diff options
-rw-r--r-- | documentation/dev-manual/dev-manual-common-tasks.xml | 8 | ||||
-rw-r--r-- | documentation/ref-manual/ref-variables.xml | 31 |
2 files changed, 29 insertions, 10 deletions
diff --git a/documentation/dev-manual/dev-manual-common-tasks.xml b/documentation/dev-manual/dev-manual-common-tasks.xml index 1d4e34f91e..bab68a1bb9 100644 --- a/documentation/dev-manual/dev-manual-common-tasks.xml +++ b/documentation/dev-manual/dev-manual-common-tasks.xml | |||
@@ -9089,6 +9089,14 @@ | |||
9089 | you debug and fix them. | 9089 | you debug and fix them. |
9090 | This section presents a real-world example of an error encountered | 9090 | This section presents a real-world example of an error encountered |
9091 | on the Yocto Project autobuilder and the process used to fix it. | 9091 | on the Yocto Project autobuilder and the process used to fix it. |
9092 | <note> | ||
9093 | If you cannot properly fix a <filename>make</filename> race | ||
9094 | condition, you can work around it by clearing either the | ||
9095 | <ulink url='&YOCTO_DOCS_REF_URL;#var-PARALLEL_MAKE'><filename>PARALLEL_MAKE</filename></ulink> | ||
9096 | or | ||
9097 | <ulink url='&YOCTO_DOCS_REF_URL;#var-PARALLEL_MAKEINST'><filename>PARALLEL_MAKEINST</filename></ulink> | ||
9098 | variables. | ||
9099 | </note> | ||
9092 | </para> | 9100 | </para> |
9093 | 9101 | ||
9094 | <section id='the-failure'> | 9102 | <section id='the-failure'> |
diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml index 27008c7a5d..dfe775b23f 100644 --- a/documentation/ref-manual/ref-variables.xml +++ b/documentation/ref-manual/ref-variables.xml | |||
@@ -8525,13 +8525,18 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3" | |||
8525 | </para> | 8525 | </para> |
8526 | 8526 | ||
8527 | <para> | 8527 | <para> |
8528 | The OpenEmbedded build system automatically sets this | 8528 | By default, the OpenEmbedded build system automatically |
8529 | variable to be equal to the number of cores the build | 8529 | sets this variable to be equal to the number of cores the |
8530 | system uses. | 8530 | build system uses. |
8531 | <note> | 8531 | <note> |
8532 | Individual recipes might clear out this variable if | 8532 | If the software being built experiences dependency |
8533 | the software being built has problems running its | 8533 | issues during the <filename>do_compile</filename> |
8534 | <filename>make</filename> process in parallel. | 8534 | task that result in race conditions, you can clear |
8535 | the <filename>PARALLEL_MAKE</filename> variable within | ||
8536 | the recipe as a workaround. | ||
8537 | For information on addressing race conditions, see the | ||
8538 | "<ulink url='&YOCTO_DOCS_DEV_URL;#debugging-parallel-make-races'>Debugging Parallel Make Races</ulink>" | ||
8539 | section in the Yocto Project Development Manual. | ||
8535 | </note> | 8540 | </note> |
8536 | For single socket systems (i.e. one CPU), you should not | 8541 | For single socket systems (i.e. one CPU), you should not |
8537 | have to override this variable to gain optimal parallelism | 8542 | have to override this variable to gain optimal parallelism |
@@ -8539,7 +8544,7 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3" | |||
8539 | However, if you have very large systems that employ | 8544 | However, if you have very large systems that employ |
8540 | multiple physical CPUs, you might want to make sure the | 8545 | multiple physical CPUs, you might want to make sure the |
8541 | <filename>PARALLEL_MAKE</filename> variable is not | 8546 | <filename>PARALLEL_MAKE</filename> variable is not |
8542 | set higher than "20". | 8547 | set higher than "-j 20". |
8543 | </para> | 8548 | </para> |
8544 | 8549 | ||
8545 | <para> | 8550 | <para> |
@@ -8564,9 +8569,15 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3" | |||
8564 | This variable defaults to the value of | 8569 | This variable defaults to the value of |
8565 | <link linkend='var-PARALLEL_MAKE'><filename>PARALLEL_MAKE</filename></link>. | 8570 | <link linkend='var-PARALLEL_MAKE'><filename>PARALLEL_MAKE</filename></link>. |
8566 | <note> | 8571 | <note> |
8567 | Individual recipes might clear out this variable if | 8572 | If the software being built experiences dependency |
8568 | the software being built has problems running its | 8573 | issues during the |
8569 | <filename>make install</filename> process in parallel. | 8574 | <filename>do_install</filename> task that result in |
8575 | race conditions, you can clear the | ||
8576 | <filename>PARALLEL_MAKEINST</filename> variable within | ||
8577 | the recipe as a workaround. | ||
8578 | For information on addressing race conditions, see the | ||
8579 | "<ulink url='&YOCTO_DOCS_DEV_URL;#debugging-parallel-make-races'>Debugging Parallel Make Races</ulink>" | ||
8580 | section in the Yocto Project Development Manual. | ||
8570 | </note> | 8581 | </note> |
8571 | </para> | 8582 | </para> |
8572 | </glossdef> | 8583 | </glossdef> |