Question

Often in C under gcc, I will start with the following set of warning flags (painfully assembled from multiple sources):

-Wall -Wextra -Wformat-nonliteral -Wcast-align -Wpointer-arith -Wbad-function-cast \
-Wmissing-prototypes -Wstrict-prototypes -Wmissing-declarations -Winline -Wundef \
-Wnested-externs -Wcast-qual -Wshadow -Wwrite-strings -Wno-unused-parameter \
-Wfloat-equal -pedantic -ansi

I will build (at least my debug versions) with this set of warnings and fix everything I possibly can (usually everything), and then only remove flags if they are either not relevant or not fixable (almost never the case). Sometimes, I’ll also add -Werror if I have to step away while compiling.

I’m just picking up C++ (yes, I’m 15 years behind the times), and I’d like to start off on the right foot.

My question is: Does someone have a precompiled similar set of complete warning flags for C++ under g++? (I know many of them will be the same.)

Answer 1

D’oh, all of my original searches turned up 99% of posts on how to suppress warnings (scarily enough), but I just ran across this comment, which has this lovely set of flags (some less relevant):

Cross checked with:

http://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html

-g -O -Wall -Weffc++ -pedantic  \
-pedantic-errors -Wextra -Waggregate-return -Wcast-align \
-Wcast-qual -Wconversion \
-Wdisabled-optimization \
-Werror -Wfloat-equal -Wformat=2 \
-Wformat-nonliteral -Wformat-security  \
-Wformat-y2k \
-Wimplicit  -Wimport  -Winit-self  -Winline \
-Winvalid-pch   \
-Wlong-long \
-Wmissing-field-initializers -Wmissing-format-attribute   \
-Wmissing-include-dirs -Wmissing-noreturn \
-Wpacked  -Wpadded -Wpointer-arith \
-Wredundant-decls \
-Wshadow -Wstack-protector \
-Wstrict-aliasing=2 -Wswitch-default \
-Wswitch-enum \
-Wunreachable-code -Wunused \
-Wunused-parameter \
-Wvariadic-macros \
-Wwrite-strings

So, I think that’s a good starting point. Didn’t realize this was a dupe, but at least it was deeply buried. 🙂