On Sun, 10 Jan 2010, Dr. David Kirkby wrote:
Ralf Wildenhues wrote:
Hello David,
* Dr. David Kirkby wrote on Thu, Dec 24, 2009 at 05:38:23PM CET:
> I'm helping on the Sage maths project
>
> http://www.sagemath.org/
>
> where there are a large number of packages built, most of which ignore
> CFLAGS. (Quite a few ignore CC and CXX too!) I'd like to display all the
> warnings, but its hard when people overwrite CFLAGS.
>
> Is there a way I can build gcc such that effectively "-Wall" is enabled
> all the time?
I hate to be stating the obvious, but why not use a wrapper script?
mv gcc gcc.real
cat >gcc <<\EOF
#! /bin/sh
exec gcc.real -Wall "$@"
EOF
or just put one early in your $PATH. Depending on your needs, it might
have to be a bit more complex (put -Wall at the end if you care about
overriding -Wno-all and some other flags, for example; or only add -Wall
if -c is also seen, or similarly).
Cheers,
Ralf
I've tried this, and it works in 90% of cases, but not all. 'sqlite' is once
such package which always gives errors if I try to build like this. The
errors are like "no newline" or something like that. So I stuck a new line
in, but it still does not work.
Here's one such error, where
make[2]: Entering directory
`/export/home/drkirkby/sage-4.3.1.alpha1/spkg/build/sqlite-3.6.19.p0/src'
if /bin/sh ./libtool --tag=CC --mode=compile gcc -DPACKAGE_NAME=\"sqlite\"
-DPACKAGE_TARNAME=\"sqlite\" -DPACKAGE_VERSION=\"3.6.19\"
-DPACKAGE_STRING=\"sqlite\ 3.6.19\"
-DPACKAGE_BUGREPORT=\"http://www.sqlite.org\"; -DPACKAGE=\"sqlite\"
-DVERSION=\"3.6.19\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1
-DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1
-DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1
-DHAVE_DLFCN_H=1 -DHAVE_FDATASYNC=1 -DHAVE_USLEEP=1 -DHAVE_LOCALTIME_R=1
-DHAVE_GMTIME_R=1 -DHAVE_READLINE=1 -I. -I. -I
/export/home/drkirkby/sage-4.3.1.alpha1/local/include -DSQLITE_THREADSAFE=1
-Wall -g -m64 -m64 -g -O2 -MT sqlite3.lo -MD -MP -MF ".deps/sqlite3.Tpo"
-c -o sqlite3.lo sqlite3.c; \
then mv -f ".deps/sqlite3.Tpo" ".deps/sqlite3.Plo"; else rm -f
".deps/sqlite3.Tpo"; exit 1; fi
mkdir .libs
gcc "-DPACKAGE_NAME=\"sqlite\"" "-DPACKAGE_TARNAME=\"sqlite\""
"-DPACKAGE_VERSION=\"3.6.19\"" "-DPACKAGE_STRING=\"sqlite 3.6.19\""
"-DPACKAGE_BUGREPORT=\"http://www.sqlite.org\""; "-DPACKAGE=\"sqlite\""
"-DVERSION=\"3.6.19\"" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1
-DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1
-DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1
-DHAVE_DLFCN_H=1 -DHAVE_FDATASYNC=1 -DHAVE_USLEEP=1 -DHAVE_LOCALTIME_R=1
-DHAVE_GMTIME_R=1 -DHAVE_READLINE=1 -I. -I. -I
/export/home/drkirkby/sage-4.3.1.alpha1/local/include -DSQLITE_THREADSAFE=1
-Wall -g -m64 -m64 -g -O2 -MT sqlite3.lo -MD -MP -MF .deps/sqlite3.Tpo -c
sqlite3.c -fPIC -DPIC -o .libs/sqlite3.o
gcc: 3.6.19": No such file or directory
make[2]: *** [sqlite3.lo] Error 1
make[2]: Leaving directory
`/export/home/drkirkby/sage-4.3.1.alpha1/spkg/build/sqlite-3.6.19.p0/src'
Error making sqlite
Try replacing the "$@" in your script with ${1+"$@"}. That should ensure
"-DPACKAGE_STRING=\"sqlite 3.6.19\"" appears as a single argument to
gcc.real.
(The two -m64's are a result of it being added elsewhere too, but generally
I've not found a wrapper suitable.)
Dave
