[Bug-gnulib] Re: gcc options for testing dist?

[Simon Josefsson]

address@hidden (Karl Berry) writes:

> What gcc options do you-all recommend when testing a distribution
> (before releasing it)?

I went over the GCC manual some time ago and settled with:

CFLAGS="-g -O -W -Wall -Wunused -Wno-unused-parameter 
-Wimplicit-function-declaration -Wcomment -Wchar-subscripts -Wimplicit-int 
-Wimplicit -Wmain -Wreturn-type -Wswitch -Wtrigraphs -Wunknown-pragmas 
-Wmultichar -Wfloat-equal -Wpointer-arith -Wbad-function-cast -Wcast-align 
-Wsign-compare -Waggregate-return -Wmissing-prototypes -Wmissing-declarations 
-Wno-deprecated-declarations -Wpacked -Wpadded -Wnested-externs -Winline 
-Wlong-long  -Wparentheses -Wsequence-point -Wmissing-braces"

But I usually test with "-ansi -pedantic" as well, and test on a few
non-GCC compilers too (Sun, HP-UX, IRIX, AIX).  My main problem with
"-ansi -pedantic" is that it (I think) gives warning about absent
initializers when declaring constant structs (such fields should,
IIRC, by the standard always be initialized to 0).