Set up build tools

.gitignore

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+build/*

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.13)
+project(gemhadar LANGUAGES C)
+
+add_executable(gemhadar
+    "main.c"
+)
+set_property(TARGET gemhadar PROPERTY C_STANDARD 11)

clang-toolchain.cmake

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+set(CMAKE_C_COMPILER clang)
+set(CMAKE_C_FLAGS "-pedantic -Wall -Wextra")

main.c

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+#include <stdio.h>
+#include <stdlib.h>
+
+int main(int argc, char **argv)
+{
+    return EXIT_SUCCESS;
+}