What's your favorite g++ option? [closed]

Answer 1

We always use

g++ -Wall -Wextra ...

Answer 2

If you thought you caught everything, try -Wextra

Answer 3

“-Werror”: treats all warnings as errors so you have to fix them. Incredibly valuable.

Answer 4

-ansi
-pedantic

-D__STDC_FORMAT_MACROS
-D__STDC_CONSTANT_MACROS
-D__STDC_LIMIT_MACROS
-D_GNU_SOURCE
-D_REENTRANT

-Wall
-Wextra
-Wwrite-strings
-Winit-self
-Wcast-align
-Wcast-qual
-Wold-style-cast
-Wpointer-arith
-Wstrict-aliasing
-Wformat=2
-Wuninitialized
-Wmissing-declarations
-Woverloaded-virtual
-Wnon-virtual-dtor
-Wctor-dtor-privacy
-Wno-long-long

-O3
-ftree-vectorize
-ftree-vectorizer-verbose=2
-ffast-math
-fstrict-aliasing
-march=native/pentium4/nocona/core2
-msse2
-mfpmath=sse