aboutsummaryrefslogtreecommitdiffstats
path: root/HOWTO/INSTALL.md
AgeCommit message (Collapse)Author
2015-01-14Improve ethread atomics based on GCC builtinsRickard Green
* Use of __atomic builtins when available. * Improved configure test that checks for missing memory barrier in __sync_synchronize(). The old approach was to verify known working gcc versions and check gcc version at compile time. Besides not being very safe, the old approach often unnecessarily caused usage of the very expensive workaround. * Introduced (no overhead) workaround for missing clobber in __sync_synchronize() when using buggy LLVM implementation of __sync_synchronize(). * Implement native memory barriers for ARM processors supporting the DMB instruction. * Use of volatile store on Alpha as atomic set operation if no __atomic_store_n() is available (already used on x86/x86_64 Sparc V9, PowerPC, and MIPS). Fallback used when not using volatile store is typically very expensive. * Use volatile load on Alpha and ARM as atomic read operation if no __atomic_load_n() is available (already used on x86/x86_64 Sparc V9, PowerPC, and MIPS). Fallback when not using volatile load is typically very expensive.
2014-11-26Improve documentation about atomic operationsRickard Green
2014-08-04Fix some spelling misstakesLukas Larsson
2014-04-03Update instructions for cloning the wxWidgets repositoryBjörn Gustavsson
The master branch has incompatible changes by default. The safest course for now is to use the WX_3_0_branch.
2014-04-03Update/remove references to --enable-shared-zlibBjörn Gustavsson
In 9f57d8c4f86323cf7481c9a7e512486087bb5542, the configure option --enable-shared-zlib. It was replaced with --enable-builtin-zlib.
2014-04-02Correct and clean up documentationMagnus Lidén
The build and install documentation was not complete and needed some restructuring.
2014-03-12Update compile instructions when compiling from gitSage Imel
Updating to reflect the instructions found on the mailing list. http://erlang.org/pipermail/erlang-questions/2012-April/066184.html
2014-02-24Merge branch 'rickard/configure-defaults/OTP-11723'Rickard Green
* rickard/configure-defaults/OTP-11723: Always default to disabled floating point exceptions on Linux
2014-02-24Always default to disabled floating point exceptions on LinuxRickard Green
This since there exist unresolved stability issues in the implementation for Linux.
2014-02-23Introduce configure option --with-assumed-cache-line-size=SIZERickard Green
2014-02-19Build documentation with bootstrap systemRickard Green
Enables build of documentation in source trees that has been cross built
2014-02-19Misc adjustments of OTP versionRickard Green
2014-01-29Minor update of INSTALL.mdRickard Green
2014-01-28Merge branch 'vinoski/ds'Rickard Green
* vinoski/ds: initial support for dirty schedulers and dirty NIFs
2014-01-28initial support for dirty schedulers and dirty NIFsSteve Vinoski
Add initial support for dirty schedulers. There are two types of dirty schedulers: CPU schedulers and I/O schedulers. By default, there are as many dirty CPU schedulers as there are normal schedulers and as many dirty CPU schedulers online as normal schedulers online. There are 10 dirty I/O schedulers (similar to the choice of 10 as the default for async threads). By default, dirty schedulers are disabled and conditionally compiled out. To enable them, you must pass --enable-dirty-schedulers to the top-level configure script when building Erlang/OTP. Current dirty scheduler support requires the emulator to be built with SMP support. This restriction will be lifted in the future. You can specify the number of dirty schedulers with the command-line options +SDcpu (for dirty CPU schedulers) and +SDio (for dirty I/O schedulers). The +SDcpu option is similar to the +S option in that it takes two numbers separated by a colon: C1:C2, where C1 specifies the number of dirty schedulers available and C2 specifies the number of dirty schedulers online. The +SDPcpu option allows numbers of dirty CPU schedulers available and dirty CPU schedulers online to be specified as percentages, similar to the existing +SP option for normal schedulers. The number of dirty CPU schedulers created and dirty CPU schedulers online may not exceed the number of normal schedulers created and normal schedulers online, respectively. The +SDio option takes only a single number specifying the number of dirty I/O schedulers available and online. There is no support yet for programmatically changing at run time the number of dirty CPU schedulers online via erlang:system_flag/2. Also, changing the number of normal schedulers online via erlang:system_flag(schedulers_online, NewSchedulersOnline) should ensure that there are no more dirty CPU schedulers than normal schedulers, but this is not yet implemented. You can retrieve the number of dirty schedulers by passing dirty_cpu_schedulers, dirty_cpu_schedulers_online, or dirty_io_schedulers to erlang:system_info/1. Currently only NIFs are able to access dirty scheduler functionality. Neither drivers nor BIFs currently support dirty schedulers. This restriction will be addressed in the future. If dirty scheduler support is present in the runtime, the initial status line Erlang prints before presenting its interactive prompt will include the indicator "[ds:C1:C2:I]" where "ds" indicates "dirty schedulers", "C1" indicates the number of dirty CPU schedulers available, "C2" indicates the number of dirty CPU schedulers online, and "I" indicates the number of dirty I/O schedulers. Document The dirty NIF API in the erl_nif man page. The API closely follows Rickard Green's presentation slides from his talk "Future Extensions to the Native Interface", presented at the 2011 Erlang Factory held in the San Francisco Bay Area. Rickard's slides are available online at http://bit.ly/1m34UHB . Document the new erl command-line options, the additions to erlang:system_info/1, and also add the erlang:system_flag/2 dirty scheduler documentation even though it's not yet implemented. To determine whether the dirty NIF API is available, native code can check to see whether the C preprocessor macro ERL_NIF_DIRTY_SCHEDULER_SUPPORT is defined. To check if dirty schedulers are available at run time, native code can call the boolean enif_have_dirty_schedulers() function, and Erlang code can call erlang:system_info(dirty_cpu_schedulers), which raises badarg if no dirty scheduler support is available. Add a simple dirty NIF test to the emulator NIF suite.
2014-01-28Fix MacOSX build instructionsDan Gudmundsson
Remove confusing and obsolete build instructions for Lion.
2014-01-21Merge branch 'maint'Dan Gudmundsson
2014-01-15Update wx build instsructions for DarwinDan Gudmundsson
2013-10-30Merge branch 'maint'Fredrik Gustafsson
2013-10-30Update INSTALL.mdJakub
Added info how to generate configure file if building from git.
2013-09-02Merge branch 'maint'Lukas Larsson
* maint: Refactor and change EXTRA_APPLICATIONS to use ls Add configure option --without-$app Conflicts: HOWTO/INSTALL.md lib/Makefile
2013-09-02Add configure option --without-$appLukas Larsson
This is used to skip the specified app when building and releasing
2013-08-21erts: Document --enable-static-nif/driverLukas Larsson
2013-07-09Refuse to build SMP runtime by default without native atomicsRickard Green
Build with fallback can be enabled by passing the `configure` command line argument `--disable-smp-require-native-atomics`
2013-01-25Document howto build wxWidgets on macDan Gudmundsson
2012-07-25Merge branch 'maint'Björn-Egil Dahlberg
2012-07-19Move README and INSTALL to HOWTO folderLukas Larsson