Merge pull request #868 from alx741/ghc

ghc: add page

pages/common/ghc.md

@@ -0,0 +1,24 @@
+# ghc
+
+> The Glasgow Haskell Compiler.
+> Compiles and links Haskell source files.
+
+- Find and compile all modules in the current directory:
+
+`ghc Main`
+
+- Compile a single file:
+
+`ghc {{file.hs}}`
+
+- Compile using extra optimization:
+
+`ghc -O {{file.hs}}`
+
+- Stop compilation after generating object files (.o):
+
+`ghc -c {{file.hs}}`
+
+- Run Haskell interactive interpreter (REPL):
+
+`ghci`