Add CMake; prepare basic structure

- Added Catch (downloaded automatically by cmake) for unit tests
- Added basic tests/ and src/ directories
- Added basic unit test example. Any changes to files other than main.cc
  in src/ will recompile the relevant tests as needed
- Added CMakeLists that compiles the project using cmake
- Moved the man page to docs/
- Moved old source file to src/
- Since libogg doesn't support cmake based builds, I've added also a
  module in CMakeModules that searches for it, but I haven't tested if
  it works yet...
- Haven't really touched Makefile - I've changed it only to refer to the
  new file locations

.gitignore

@@ -0,0 +1,2 @@
+/build
+tests/catch.h

CMakeLists.txt

@@ -0,0 +1,55 @@
+cmake_minimum_required (VERSION 2.8.8)
+project (opustags)
+set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD_REQUIRED on)
+set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/modules/")
+
+# ------------
+# Dependencies
+# ------------
+find_package(Ogg REQUIRED)
+include_directories(${ogg_INCLUDE_DIR})
+link_directories(${ogg_LIBRARY_DIRS})
+
+# --------------------
+# Global build options
+# --------------------
+if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wextra")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wold-style-cast")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14") # for MinGW-w64
+endif()
+
+# ------------
+# Source files
+# ------------
+set(CMAKE_SOURCE_DIR "${CMAKE_BINARY_DIR}/../")
+file(GLOB_RECURSE common_sources "${CMAKE_SOURCE_DIR}/src/*.cc")
+file(GLOB_RECURSE common_headers "${CMAKE_SOURCE_DIR}/src/*.h")
+file(GLOB_RECURSE test_sources "${CMAKE_SOURCE_DIR}/tests/*.cc")
+file(GLOB_RECURSE test_headers "${CMAKE_SOURCE_DIR}/tests/*.h")
+list(REMOVE_ITEM common_sources "${CMAKE_SOURCE_DIR}/src/main.cc")
+list(REMOVE_ITEM test_sources "${CMAKE_SOURCE_DIR}/tests/main.cc")
+
+# -------------------
+# 3rd party libraries
+# -------------------
+# Catch
+set(CATCH_PATH "${CMAKE_SOURCE_DIR}/tests/catch.h")
+if (NOT EXISTS "${CATCH_PATH}")
+    message("Downloading Catch...")
+    file(DOWNLOAD "http://raw.githubusercontent.com/philsquared/Catch/master/single_include/catch.hpp" "${CATCH_PATH}")
+endif()
+
+# -------------------
+# Linking definitions
+# -------------------
+add_library(common OBJECT ${common_sources} ${common_headers})
+add_executable(opustags "${CMAKE_SOURCE_DIR}/src/main.cc" $<TARGET_OBJECTS:common>)
+add_executable(run_tests "${CMAKE_SOURCE_DIR}/tests/main.cc" $<TARGET_OBJECTS:common> ${test_sources} ${test_headers})
+target_include_directories(common BEFORE PUBLIC "${CMAKE_SOURCE_DIR}/src")
+target_include_directories(opustags BEFORE PUBLIC "${CMAKE_SOURCE_DIR}/src")
+target_include_directories(run_tests BEFORE PUBLIC "${CMAKE_SOURCE_DIR}/src")
+target_include_directories(run_tests BEFORE PUBLIC "${CMAKE_SOURCE_DIR}/tests")

Makefile

@@ -5,10 +5,10 @@ LDFLAGS=-logg
 
 all: opustags
 
-opustags: opustags.c
+opustags: src/opustags.c
 
-man: opustags.1
-	gzip <opustags.1 >opustags.1.gz
+man: doc/opustags.1
+	gzip <doc/opustags.1 >opustags.1.gz
 
 install: opustags man
 	mkdir -p $(DESTDIR)/bin $(DESTDIR)/$(MANDEST)/man1

modules/FindOgg.cmake

@@ -0,0 +1,23 @@
+# Base Io build system
+# Written by Jeremy Tregunna <jeremy.tregunna@me.com>
+#
+# Find libogg.
+
+FIND_PATH(OGG_INCLUDE_DIR ogg/ogg.h)
+
+SET(OGG_NAMES ${OGG_NAMES} ogg libogg)
+FIND_LIBRARY(OGG_LIBRARY NAMES ${OGG_NAMES} PATH)
+
+IF(OGG_INCLUDE_DIR AND OGG_LIBRARY)
+	SET(OGG_FOUND TRUE)
+ENDIF(OGG_INCLUDE_DIR AND OGG_LIBRARY)
+
+IF(OGG_FOUND)
+	IF(NOT Ogg_FIND_QUIETLY)
+		MESSAGE(STATUS "Found Ogg: ${OGG_LIBRARY}")
+	ENDIF (NOT Ogg_FIND_QUIETLY)
+ELSE(OGG_FOUND)
+	IF(Ogg_FIND_REQUIRED)
+		MESSAGE(FATAL_ERROR "Could not find ogg")
+	ENDIF(Ogg_FIND_REQUIRED)
+ENDIF (OGG_FOUND)

src/dummy.cc

@@ -0,0 +1,6 @@
+#include "dummy.h"
+
+int opustags::return_one()
+{
+    return 1;
+}

src/dummy.h

@@ -0,0 +1,6 @@
+#pragma once
+
+namespace opustags
+{
+    int return_one();
+}

src/main.cc

@@ -0,0 +1,8 @@
+#include <iostream>
+#include "dummy.h"
+
+int main(int argc, const char **argv)
+{
+    std::cout << opustags::return_one() << std::endl;
+    return 0;
+}

tests/dummy_test.cc

@@ -0,0 +1,7 @@
+#include "dummy.h"
+#include "catch.h"
+
+TEST_CASE("A dummy test")
+{
+    REQUIRE(opustags::return_one() == 1);
+}

tests/main.cc

@@ -0,0 +1,2 @@
+#define CATCH_CONFIG_MAIN
+#include "catch.h"