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| author | Rickard Green <[email protected]> | 2013-07-10 15:05:43 +0200 |
|---|---|---|
| committer | Rickard Green <[email protected]> | 2013-07-10 15:05:43 +0200 |
| commit | 75f57c5f9a3bd03cb16e1663d40ea98bbb3ed487 (patch) | |
| tree | 9cb54d13edf3e1ee7794579c7be02893af52b3c6 /HOWTO/INSTALL.md | |
| parent | 903f7be44820731dd0f9989024c72ead07e90e81 (diff) | |
| parent | b5df977d74dfce0b1bb41ebcedb7f16d02477c5a (diff) | |
| download | otp-75f57c5f9a3bd03cb16e1663d40ea98bbb3ed487.tar.gz otp-75f57c5f9a3bd03cb16e1663d40ea98bbb3ed487.tar.bz2 otp-75f57c5f9a3bd03cb16e1663d40ea98bbb3ed487.zip | |
Merge branch 'rickard/info/OTP-11196' into maint
* rickard/info/OTP-11196:
Add test cases for native atomics and jump table
Refuse to build SMP runtime by default without native atomics
Make information about use of jump table available via system_info BIF
Make ethread library information available via system_info BIF
Make emulator arguments available via the system_info BIF
Diffstat (limited to 'HOWTO/INSTALL.md')
| -rw-r--r-- | HOWTO/INSTALL.md | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/HOWTO/INSTALL.md b/HOWTO/INSTALL.md index 8051bc4393..fa1b9d2e89 100644 --- a/HOWTO/INSTALL.md +++ b/HOWTO/INSTALL.md @@ -288,6 +288,14 @@ Some of the available `configure` options are: implementation available, you typically want to try using the `libatomic_ops` library. It can be downloaded from <http://www.hpl.hp.com/research/linux/atomic_ops/>. +* `--disable-smp-require-native-atomics` - By default `configure` will + fail if an SMP runtime system is about to be built, and no implementation + for native atomic memory accesses can be found. If this happens, you are + encouraged to find a native atomic implementation that can be used, e.g., + using `libatomic_ops`, but by passing `--disable-smp-require-native-atomics` + you can build using a fallback implementation based on mutexes or spinlocks. + Performance of the SMP runtime system will however suffer immensely without + an implementation for native atomic memory accesses. If you or your system has special requirements please read the `Makefile` for additional configuration information. |