Public bug reported:
$ cat test.c EOF
#include time.h
int main() {
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, ts);
return 0;
}
EOF
$ gcc -o test -lrt test.c
test.c:(.text+0x15): undefined reference to `clock_gettime'
Adding -Wl,--no-as-needed before -lrt makes it link. Using gold instead
of BFD ld also makes it link. There is no reason why -Wl,--as-needed
-lrt (--as-needed being the ubuntu default) should drop -lrt when one of
its symbol is used, especially when dropping it makes the linkage
fail...
** Affects: binutils (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/995787
Title:
ld discards -lrt despite clock_gettime being used, and wrongfully
fails to link
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