On Fri, 2006-06-30 at 09:30 +0200, Ralf Ertzinger wrote:
> Hi.
>
> On Fri, 30 Jun 2006 09:23:20 +0200, Hans de Goede wrote:
>
> > How about using ld --as-needed, AFAIK that has come up before and
> > would be a great improvement!
>
> In the few cases that I've tried it it simply did not work as adveritsed
> (or maybe I misunderstood it's purpose).
>
> To wit:
>
> > cat > test.c <<EOF
> #include <stdio.h>
>
> int main(int argc, char** argv) {
>
> fprintf(stdout, "This is a test\n");
>
> return 0;
> }
> EOF
>
> > gcc -o test.o -c test.c
> > gcc -o test -lxml2 -Wl,--as-needed test.o
> > ldd -r -u ./test
> Unused direct dependencies:
>
> /usr/lib/libxml2.so.2
However:
$ cat > test.c <<EOF
#include <stdio.h>
int main(int argc, char** argv) {
fprintf(stdout, "This is a test\n");
return 0;
}
EOF
$ gcc -o test.o -c test.c
$ gcc -o test -lxml2 -Wl,--as-needed test.o
$ ldd -r -u ./test
Unused direct dependencies:
/usr/lib/libxml2.so.2
$ gcc -o test -Wl,--as-needed -lxml2 test.o
$ ldd -r -u ./test
(no output)
Paul.
