http://sourceware.org/bugzilla/show_bug.cgi?id=14885
Bug #: 14885
Summary: Options
--warn-unresolved-symbols/--unresolved-symbols=ignore-
all do not affect hidden/internal/protected symbols
Product: binutils
Version: 2.24 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: ld
AssignedTo: unassig...@sourceware.org
ReportedBy: d.g.gorbac...@gmail.com
Classification: Unclassified
$ cat > 1.c
extern void foo(void) __attribute__((visibility("hidden")));
extern void bar(void);
int main(void)
{
foo();
bar();
return 0;
}
^D
$ gcc -flto -Wl,--warn-unresolved-symbols 1.c
/tmp/cc6wTQ0k.ltrans0.ltrans.o: In function `main':
cc6wTQ0k.ltrans0.o:(.text+0x7): undefined reference to `foo'
cc6wTQ0k.ltrans0.o:(.text+0xc): warning: undefined reference to `bar'
collect2: error: ld returned 1 exit status
$ gcc -Wl,--warn-unresolved-symbols 1.c
/tmp/cccRrmca.o: In function `main':
1.c:(.text+0x7): undefined reference to `foo'
1.c:(.text+0xc): warning: undefined reference to `bar'
/usr/local/bin/ld: a.out: hidden symbol `foo' isn't defined
/usr/local/bin/ld: final link failed: Bad value
collect2: error: ld returned 1 exit status
Gold seemed to work:
$ gcc -flto -Wl,--warn-unresolved-symbols 1.c
/tmp/ccMFuDUR.ltrans0.ltrans.o:ccMFuDUR.ltrans0.o:function main: warning:
undefined reference to 'foo'
/tmp/ccMFuDUR.ltrans0.ltrans.o:ccMFuDUR.ltrans0.o:function main: warning:
undefined reference to 'bar'
$ gcc -Wl,--warn-unresolved-symbols 1.c
/tmp/cckgy5o7.o:1.c:function main: warning: undefined reference to 'foo'
/tmp/cckgy5o7.o:1.c:function main: warning: undefined reference to 'bar'
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