Re: [libvirt] [PATCH] Automagically check if libssh2 is new enough for Phyp-support to be build

On Tue, Sep 08, 2009 at 12:24:08PM +0200, Maximilian Wilhelm wrote: > Anno domini 2009 Maximilian Wilhelm scripsit: > > Hi! > >> My buildbot spotted a problem with the latest changes to Phyp, as the >> function libssh2_session_block_directions() only is available with >> libssh2 version 1.0 and later. >> At least on Debian Lenny there is an older one which prevents libVirt >> from building, so I updated the configure.in script to add another >> piece of magic (and thereby fixed the indenation of the Phypchecks). >> See attached patch. > Nobody interested? Yeah, I wanted to look at it but got sidetracked ... Small problem, with the patch it fails for me even with libssh2-devel-1.0-2.fc11 from config.log: configure:44489: checking for libssh2_session_startup in -lssh2 configure:44524: gcc -o conftest -g -O2 conftest.c -lssh2 -lpthread > &5 configure:44531: $? = 0 configure:44552: result: yes configure:44572: checking for libssh2.h configure:44594: gcc -c -g -O2 conftest.c >&5 configure:44601: $? = 0 configure:44618: result: yes configure:44666: gcc -o conftest -g -O2 conftest.c -lpthread >&5 /tmp/ccAcKiEO.o: In function `main': /u/veillard/libvirt/conftest.c:214: undefined reference to `libssh2_session_block_directions' collect2: ld returned 1 exit status the problem is taht -lssh2 is not passed to the linker so I guess this would always fail :-) Somehow the AC_TRY_LINK should get the flags but it doesn't ... + if test "$with_phyp" != "no"; then + AC_TRY_LINK([#include <libssh2.h>], [ + (void) libssh2_session_block_directions(NULL); + ], [ + AC_DEFINE_UNQUOTED([WITH_PHYP], 1, [whether IBM HMC / IVM driver is enabled]) + ], [ I you know how to fix this :-)