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See crosstool-NG for lots more information.
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I am confused. Speaking as a crosstool / cross-gdb end-user, what does this mean wanting to deploy code to and consequently debug code on target? On Sun, Mar 3, 2013 at 8:58 AM, Yann E. MORIN <yann.morin.1998@free.fr> wrote: > Trevor, All, > > On Sunday 03 March 2013 Trevor Woerner wrote: >> On Sun, Mar 3, 2013 at 9:02 AM, Yann E. MORIN <yann.morin.1998@free.fr> wrote: >> > This is wrong: >> > - 'do_expat' is used to detect whether the expat lib shall be downloaded >> > and extracted; >> > - 'do_expat' is then mis-used: >> > - it is never used to build expat for the host, but is used to decide >> > whether to enable/disable expat in the cross-gdb >> > - it is used to decide whether to build expat for the target, but is >> > always set when the native-gdb is selected, so the check is pointless. >> >> So if I understand you correctly, the only thing the build needs to >> determine is if expat needs to be included in the sysroot? > > Sorta. Crosstool-NG only builds a static version of libexpat, and never > installs it in the sysroot (ditto ncurses). > > So, we only need to know whether we need to build expat (ncurses) for the > target, and point gdb's configure to the place we installed it. > > The reason for not installing expat/ncurses in the sysroot is that the > libs are not part of the toolchain. They are only used for internal > components, and should not be exposed in the sysroot, in case the user > wants another version, or different compile flags, or a patched version. > > This is purely internal to crosstool-NG. > >> > What should be done is: >> > - rename 'do_expat' to 'need_expat' (ditto for 'do_ncurses') >> > - use 'need_expat' only to decide whether to download/extract libexpat >> > - cross-gdb: always enable expat support >> > - native-gdb: ditto >> >> In other words, if the build doesn't interfere with gdb's ./configure, >> gdb's ./configure will naturally look for and link in the host's >> expat? > > Almost, as we still need to tell the native-gdb's ./configure where to > find our internally built target expat/ncurses. > > But for the cross-gdb, it should automatically find the host's libs, > indeed, so you still need to install the devel packages on your host. > > Regards, > Yann E. MORIN. > > -- > .-----------------.--------------------.------------------.--------------------. > | Yann E. MORIN | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: | > | +33 662 376 056 | Software Designer | \ / CAMPAIGN | ___ | > | +33 223 225 172 `------------.-------: X AGAINST | \e/ There is no | > | http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL | v conspiracy. | > '------------------------------^-------^------------------^--------------------' > > -- > For unsubscribe information see http://sourceware.org/lists.html#faq > -- For unsubscribe information see http://sourceware.org/lists.html#faq
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