[haiku-bugs] Re: [Haiku] #7203: gcc4 seems to have an issue locating libraries
- From: "bonefish" <trac@xxxxxxxxxxxx>
- Date: Mon, 28 Feb 2011 10:32:45 -0000
#7203: gcc4 seems to have an issue locating libraries
----------------------------+----------------------------
Reporter: scottmc | Owner: zooey
Type: bug | Status: new
Priority: high | Milestone: R1/alpha3
Component: Build System | Version: R1/Development
Resolution: | Keywords: gcc4
Blocked By: | Blocking:
Has a Patch: 0 | Platform: x86
----------------------------+----------------------------
Comment (by bonefish):
I would strongly advise against mixing gcc 2 and gcc 4 executables and
libraries even if the runtime loader still supports that. With the
introduction of support for weak symbols and symbol preemption gcc 4
shared objects, unlike gcc 2 ones, are no longer linked symbolically. As a
result, with such mixing, symbol resolution will be inconsistent. This
doesn't necessarily need to lead to problems -- it will probably work just
fine in most cases -- but that's virtually impossible to predict. Hence
I'd recommend to treat gcc 2 and gcc 4 as separate architectures and build
complete library sets for each.
Regarding building packages for the hybrid-other compiler, I'm not sure
whether the compiler/linker does search the gcc* subdirectories as
expected. IIRC I introduced some symlink trickery that should make those
directories visible to the compiler, but I don't recall whether there are
built-in paths that would be searched first, thus potentially finding the
wrong libraries first. The safest way to build gcc 4 libraries is on a
gcc4[h] haiku.
--
Ticket URL: <http://dev.haiku-os.org/ticket/7203#comment:7>
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