I'm doing the same in one of my projects where I link against a prebuilt gcc lib. Adding support for that is quite easy actually:
https://github.com/efidroid/edk2/commit/841473c1c86823521dfad5eb3d74461557302e42 On Thu, Apr 6, 2017 at 8:57 PM, Andrew Fish <[email protected]> wrote: > >> On Apr 6, 2017, at 11:07 AM, Peter Hornyack <[email protected]> wrote: >> >> I'd like to make an adjustment to the edk2 build (locally, not for >> upstream) and I'm hoping someone can offer some guidance. >> >> My goal is to pre-build an edk2 library in a separate build process, >> then pull that library into the full build later on. Specifically I'm >> building my firmware image using OvmfPkgX64.dsc, but I want to build >> OpensslLib (CryptoPkg/Library/OpensslLib/OpensslLib.inf) in advance, >> then pull the resulting lib into the full build later. How can I >> achieve this? >> >> In my build output I can see that when OpensslLib.inf is built, all of >> the openssl .c files are compiled into .obj files, then an ar command >> wraps those up into OpensslLib.lib. I want to pull those steps out and >> pre-build OpensslLib.lib, but I've been unable to find where/how the >> edk2 build grabs that .lib file and turns it into the final firmware >> image. I've reviewed the edk2 build documentation but still can't >> figure this out. Can anyone point me to the right place in the edk2 >> build files where I can make this happen? Or perhaps is there an >> example of this already in the edk2 build that I can imitate? >> > > Peter, > > https://github.com/tianocore/edk2/blob/master/BaseTools/Conf/build_rule.template > > <https://github.com/tianocore/edk2/blob/master/BaseTools/Conf/build_rule.template> > gets copied to Cont/build_rule.txt and these are the rules use to build the > makefiles. > > In your INF file you can add a [BuildOptions] section and use that to modify > the compiler, linker flags, etc for your module. > > This is the horrific example of what is possible: > https://github.com/tianocore/edk2/blob/master/EmulatorPkg/Unix/Host/Host.inf#L118 > > <https://github.com/tianocore/edk2/blob/master/EmulatorPkg/Unix/Host/Host.inf#L118> > > You can prune by compiler type, architecture, and which FLAG you want to use. > I seem to remember = is append and == is replace. > > Thanks, > > Andrew Fish > >> Thanks, >> Peter >> _______________________________________________ >> edk2-devel mailing list >> [email protected] >> https://lists.01.org/mailman/listinfo/edk2-devel > > _______________________________________________ > edk2-devel mailing list > [email protected] > https://lists.01.org/mailman/listinfo/edk2-devel _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
