Update cheatsheets

ocamlfind

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# ocamlfind
+
+> The findlib package manager for OCaml.
+> Simplifies linking executables with external libraries.
+> More information: <http://projects.camlcity.org/projects/findlib.html>.
+
+- Compile a source file to a native binary and link with packages:
+
+`ocamlfind ocamlopt -package {{package1}},{{package2}} -linkpkg -o {{path/to/executable}} {{path/to/source.ml}}`
+
+- Compile a source file to a bytecode binary and link with packages:
+
+`ocamlfind ocamlc -package {{package1}},{{package2}} -linkpkg -o {{path/to/executable}} {{path/to/source.ml}}`
+
+- Cross-compile for a different platform:
+
+`ocamlfind -toolchain {{cross-toolchain}} ocamlopt -o {{path/to/executable}} {{path/to/source.ml}}`