Init

.gitignore

@@ -0,0 +1 @@
+build

CMakeLists.txt

@@ -0,0 +1,19 @@
+cmake_minimum_required(VERSION 3.10)
+
+project(Hello VERSION 1.0)
+
+# add a lib
+add_subdirectory(alib)
+
+add_executable(Hello main.c)
+
+target_link_libraries(Hello PUBLIC alib)
+
+# Version number thing
+configure_file(config.h.in config.h)
+target_include_directories(Hello PUBLIC
+	${PROJECT_BINARY_DIR}
+)
+
+install(TARGETS Hello DESTINATION bin)
+install(FILES ${PROJECT_BINARY_DIR}/config.h DESTINATION include)

CMakePresets.json

@@ -0,0 +1,23 @@
+{
+  "version": 2,
+  "cmakeMinimumRequired": {
+    "major": 3,
+    "minor": 10,
+    "patch": 0
+  },
+  "configurePresets": [
+    {
+      "name": "default",
+      "displayName": "Default Config",
+      "description": "Default build using Ninja generator",
+      "generator": "Ninja",
+      "binaryDir": "${sourceDir}/build/default"
+    }
+  ],
+  "buildPresets": [
+    {
+      "name": "default",
+      "configurePreset": "default"
+    }
+  ]
+}

README.md

@@ -0,0 +1,9 @@
+# build
+
+Use preset from `CMakePresets.json`
+
+	cmake -S . --preset=default
+
+And then build
+
+	cmake --build build/default

alib/CMakeLists.txt

@@ -0,0 +1,7 @@
+add_library(alib calc.c)
+target_include_directories(alib
+	INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+install(TARGETS alib DESTINATION lib)
+install(FILES calc.h DESTINATION include)

alib/calc.c

@@ -0,0 +1,5 @@
+#include "calc.h"
+
+int docalc() {
+	return 2;
+}

alib/calc.h

@@ -0,0 +1 @@
+int docalc();

config.h.in

@@ -0,0 +1,3 @@
+// the configured options and settings for Hello
+#define Hello_VERSION_MAJOR @Hello_VERSION_MAJOR@
+#define Hello_VERSION_MINOR @Hello_VERSION_MINOR@

main.c

@@ -0,0 +1,9 @@
+#include <stdio.h>
+#include "config.h"
+#include "calc.h"
+
+int main() {
+	printf("Version: %d.%d\n", Hello_VERSION_MAJOR, Hello_VERSION_MINOR);
+	printf("Hello World; %d\n", docalc());
+	return 0;
+}