Nick~ Thanks for the reply. Of all the sources of information possible, I didn't think of looking through the ebuild for how the flags are implemented!! I did notice that portage allows you to view the ebuild (so looking through the build script before emerging is possible). Great tip!
John D -----Original Message----- From: Nick Rout [mailto:[EMAIL PROTECTED] Sent: Sunday, August 28, 2005 4:28 AM To: gentoo-user@lists.gentoo.org Subject: RE: [gentoo-user] [OT] Open Office USE flags If you really want to know what a USE flag does on a particular ebuild you have to: 1, read the ebuild and find what the USE flag switches on or off. 2, understand, from your knowledge of the package, what switching that option on or off does. for example, in openoffice: [EMAIL PROTECTED] ~/mediatemp $ grep hardened /usr/portage/app-office/openoffice/openoffice-1.1.4-r1.ebuild IUSE="curl hardened java kde nptl zlib" #GCC 3.4 fixes, also needed for hardened #Fixes for hardened if use hardened; then epatch ${FILESDIR}/${PV}/hardened-link.patch this shows that the effect (and the only effect) of using the hardened flag is to patch the source with the file ${FILESDIR}/${PV}/hardened-link.patch Translating, ${FILESDIR} is the files directory under /usr/portage/app-office/openoffice ${PV} is "package version", ie in the case of openoffice-1.1.4 is 1.1.4 so the file is: [EMAIL PROTECTED] ~/mediatemp $ cat /usr/portage/app-office/openoffice/files/1.1.4/hardened-link.patch diff -ur solenv.orig/inc/unxlngi4.mk solenv/inc/unxlngi4.mk --- solenv.orig/inc/unxlngi4.mk 2004-10-23 20:09:29.344518376 +0200 +++ solenv/inc/unxlngi4.mk 2004-10-23 20:09:43.084429592 +0200 @@ -156,8 +156,8 @@ LINKFLAGS=-Wl,-z,combreloc $(LINKFLAGSDEFS) $(LINKFLAGSRUNPATH) # linker flags for linking applications -LINKFLAGSAPPGUI= -Wl,-export-dynamic -LINKFLAGSAPPCUI= -Wl,-export-dynamic +LINKFLAGSAPPGUI= -Wl,-export-dynamic -Wl,-z,execheap +LINKFLAGSAPPCUI= -Wl,-export-dynamic -Wl,-z,execheap # linker flags for linking shared libraries LINKFLAGSSHLGUI= -shared you'll have to work out for yourself what this actually does. the Changelog file might have a clue, or bugs.gentoo.org On Sun, 2005-08-28 at 02:42 -0400, John Dangler wrote: > Wilie~ > Thanks for the reply. I did leave it out. I kept reading and couldn't find > anywhere except portage (and the hardened docs) where it would be necessary > for anything in 'daily life'. And, the references I did find for it were > all linked to PIE. The USE flags I quoted were from portage. Looking at > the package and selecting USE flags. I've taken to looking at all of the > information about a package before emerging -- it saves a lot of backstrokes > in the long run, and I keep notes about which flags I've added to make.conf > for which packages, along with the defaults that are already there... > > John D > > -- Nick Rout <[EMAIL PROTECTED]> -- gentoo-user@gentoo.org mailing list -- gentoo-user@gentoo.org mailing list
