http://llvm.org/bugs/show_bug.cgi?id=12479
Bug #: 12479
Summary: GCCInstallationDetector: add an option to force a
specific version of gcc
Product: clang
Version: trunk
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: P
Component: Driver
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Classification: Unclassified
Gentoo bugreport is here: https://bugs.gentoo.org/show_bug.cgi?id=406163
The new gcc detector currently in trunk works fine with our setups, though it
is designed to always pick up the highest installed gcc version
But we can have multiple gcc installed at the same time (especially for people
testing compilers), for example a stable 4.5.3, 4.6.2 which should be unmasked
soon, 4.7.0 in testing, and even live versions. And in this case the gcc
version to use is usually not the highest
In clang < 3.0, the ebuild played with the --with-cxx-* variables to work
around this (hardcoding to the currently active compiler)
This could be solved by a new "-gcc-version" option, close to the existing
"-gcc-prefix" one (tough setting this at configure step may not be as useful).
When getting to Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple,
before starting looping on directories found in LibDir + LibSuffix, the
detector could first check the version indicated by this option (if set). And
if it does not find it, go back to the existing system iterating on found
versions.
What do you think of it? If you are interested, I can make a patch adding such
a feature. This would mosty impact lib/Driver/ToolChains.{cpp,h} and Options.td
(plus autoconf/cmake files if there is a new configure option)
--
Configure bugmail: http://llvm.org/bugs/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
_______________________________________________
LLVMbugs mailing list
[email protected]
http://lists.cs.uiuc.edu/mailman/listinfo/llvmbugs
