forked from lix-project/lix
8b7f8b56f1
This patch adds the configuration file variable "build-cores" and the command line argument "--cores". These settings specify the number of CPU cores to utilize for parallel building within a job, i.e. by passing an appropriate "-j" flag to GNU Make. The default value is 1, which means that parallel building is *disabled*. If the number of build cores is specified as 0 (synonymously: "guess" or "auto"), then the actual value is supposed to be auto-detected by builders at run-time, i.e by calling the nproc(1) utility from coreutils. The environment variable $NIX_BUILD_CORES is available to builders, but the contents of that variable does *not* influence the hash that goes into the $out store path, i.e. the number of build cores to be utilized can be changed at will without requiring any re-builds.
118 lines
3.3 KiB
C++
118 lines
3.3 KiB
C++
#ifndef __GLOBALS_H
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#define __GLOBALS_H
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#include "types.hh"
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namespace nix {
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/* Path names. */
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/* nixStore is the directory where we generally store atomic and
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derived files. */
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extern string nixStore;
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extern string nixDataDir; /* !!! fix */
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/* nixLogDir is the directory where we log various operations. */
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extern string nixLogDir;
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/* nixStateDir is the directory where state is stored. */
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extern string nixStateDir;
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/* nixDBPath is the path name of our Berkeley DB environment. */
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extern string nixDBPath;
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/* nixConfDir is the directory where configuration files are
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stored. */
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extern string nixConfDir;
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/* nixLibexecDir is the directory where internal helper programs are
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stored. */
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extern string nixLibexecDir;
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/* nixBinDir is the directory where the main programs are stored. */
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extern string nixBinDir;
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/* Misc. global flags. */
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/* Whether to keep temporary directories of failed builds. */
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extern bool keepFailed;
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/* Whether to keep building subgoals when a sibling (another subgoal
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of the same goal) fails. */
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extern bool keepGoing;
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/* Whether, if we cannot realise the known closure corresponding to a
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derivation, we should try to normalise the derivation instead. */
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extern bool tryFallback;
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/* Verbosity level for build output. */
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extern Verbosity buildVerbosity;
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/* Maximum number of parallel build jobs. 0 means unlimited. */
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extern unsigned int maxBuildJobs;
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/* Number of CPU cores to utilize in parallel within a build, i.e. by passing
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this number to Make via '-j'. 0 means that the number of actual CPU cores on
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the local host ought to be auto-detected. */
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extern unsigned int buildCores;
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/* Read-only mode. Don't copy stuff to the store, don't change the
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database. */
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extern bool readOnlyMode;
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/* The canonical system name, as returned by config.guess. */
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extern string thisSystem;
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/* The maximum time in seconds that a builer can go without producing
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any output on stdout/stderr before it is killed. 0 means
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infinity. */
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extern time_t maxSilentTime;
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/* The substituters. There are programs that can somehow realise a
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store path without building, e.g., by downloading it or copying it
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from a CD. */
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extern Paths substituters;
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/* Whether to use build hooks (for distributed builds). Sometimes
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users want to disable this from the command-line. */
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extern bool useBuildHook;
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/* Whether buildDerivations() should print out lines on stderr in a
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fixed format to allow its progress to be monitored. Each line
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starts with a "@". The following are defined:
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@ build-started <drvpath> <outpath> <system> <logfile>
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@ build-failed <drvpath> <outpath> <exitcode> <error text>
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@ build-succeeded <drvpath> <outpath>
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@ substituter-started <outpath> <substituter>
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@ substituter-failed <outpath> <exitcode> <error text>
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@ substituter-succeeded <outpath>
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Best combined with --no-build-output, otherwise stderr might
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conceivably contain lines in this format printed by the builders.
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*/
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extern bool printBuildTrace;
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Strings querySetting(const string & name, const Strings & def);
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string querySetting(const string & name, const string & def);
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bool queryBoolSetting(const string & name, bool def);
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unsigned int queryIntSetting(const string & name, unsigned int def);
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void overrideSetting(const string & name, const Strings & value);
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void reloadSettings();
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}
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#endif /* !__GLOBALS_H */
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