From mboxrd@z Thu Jan 1 00:00:00 1970 From: jimmy.durand.wesolowski@gmail.com (Jimmy Durand Wesolowski) Date: Mon, 26 Aug 2013 09:43:49 +0200 Subject: [lttng-dev] [LTTNG][LTTng-ust] "Out of system" building patches. In-Reply-To: References: <1377160051-12449-1-git-send-email-jimmy.durand.wesolowski@gmail.com> <20130822125523.GB26852@Krystal> <20130824175909.GA12409@Krystal> Message-ID: 2013/8/24 Jimmy Durand > 2013/8/24 Mathieu Desnoyers > >> * Jimmy Durand (jimmy.durand.wesolowski at gmail.com) wrote: >> > 2013/8/22 Mathieu Desnoyers >> > >> > > * Jimmy Durand Wesolowski (jimmy.durand.wesolowski at gmail.com) wrote: >> > > > Hi, >> > > > >> > > > >> > > > Here are some patches to allow installing LTTng-ust out of the >> system >> > > > directories, ie building with "./configure --prefix", without >> having to >> > > set >> > > > C/CPP/LDFLAGS at both the configure and the make building steps. >> > > >> > > Usually, setting CPPFLAGS/CFLAGS/LDFLAGS at configure time is enough, >> > > e.g.: >> > > >> > > LDFLAGS=/usr/local/lib ./configure >> > > >> > > What feature is this patchset adding that is not covered by the usual >> > > approach ? Or what is it fixing ? >> > > >> > Actually, this is enough for a regular system build, but if you wish to >> > build >> > it in another directory with --prefix=, which is the case for >> cross- >> > compiling, this not enough. >> >> It might be a failure of my imagination but.. why is >> CPPFLAGS/CFLAGS/LDFLAGS not enough to get UST to fetch the dependencies >> it needs (e.g. userspace RCU) when they have been installed in >> non-standard paths (because e.g. userspace RCU has been configured with >> a --prefix path for sake of cross-compiling). >> > When building the doc/examples source directories, it seems that the > Makefiles are > not using the compiler and the flags set during the './configure' stage. > > Can you give a more detailed use-case that CPPFLAGS/CFLAGS/LDFLAGS fail >> to cover ? >> > Yes, I will send it a complete use case Monday morning (UTC+1). > Here is a quick test, without any of my modifications. I had to pass both CFLAGS and LDFLAGS to "./configure", as said earlier, which can be considered a normal process: CFLAGS="-I/include" \ CPPFLAGS="-I/include" \ LDFLAGS="-L/lib" \ ./configure --prefix=${PWD}/build Now, running "make all install", I would expect the build to succeed. But, in the "doc/examples" subdirectories, for example "easy-ust", I have the following error: ../../../include/lttng/tracepoint-rcu.h:26:27: fatal error: urcu/compiler.h: \ No such file or directory I have to run "make all" with the CFLAGS set to have a successful build (actually I even had to add a -I${PWD}/include to the "./configure" step, 'sample_tracepoint.o' would not build otherwise). Thank you, -- Jimmy Durand Wesolowski OpenWide R&D engineer OneAccess -------------- next part -------------- An HTML attachment was scrubbed... URL: