GCC(the GNU Compiler Collection)

• GCC homepage at GNU project
• GCC Compiler Collection - Wikipedia

• GCC online documentation

• GCC related linux tools

  • ldd: see which dynamic library the program used.
  • nm: see the symbol in program
  • strip: make the program smaller.

• GCC Main parameters

  • -g: "*", Keep the debugging message in the compiled program.
  • -o: "*.o", Specify a target name, default is a.out.
  • -x language filename: Specify explicitly the language for the following input files (rather than letting the compiler choose a default based on the file name suffix).
  • -x none: Turn off any specification of a language.
  • -c: "*.o", Only preprocessing, complication, assemble,
  • -E: "*.txt", Only preprocessing, you may want to use gcc -E binarySearch.c > preprocessing.txt_, due to the fact it will generate a 800+ lines of code even a hello-world program.
  • -C: "*.txt", Only preprocessing, but save the comments information.
  • -S: "*.s", Stop after the stage of compilation proper, do not assemble.
  • -M: Generate information related to files.
  • -MM: Generate information related to files but ignore dependency caused by #include
  • OO: No optimization.
  • -O/-O1: Optimize code.
  • O2: Further optimization.
  • O3: More further optimization.
  • -shared: Generate shared object, file suffix is .so.
  • -static: Forbid shared link.