GitHub Actions

* Add MSVC support
* Update README.md to reflect changes
* Implement ci.yml
* Add missing argument to usage statement

4 files changed, 58 insertions, 3 deletions

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..be6a633
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,38 @@
+name: ci
+
+#on: [push, pull_request]
+on: [push]
+
+jobs:
+  unix:
+    name: "${{ matrix.os }}"
+    runs-on: "${{ matrix.os }}"
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macOS-latest]
+    
+    steps:
+    - uses: actions/checkout@v1
+    - name: configure
+      run: cmake .
+    - name: make
+      run: make
+    - name: test
+      run: ctest -V
+    - name: install
+      run: sudo make install
+
+  windows:
+    name: "${{ matrix.os }}"
+    runs-on: "${{ matrix.os }}"
+    strategy:
+      matrix:
+        os: [windows-latest]
+    steps:
+      - uses: actions/checkout@v1
+      - name: configure
+        run: cmake .
+      - name: make
+        run: cmake --build .
+      - name: test
+        run: ctest -V
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3d7c338..fef8144 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 2.8.11)
 project(relocate C)
 set(VERSION "1.2.2")
 set(CMAKE_C_STANDARD 99)
-if(CMAKE_CL_64)
+if(MSVC)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_CRT_SECURE_NO_WARNINGS /Wall")
 else()
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99 -Wall -Wextra")
diff --git a/README.md b/README.md
index 551118b..fea1715 100644
--- a/README.md
+++ b/README.md
@@ -2,21 +2,38 @@
 
 Replace strings in binary executables and data files.
 
+![](https://github.com/jhunkeler/reloc/workflows/ci/badge.svg)
+
 ## System Requirements
 
 * `gcc`
+* _or_ `clang`
+* _or_ Microsoft Visual Studio (`cl.exe`)p
 * `>=cmake-2.18.11`
 
 ## Installing
 
+### Linux / MacOS
+
 ```bash
 $ git clone https://github.com/jhunkeler/reloc
 $ mkdir build
 $ cd build
-$ cmake -DCMAKE_INSTALL_PREFIX=/some/place ..
+$ cmake -DCMAKE_INSTALL_PREFIX=/some/place -DCMAKE_BUILD_TYPE=Release ..
 $ make install
 ```
 
+### Windows
+
+```cmd
+> git clone https://github.com/jhunkeler/reloc
+> cd reloc
+> mkdir build
+> cd build
+> cmake -DCMAKE_INSTALL_PREFIX=c:\some\place -DCMAKE_BUILD_TYPE=Release ..
+> cmake --build . --target INSTALL
+```
+
 ## Usage
 ```
 $ reloc <str1> <str2> <input_file> <output_file>
diff --git a/main.c b/main.c
index 1db9f27..c9e9988 100644
--- a/main.c
+++ b/main.c
@@ -6,7 +6,7 @@ void show_version() {
 }
 
 void usage(char *program) {
-    printf("usage: %s [-V] <str1> <str2> <input_file> <output_file>\n"
+    printf("usage: %s [-hV] <str1> <str2> <input_file> <output_file>\n"
            "\n"
            "Options:\n"
            "--help    (-h) - Display this help message\n"