maurice/snix
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

On Linux, pretend we're building on Linux 2.6

Browse source 
Setting the UNAME26 personality causes "uname" to return "2.6.x",
regardless of the kernel version.  This improves determinism in
a few misbehaved packages.
This commit is contained in:
Eelco Dolstra 2012-04-05 13:03:19 +02:00
parent 3b859ead37
commit f2467eb6a0
1 changed files with 11 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

11
src/libstore/build.cc
View file

@ -1794,10 +1794,21 @@ void DerivationGoal::startBuilder()
throw SysError(format("changing into `%1%'") % tmpDir);
#ifdef CAN_DO_LINUX32_BUILDS
/* Change the personality to 32-bit if we're doing an
i686-linux build on an x86_64-linux machine. */
if (drv.platform == "i686-linux" && thisSystem == "x86_64-linux") {
if (personality(0x0008 | 0x8000000 /* == PER_LINUX32_3GB */) == -1)
throw SysError("cannot set i686-linux personality");
}
/* Impersonate a Linux 2.6 machine to get some determinism
in builds that depend on the kernel version. */
if ((drv.platform == "i686-linux" || drv.platform == "x86_64-linux") &&
queryBoolSetting("build-impersonate-linux-26", true))
{
int cur = personality(0xffffffff);
if (cur != -1) personality(cur | 0x0020000 /* == UNAME26 */);
}
#endif
/* Fill in the environment. */