Date: Fri, 10 Feb 2017 16:19:13 +0000 From: "Meyer, Wolfgang" <wolfgang.meyer@hob.de> To: "Meyer, Wolfgang" <wolfgang.meyer@hob.de>, "'freebsd-arm@FreeBSD.org'" <freebsd-arm@FreeBSD.org>, "'freebsd-toolchain@FreeBSD.org'" <freebsd-toolchain@FreeBSD.org> Subject: RE: How to get a crosscompile toolchain for aarch64 for use in poudriere[?] Message-ID: <EC88118611AE564AB0B10C6A4569004D015C0639B0@HOBEX11.hob.de> In-Reply-To: <EC88118611AE564AB0B10C6A4569004D015C063770@HOBEX11.hob.de>
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> Hello, > > > To make the long story short, after comparing the verbose output of my > compiling in the jails with that of a direct crosscompile I found out that it was > able to correctly link some object files when providing absolute paths to the > crt*.o files and correct library search path for the libgcc_something libraries. > Which of course doesn't help when the linker is implicitly called by the > compiler. Further research showed that I could crosscompile/link when > providing the --sysroot=/ flag to overwrite the sysroot configuration from the > build of the crosscompiler. Amending the lines > > CFLAGS+=--sysroot=/ > CPPFLAGS+=--sysroot=/ (Don't know if needed) > CXXFLAGS+=--sysroot=/ > LDFLAGS+=--sysroot=/ > > to my poudriere make.conf file I finally was able to produce a working cross- > compiled package for aarch64 in poudriere. And the gains are quite significant > (around 21 minutes for building pkg package with qemu-user emulation vs 5 > minutes using cross-compilation, native amd64 build in poudriere finishes in > less than a minute). > > Still the creation of the cross-compiling toolchain seems to be quite > cumbersome. Hence advice on getting such a toolchain in a cleaner way > (ideally probably a working build for the xdev target) are greatly appreciated. > After building some more packages besides of pkg it seems, I am still not there yet. There is quite some fallout mainly during configure due to not getting the right searchpath for the libraries. Maybe creating a symlink on the root directory at the path of the expected sysroot directory might heal this. ________________________________ Follow HOB: - HOB: http://www.hob.de/redirect/hob.html - Xing: http://www.hob.de/redirect/xing.html - LinkedIn: http://www.hob.de/redirect/linkedin.html - HOBLink Mobile: http://www.hob.de/redirect/hoblinkmobile.html - Facebook: http://www.hob.de/redirect/facebook.html - Twitter: http://www.hob.de/redirect/twitter.html - YouTube: http://www.hob.de/redirect/youtube.html - E-Mail: http://www.hob.de/redirect/mail.html HOB GmbH & Co. KG Schwadermuehlstr. 3 D-90556 Cadolzburg Geschaeftsfuehrung: Klaus Brandstaetter, Zoran Adamovic AG Fuerth, HRA 5180 Steuer-Nr. 218/163/00107 USt-ID-Nr. DE 132747002 Komplementaerin HOB electronic Beteiligungs GmbH AG Fuerth, HRB 3416help
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