On Wed, Jan 23, 2019 at 09:14:30PM +0000, Richard W.M. Jones wrote: > On Thu, Jan 24, 2019 at 12:03:21AM +0300, Dmitry V. Levin wrote: > > Hi, > > > > On Wed, Jan 23, 2019 at 08:45:06PM +0000, Richard W.M. Jones wrote: > > > On Wed, Jan 23, 2019 at 09:01:19PM +0100, Bruno Haible wrote: > > [...] > > > I checked the history of the Fedora package which adds these flags, and > > > it seems like --as-needed was added for: > > > > > > https://fedoraproject.org/wiki/Changes/RemoveExcessiveLinking > > > > > > Removing -Wl,--as-needed fixes the problem. However I'm still unclear > > > about this. Is Fedora wrong? Is hivex using gnulib wrongly? Is > > > gnulib wrong? > > > > We also build everything with --as-needed by default, but > > gnulib does the right thing nowadays by using > > -Wl,--push-state -Wl,--no-as-needed -lpthread -Wl,--pop-state > > instead of plain -lpthread. > > hivex is using a very recent gnulib (34290cb926). > > The test is linked with: > > /bin/sh ../../libtool --tag=CC --preserve-dup-deps --mode=link gcc -O2 > -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 > -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong > -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 > -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic > -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection > -Wl,-z,relro -Wl,--as-needed -Wl,-z,now > -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -o test-thread_create > test-thread_create.o libtests.a ../../gnulib/lib/libgnu.la libtests.a > -pthread -Wl,--push-state -Wl,--no-as-needed -lpthread -Wl,--pop-state > > As you can see from the last bit, the --push-state ... --pop-state > seems correct. Yet the test still fails.
I see libtool is involved, and libtool is known to reorder arguments in a very unhelpful way. Could you show the actual link command invoked by libtool, please? I expect to see something like -Wl,--push-state -Wl,--no-as-needed -Wl,--pop-state ... -lpthread which doesn't make sense. -- ldv
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