FTBFS: sed will break when path contains ".o"

[Whissi]

Hi,

in Gentoo we run into an interesting problem: Our genkernel tool will build thin-provisioning-tools in a special build environment. However, every 2 out of 62 times, make install failed with

base/application.d:1: *** multiple target patterns.  Stop.

Turns out that the problem is the sed call in L211 (L220 is probably affected by the same problem):

	sed 's,\([^ :]*\)\.o[ :]*,\1.o \1.gmo $* : Makefile ,g' < $*.$$$$ > $*.d; \

The problem is that we create two temporary folders, e.g.

/var/tmp/genkernel/$(mktemp -d -p "${TMPDIR}" gk.XXXXXXXX)/$(mktemp -d -p "${TEMP}" ${PN}.XXXXXXXX)/buildroot

so if the first X after a . is filled with o, that sed breaks.

I.e. when a path like /var/tmp/genkernel/gk.g14ub9N4/thin-provisioning-tools.oCZSRksk/buildroot will be used, base/application.d contains

base/application.o base/application.gmo base/application : Makefile base/application.cc base/application.h \
 /var/tmp/genkernel/gk.g14ub9N4/thin-provisioning-tools.o /var/tmp/genkernel/gk.g14ub9N4/thin-provisioning-tools.gmo base/application : Makefile CZSRksk/buildroot/usr/include/boost/shared_ptr.hpp \
 /var/tmp/genkernel/gk.g14ub9N4/thin-provisioning-tools.o /var/tmp/genkernel/gk.g14ub9N4/thin-provisioning-tools.gmo base/application : Makefile CZSRksk/buildroot/usr/include/boost/smart_ptr/shared_ptr.hpp \
 /var/tmp/genkernel/gk.g14ub9N4/thin-provisioning-tools.o /var/tmp/genkernel/gk.g14ub9N4/thin-provisioning-tools.gmo base/application : Makefile CZSRksk/buildroot/usr/include/boost/config.hpp \
[...]

and make install will fail with error above.

When everything works, file looks like

base/application.o base/application.gmo base/application : Makefile base/application.cc base/application.h \
 /var/tmp/genkernel/gk.5SdleqvS/thin-provisioning-tools.8kYv2Igj/buildroot/usr/include/boost/shared_ptr.hpp \
 /var/tmp/genkernel/gk.5SdleqvS/thin-provisioning-tools.8kYv2Igj/buildroot/usr/include/boost/smart_ptr/shared_ptr.hpp \
 /var/tmp/genkernel/gk.5SdleqvS/thin-provisioning-tools.8kYv2Igj/buildroot/usr/include/boost/config.hpp \
[...]

Thanks to @dwfreed for spotting the problem.