Re: [gentoo-dev] Linking Stage, building a ebuild
On 2 December 2011 03:22, Willian Vale da Rocha will@gmail.com wrote: I'm writing a ebuild for GNU Radio, just to learn how to write and i doesn't found any where(or i was looking for wrong) how to define a LDFLAGS for the linking stage. GNU Radio need this because they use their library. If i don't explain correct, i going to show the line command that i trying to explain pre ./configure --prefix=$HOME/image LDFLAGS=-L$HOME/image/lib64 \pre If i need to define prefix, how can i do it, and How can i use the LDFLAGS in ebuild Sorry about the english Additionally,m there is a GNU Radio ebuild in bugzilla. https://bugs.gentoo.org/show_bug.cgi?id=90667
[gentoo-dev] Linking Stage, building a ebuild
I'm writing a ebuild for GNU Radio, just to learn how to write and i doesn't found any where(or i was looking for wrong) how to define a LDFLAGS for the linking stage. GNU Radio need this because they use their library. If i don't explain correct, i going to show the line command that i trying to explain pre ./configure --prefix=$HOME/image LDFLAGS=-L$HOME/image/lib64 \pre If i need to define prefix, how can i do it, and How can i use the LDFLAGS in ebuild Sorry about the english
Re: [gentoo-dev] Linking Stage, building a ebuild
On Fri, 2011-12-02 at 00:22 -0300, Willian Vale da Rocha wrote: I'm writing a ebuild for GNU Radio, just to learn how to write and i doesn't found any where(or i was looking for wrong) how to define a LDFLAGS for the linking stage. GNU Radio need this because they use their library. If i don't explain correct, i going to show the line command that i trying to explain pre ./configure --prefix=$HOME/image LDFLAGS=-L$HOME/image/lib64 \pre If i need to define prefix, how can i do it, and How can i use the LDFLAGS in ebuild Sorry about the english Sorry, this is the wrong mail list for that kind of help. You want the gentoo-devhelp mail list and/or the #gentoo-dev-help IRC channel. -- Brian Dolbec dol...@gentoo.org signature.asc Description: This is a digitally signed message part
Re: [gentoo-dev] Linking Stage, building a ebuild
On Fri, Dec 02, 2011 at 12:22:30AM -0300, Willian Vale da Rocha wrote:
I'm writing a ebuild for GNU Radio, just to learn how to write and i
doesn't found any where(or i was looking for wrong) how to define a LDFLAGS
for the linking stage. GNU Radio need this because they use their library.
If i don't explain correct, i going to show the line command that i trying
to explain
pre
./configure --prefix=$HOME/image LDFLAGS=-L$HOME/image/lib64
\pre
If i need to define prefix, how can i do it, and How can i use the LDFLAGS
in ebuild
Sorry about the english
Just so you know, such questions generally belong on the
gentoo-devhelp mailing list or in
irc://chat.freenode.net/gentoo-dev-help.
In an attempt to answer your question, you should use the flag-o-matic
eclass to append directives to LDFLAGS. For example:
inherit flag-o-matic multilib
src_configure() {
append-ldflags -L${EPREFIX}/usr/$(get_libdir)/special_package \
-Wl,-rpath,${EPREFIX}/usr/$(get_libdir)/special_package
econf
}
But you appear to be trying to link to something outside of a normal
Gentoo install. If a user wanted to link a program against his own
compiled copy of the library, he would instead just invoke emerge with
the proper LDFLAGS:
# LDFLAGS=-L${HOME}/image/lib64\ -Wl,-rpath,${HOME}/images/lib64 emerge -v
my_package
If you are writing your ebuild to compile against a package/library
which is not available in portage, your first step should be to write
an ebuild for _that_ package. I.e., write the ebuild for the library
your program needs before writing the ebuild for the program. Then the
library would be properly installed into /usr/$(get_libdir) and appear
in GCC's normal searchpaths.
If this does not help, please ask again in #gentoo-dev-help or the
gentoo-devhelp ML :-).
--
binki
Look out for missing or extraneous apostrophes!
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