.20)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED YES)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+add_executable(cppfront source/cppfront.cpp)
+
+# The test scripts are generated in two steps - configure to replace the
+# variables, - geneated the configured output to replace the generator
+# expressions.
+configure_file(regression-tests/run-tests.bat.in
+               ${CMAKE_BINARY_DIR}/run-tests.bat.in @ONLY)
+
+file(
+  GENERATE
+  OUTPUT run-tests.bat
+  INPUT ${CMAKE_BINARY_DIR}/run-tests.bat.in)
+
+configure_file(regression-tests/run-tests.sh.in
+               ${CMAKE_BINARY_DIR}/run-tests.sh.in @ONLY)
+
+file(
+  GENERATE
+  OUTPUT run-tests.sh
+  INPUT ${CMAKE_BINARY_DIR}/run-tests.sh.in
+  FILE_PERMISSIONS
+  OWNER_READ
+  OWNER_WRITE
+  OWNER_EXECUTE
+  GROUP_READ
+  GROUP_WRITE
+  GROUP_EXECUTE
+  WORLD_READ
+  WORLD_EXECUTE)
diff --git a/README.md b/README.md
index a8ff95d06e..45ba165439 100644
--- a/README.md
+++ b/README.md
@@ -83,6 +83,10 @@ Cppfront builds with any major C++20 compiler.
 
     clang++-12 cppfront.cpp -std=c++20 -o cppfront
 
+### CMake support
+
+    Alternatively the code can be build using CMake. The build directory will contain the regression test scripts.
+
 ## How do I build my `.cpp2` file?
 
 Run `cppfront your.cpp2`, then run the generated `your.cpp` through any major C++20 compiler after putting `/cppfront/include` in the path so it can find `cpp2util.h`.
diff --git a/regression-tests/run-tests.bat.in b/regression-tests/run-tests.bat.in
new file mode 100644
index 0000000000..251cbc0fa2
--- /dev/null
+++ b/regression-tests/run-tests.bat.in
@@ -0,0 +1,17 @@
+@echo off
+copy @CMAKE_SOURCE_DIR@\*.cpp2 .
+set count=0
+for %%f in (mixed-*.cpp2) do (
+    echo Starting cppfront.exe %%f
+    $<TARGET_FILE:cppfront> %%f > %%f.output 2>&1
+    del %%f
+    set /a count+=1
+)
+for %%f in (pure2-*.cpp2) do (
+    echo Starting cppfront.exe %%f -p
+    $<TARGET_FILE:cppfront> %%f -p > %%f.output 2>&1
+    del %%f
+    set /a count+=1
+)
+echo Done: %count% tests
+
diff --git a/regression-tests/run-tests.sh.in b/regression-tests/run-tests.sh.in
new file mode 100644
index 0000000000..4ecd1dd068
--- /dev/null
+++ b/regression-tests/run-tests.sh.in
@@ -0,0 +1,23 @@
+#!/bin/sh
+
+set -e
+
+cp @CMAKE_SOURCE_DIR@/regression-tests/*.cpp2 .
+count=0
+
+for f in mixed-*.cpp2
+do
+    echo Starting cppfront $f
+    $<TARGET_FILE:cppfront> $f > $f.output 2>&1
+    rm $f
+    count=$((count+1))
+done
+
+for f in pure2-*.cpp2
+do
+    echo Starting cppfront $f -p
+    $<TARGET_FILE:cppfront> $f -p > $f.output 2>&1
+    rm $f
+    count=$((count+1))
+done
+echo Done: $count tests