View source for Useful GCC compiler flags

{| class="wikitable"
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!Flag
!What it does
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| -O2
|Turn on all optional optimisations except or [[loop unrolling]], [[function inlining]], and strict [[aliasing]] optimizations
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| -pipe
|Speeds up compilation (has no effect on outputted file). Tells the compiler to use pipes rather than temporary files
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| -Wall
|Enable all compiler warnings (helps to spot potentially troublesome code)
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| -Wextra
|Print extra warning messages, specifically: A pointer is compared against integer zero with < , <= , > , or >= . (C++ only) An enumerator and a non-enumerator both appear in a conditional expression. (C++ only) Ambiguous virtual bases
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| -m16
|Generate 16-bit code
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| -ffreestanding
|Only use those features available in the [[freestanding environment]] 
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| -nostdlib
|Don't include the standard library
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| -masm=intel
|Use [[Intel syntax]] for inline assembly rather than [[AT&T syntax]] (does this work?)
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| -fno-pic
|Tells the compiler to not generate position independent code
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| -mno-sse
|Floating point arguments to be passed onto the stack rather than sse registers.
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| -mno-sse2
|Floating point arguments to be passed onto the stack rather than sse2 registers.
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| -fno-stack-protector
|Disables [[stack protection]]
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| -I.
|Look for header files in the current folder
|}