visual c++ - What do these common C++ compiler flags do? -


i'm starter in c++. i'm still confused flags in makefile. 

-c. -o. -wall. -g. -std=c++0x.

can 1 tell me these common flags do?

only last flag (compiler command option) compiler-specific. first 3 or 4 have been de facto standard since, well, or mid 1980s, think. of course there’s no guarantee particular compiler understand them, they’re not uncommon.

note: while visual c++ accepts - flag prefix notation, used / flag prefix, since that’s common convention in windows.

  • -c
    compile only, don't link.

  • -o
    specifies output file, e.g. executable. unfortunately deprecated visual c++ compiler. visual c++ use e.g. /fe.

  • -wall
    g++ practical warnings. visual c++ warnings including sillywarnings, , that's bunch!

  • -g
    generate debug information. supported many compilers not visual c++.

then,

  • -std=c++0x
    g++ compiler-specific option specifies sort of c++11 standard. recall difference -std=c++11, newer compiler versions accept both, former still permits g++-specific language extensions.

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