http://sourceware.org/bugzilla/show_bug.cgi?id=13201
Bug #: 13201
Summary: gcc -Wl,--as-needed -flto doesn't work with the BFD
linker, but with gold
Product: binutils
Version: 2.22 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: ld
AssignedTo: unassig...@sources.redhat.com
ReportedBy: d...@debian.org
Classification: Unclassified
$ cat test-flto.c
#include <math.h>
#include <stdio.h>
int main()
{
printf("%le\n", gamma(42));
return 0;
}
$ gcc -Wl,--as-needed -flto test-flto.c -lm
/tmp/ccXjDUDX.ltrans0.ltrans.o: In function `main':
ccXjDUDX.ltrans0.o:(.text+0xd): undefined reference to `gamma'
collect2: ld returned 1 exit status
$ gcc -B/usr/lib/gold-ld/ -Wl,--as-needed -flto -o test-flto test-flto.c -lm
does work
see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50367
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