Gentoo Archives: gentoo-dev

From: Mike Frysinger <vapier@g.o>
To: gentoo-dev@l.g.o
Subject: [gentoo-dev] new helper: econf_build
Date: Thu, 13 Oct 2011 23:48:58
1 i've found myself a few times having to implement logic like so:
2 CFLAGS=${BUILD_CFLAGS:--O1 -pipe} \
6 CC=$(tc-getBUILD_CC) \
7 LD=$(tc-getBUILD_LD) \
8 econf --host=${CBUILD} "$@"
10 this is to deal with packages that build up not insignificant (let's call them
11 "nificant") binaries which are then used at build time. when cross-compiling,
12 you can't execute those binaries, and things fail.
14 python is a good example. it builds up the local python interpreter (which is
15 all written in C/etc...), and then uses that to parse local python scripts
16 which take care of building everything else. so a while ago we added code so
17 that it'd build two python binaries when cross-compiling: a local ${CBUILD}
18 version which is then used to parse the python build files to compile for
19 ${CHOST}. using host python won't work if it's newer/older/insane/afk.
21 ncurses compiles its local term database by first creating a tic helper and
22 then parsing its local files. we can't use the build system's tic because if
23 the installed ncurses is a different version, we run into fun things like
24 crashes/infinite loops/etc...
26 the latest thing i hit was elfutils where it creates a local binary to
27 generate a database of headers which it then compiles into the target code.
29 so rather than continuing to copy & paste this logic everywhere, i'm going to
30 add it to toolchain-funcs.eclass as "econf_build". any feedback before i do ?
31 -mike


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Subject Author
Re: [gentoo-dev] new helper: econf_build Alec Warner <antarus@g.o>
Re: [gentoo-dev] new helper: econf_build Michael Haubenwallner <haubi@g.o>