Update cheatsheets

clang

@@ -0,0 +1,33 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# clang
+
+> Compiler for C, C++, and Objective-C source files. Can be used as a drop-in replacement for GCC.
+> More information: <https://clang.llvm.org/docs/ClangCommandLineReference.html>.
+
+- Compile a source code file into an executable binary:
+
+`clang {{input_source.c}} -o {{output_executable}}`
+
+- Activate output of all errors and warnings:
+
+`clang {{input_source.c}} -Wall -o {{output_executable}}`
+
+- Include libraries located at a different path than the source file:
+
+`clang {{input_source.c}} -o {{output_executable}} -I{{header_path}} -L{{library_path}} -l{{library_name}}`
+
+- Compile source code into LLVM Intermediate Representation (IR):
+
+`clang -S -emit-llvm {{file.c}} -o {{file.ll}}`
+
+- Compile source code without linking:
+
+`clang -c {{input_source.c}}`
+
+- Optimize the compiled program for performance:
+
+`clang {{path/to/source.c}} -O{{1|2|3|fast}}`