unix package does not check properly for sem_close
On modern Linux systems (in my case, Fedora 13 and 14), the sem_close and other functions are in the rt and pthread libraries. This combination is not checked for properly by the unix package's autoconf script. As a result attempting to build the unix package will succeed, but linking applications against the misconfigured unix will result in undefined symbol errors for e.g. sem_close.
I believe that the C compiler needs to be invoked with -pthread for the right thing to happen, as unix.buildinfo contains a reference to rt that is nevertheless not enough:
buildable: True
cc-options:
ld-options:
extra-libraries: rt util dl Here's my current workaround hack:
--- old-unix/configure.ac 2010-11-23 15:25:33.741849630 -0800
+++ new-unix/configure.ac 2010-11-23 15:25:33.760849987 -0800
@@ -215,6 +215,9 @@
PTHREAD_CFLAGS=-pthread
PTHREAD_LDFLAGS=-pthread
;;
+linux*)
+ PTHREAD_LIBS=pthread
+ ;;
esac
AC_SUBST(PTHREAD_CFLAGS)
AC_SUBST(PTHREAD_LDFLAGS)Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.0.1 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | libraries/unix |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |