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Improve Makefile.[unix|win]::context's dependencies

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This pull request improves the dependencies for Makefile.unix::context rule.
* `include/math.h`, `include/float.h`, `include/stdarg.h`, `include/setjmp.h` are only added to `context`'s dependency if the Kconfig value is set. This prevents `context` from trying to make `include/math.h` only to find out there's no command to create the file.
* Instead of executing $(CONTEXTDIRS) in a for loop in the `context` rule, $(CONTEXTDIRS) are added as a dependency to `context` and a rule is created to create the targets. Real files are used, to prevent needlessly rebuilding the same `context` over and over and over again.
* Instead of making the directory `staging`, add it as an order-only dependency for `context`. this ensures the directory is only created if it doesn't exist.

Tested by running:
```
(cd tools && ./configure.sh -a ../incubator-nuttx-apps stm32f3discovery:nsh)
make context
```

First time running context:
```
➜  incubator-nuttx git:(improve-make-context) time make context
make[1]: Entering directory '/home/user/code/fitbit/incubator-nuttx/tools'
make[1]: Leaving directory '/home/user/code/fitbit/incubator-nuttx/tools'
make[1]: Entering directory '/home/user/code/fitbit/incubator-nuttx'
make[2]: Entering directory '/home/user/code/fitbit/incubator-nuttx/boards'
make[2]: Leaving directory '/home/user/code/fitbit/incubator-nuttx/boards'
make[2]: Entering directory '/home/user/code/fitbit/incubator-nuttx-apps'
make[3]: Entering directory '/home/user/code/fitbit/incubator-nuttx-apps/platform'
make[3]: Leaving directory '/home/user/code/fitbit/incubator-nuttx-apps/platform'
make[3]: Entering directory '/home/user/code/fitbit/incubator-nuttx-apps/builtin'
make[3]: Leaving directory '/home/user/code/fitbit/incubator-nuttx-apps/builtin'
make[2]: Leaving directory '/home/user/code/fitbit/incubator-nuttx-apps'
make[2]: Entering directory '/home/user/code/fitbit/incubator-nuttx/graphics'
make[3]: Entering directory '/home/user/code/fitbit/incubator-nuttx/graphics/nxglib'
make[3]: Leaving directory '/home/user/code/fitbit/incubator-nuttx/graphics/nxglib'
make[3]: Entering directory '/home/user/code/fitbit/incubator-nuttx/graphics/nxglib'
make[3]: Leaving directory '/home/user/code/fitbit/incubator-nuttx/graphics/nxglib'
make[3]: Entering directory '/home/user/code/fitbit/incubator-nuttx/graphics/nxglib'
make[3]: Leaving directory '/home/user/code/fitbit/incubator-nuttx/graphics/nxglib'
make[2]: Leaving directory '/home/user/code/fitbit/incubator-nuttx/graphics'
make[1]: Leaving directory '/home/user/code/fitbit/incubator-nuttx'
Create .version
make[1]: Entering directory '/home/user/code/fitbit/incubator-nuttx/tools'
make[1]: Leaving directory '/home/user/code/fitbit/incubator-nuttx/tools'
Create version.h
LN: include/arch to arch/arm/include
LN: include/arch/board to /home/user/code/fitbit/incubator-nuttx/boards/arm/stm32/stm32f3discovery/include
LN: include/arch/chip to arch/arm/include/stm32
LN: arch/arm/src/board to /home/user/code/fitbit/incubator-nuttx/boards/arm/stm32/stm32f3discovery/../common
LN: arch/arm/src/board/board to /home/user/code/fitbit/incubator-nuttx/boards/arm/stm32/stm32f3discovery/src
LN: arch/arm/src/chip to arch/arm/src/stm32
LN: /home/user/code/fitbit/incubator-nuttx/drivers/platform to /home/user/code/fitbit/incubator-nuttx/drivers/dummy
make[1]: Entering directory '/home/user/code/fitbit/incubator-nuttx/boards'
make[1]: Leaving directory '/home/user/code/fitbit/incubator-nuttx/boards'
make[1]: Entering directory '/home/user/code/fitbit/incubator-nuttx-apps'
make[2]: Entering directory '/home/user/code/fitbit/incubator-nuttx-apps/platform'
LN: platform/board to /home/user/code/fitbit/incubator-nuttx-apps/platform/dummy
make[2]: Leaving directory '/home/user/code/fitbit/incubator-nuttx-apps/platform'
make[1]: Leaving directory '/home/user/code/fitbit/incubator-nuttx-apps'
make context  0.95s user 0.45s system 109% cpu 1.281 total
```
second time running context:
```
➜  incubator-nuttx git:(improve-make-context) time make context
Create .version
Create version.h
LN: include/arch/board to /home/user/code/fitbit/incubator-nuttx/boards/arm/stm32/stm32f3discovery/include
make[1]: Entering directory '/home/user/code/fitbit/incubator-nuttx/boards'
make[1]: Nothing to be done for 'dirlinks'.
make[1]: Leaving directory '/home/user/code/fitbit/incubator-nuttx/boards'
make[1]: Entering directory '/home/user/code/fitbit/incubator-nuttx-apps'
make[2]: Entering directory '/home/user/code/fitbit/incubator-nuttx-apps/platform'
LN: platform/board to /home/user/code/fitbit/incubator-nuttx-apps/platform/dummy
make[2]: Leaving directory '/home/user/code/fitbit/incubator-nuttx-apps/platform'
make[1]: Leaving directory '/home/user/code/fitbit/incubator-nuttx-apps'
make context  0.30s user 0.20s system 121% cpu 0.414 total
```
This commit is contained in:
Alan Rosenthal
2021-12-22 10:59:47 -05:00
committed by Alan Carvalho de Assis
parent fe2830ec94
commit 5d07dc96a8
3 changed files with 64 additions and 16 deletions
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@@ -48,3 +48,5 @@ core
Make*.dep
uImage
/external
# $(TOPDIR)/Makefile.[unix|win]::$(CONTEXTDIRS_DEPS)
.context