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Amend r263891, by making clang default to DWARF2 debug info format for

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all FreeBSD versions, not just 10.x and earlier.  Apparently too many
people seem to have trouble with post-1993 formats.

Also remove the related notes about messing with kernel configuration
files from UPDATING, which are now superfluous.

Requested by:	many
MFC after:	3 days
This commit is contained in:
Dimitry Andric 2014-04-11 16:51:35 +00:00
parent f355a4ddf7
commit 1ff3b1375f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=264345
2 changed files with 2 additions and 21 deletions
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18
UPDATING
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@ -45,13 +45,6 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 11.x IS SLOW:
preserve the previous behaviour. E.g:
ttyu0 "/usr/libexec/getty 3wire" vt100 on secure
20140325:
It is no longer necessary to include the dwarf version in your DEBUG
options in your kernel config file. The bug that required it to be
placed in the config file has bene fixed. DEBUG should now just
contain -g. The build system will automatically update things
to do the right thing. Ignore the entry from 20140216.
20140306:
Support for libwrap (TCP wrappers) in rpcbind was disabled by default
to improve performance. To re-enable it, if needed, run rpcbind
@ -67,17 +60,6 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 11.x IS SLOW:
20140216:
Clang and llvm have been upgraded to 3.4 release.
Please note that clang 3.4 now defaults to DWARF4 debug information
format when you specify -g. Since kgdb(1) only supports DWARF2, you
should update any customized kernel configurations which include debug
information to explicitly use -gdwarf-2, e.g:
makeoptions DEBUG=-gdwarf-2
This has already been applied to the appropriate GENERIC configuration
files, so if you inherit from those, no changes are required.
Please note: this bug has been fixed, please see 20140325.
20140216:
The nve(4) driver has been removed. Please use the nfe(4) driver
for NVIDIA nForce MCP Ethernet adapters instead.

5
contrib/llvm/tools/clang/lib/Driver/Tools.cpp
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@ -2635,10 +2635,9 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
CmdArgs.push_back("-gdwarf-4");
else if (!A->getOption().matches(options::OPT_g0) &&
!A->getOption().matches(options::OPT_ggdb0)) {
// Default is dwarf-2 for darwin and FreeBSD <= 10.
// Default is dwarf-2 for darwin and FreeBSD.
const llvm::Triple &Triple = getToolChain().getTriple();
if (Triple.isOSDarwin() || (Triple.getOS() == llvm::Triple::FreeBSD &&
Triple.getOSMajorVersion() <= 10))
if (Triple.isOSDarwin() || Triple.getOS() == llvm::Triple::FreeBSD)
CmdArgs.push_back("-gdwarf-2");
else
CmdArgs.push_back("-g");