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Update configure cache file example.

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This commit is contained in:
Jason Evans 2016-11-30 09:57:12 -08:00
parent eb29d7ec0e
commit 7179351a45
1 changed files with 6 additions and 12 deletions
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18
INSTALL
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@ -325,19 +325,13 @@ PATH="?"
'configure' uses this to find programs.
In some cases it may be necessary to work around configuration results that do
not match reality. For example, OS X 10.12 in conjunction with XCode 8 adds
the os_unfair_lock_*() API, but if XCode 8 is used to build jemalloc on older
versions of OS X, the configure script will determine that os_unfair_lock_*()
is compilable, yet run-time failures will result. To work around this
(ignoring that MACOSX_DEPLOYMENT_TARGET may be the correct fix), create a cache
file (called e.g. darwin.cache) with the following contents to override the
relevant configuration variable defined in configure.ac:
not match reality. For example, Linux 4.5 added support for the MADV_FREE flag
to madvise(2), which can cause problems if building on a host with MADV_FREE
support and deploying to a target without. To work around this, use a cache
file to override the relevant configuration variable defined in configure.ac,
e.g.:
je_cv_os_unfair_lock=no
Invoke configure as such:
./configure --cache=darwin.cache
echo "je_cv_madv_free=no" > config.cache && ./configure -C
=== Advanced compilation =======================================================