On Tue, Nov 29, 2016 at 02:31:36PM +0100, Jiri Olsa wrote: > hi, > we noticed behaviour change in Fedora 25 gcc wrt -Wp option. > > We use following command line to generate the dependency file: > gcc -Wp,-MD,krava,-MT,krava -c -o ex.o ex.c > > and we get 'krava' file with: > krava: ex.c /usr/include/stdc-predef.h /usr/include/stdio.h \ > > But when we split -Wp option into 2 -Wp options like: > gcc -Wp,-MD,krava -Wp,MT,krava -c -o ex.o ex.c > > we get: > ex.o krava: ex.c /usr/include/stdc-predef.h /usr/include/stdio.h \ > > notice the extra 'ex.o' target. > > We see this behaviour in Fedora 25. It's ok in Fedora 24, which seems odd > because both have same gcc version 6.2.1. Please check full output below. more info on this.. it's not fedora version related, it's related to having ccache installed (kudos to Arnaldo ;-) ) with ccache installed above behaviour happens in both Fedora 24 and 25 thanks, jirka
