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annotate doc/Loadtools-on-GTA0x @ 470:1d5bd9a06781

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rvinterf tree Makefiles: split CPPFLAGS from CFLAGS This change is in preparation for allowing CFLAGS to be overridden by users and package builders.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 12 Feb 2019 00:00:18 +0000
parents 1a658ab756fe
children
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1a658ab756fe doc/Loadtools-on-GTA0x article added, replacing the corresponding section
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1 FreeCalypso loadtools are currently a part of FC host tools, but they used to
1a658ab756fe doc/Loadtools-on-GTA0x article added, replacing the corresponding section
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2 be a separate package. In those days that separate package of loadtools could
1a658ab756fe doc/Loadtools-on-GTA0x article added, replacing the corresponding section
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3 be built in two ways:
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4
1a658ab756fe doc/Loadtools-on-GTA0x article added, replacing the corresponding section
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5 1) One could compile and install loadtools on a general-purpose host system
1a658ab756fe doc/Loadtools-on-GTA0x article added, replacing the corresponding section
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6 such as a GNU/Linux PC or laptop, and then potentially use them to operate
1a658ab756fe doc/Loadtools-on-GTA0x article added, replacing the corresponding section
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7 on multiple Calypso targets of different kinds.
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1a658ab756fe doc/Loadtools-on-GTA0x article added, replacing the corresponding section
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9 2) One could compile loadtools to run on the application processor of a
1a658ab756fe doc/Loadtools-on-GTA0x article added, replacing the corresponding section
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10 smartphone such as Openmoko GTA0x, in which case it makes no sense for that
1a658ab756fe doc/Loadtools-on-GTA0x article added, replacing the corresponding section
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11 special build of loadtools to support any target other than the specific
1a658ab756fe doc/Loadtools-on-GTA0x article added, replacing the corresponding section
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12 modem in that smartphone.
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14 Loadtools can be built with compalstage support excluded and with
1a658ab756fe doc/Loadtools-on-GTA0x article added, replacing the corresponding section
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15 GTA0x-specific modem power control included instead. This build will still
1a658ab756fe doc/Loadtools-on-GTA0x article added, replacing the corresponding section
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16 include a bunch of functions of no relevance to GTA0x, but oh well..
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18 To build loadtools for the GTA0x AP, you'll need to make the following
1a658ab756fe doc/Loadtools-on-GTA0x article added, replacing the corresponding section
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19 modifications to loadtools/Makefile:
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21 * Change the CC= line to point to the appropriate cross-compiler (which you'll
1a658ab756fe doc/Loadtools-on-GTA0x article added, replacing the corresponding section
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22 need to provide yourself).
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23
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24 * Change the CFLAGS= line: add the right options to target the ARM920T core in
1a658ab756fe doc/Loadtools-on-GTA0x article added, replacing the corresponding section
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25 the GTA0x AP (e.g., -march=armv4t -mtune=arm920t), and add -DGTA0x_AP_BUILD
1a658ab756fe doc/Loadtools-on-GTA0x article added, replacing the corresponding section
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26 to enable some code that makes sense only when running on the GTA0x AP.
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28 * Change the PROGS= line to not build fc-compalram or fc-buzplay: the latter
1a658ab756fe doc/Loadtools-on-GTA0x article added, replacing the corresponding section
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29 utilities are not applicable to GTA0x.
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31 * Change EXTRA_OBJ= from listing compalload.o to listing compaldummy.o and
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32 gtapower.o instead.
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33
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34 See loadtools/gta-ap-build.sed for an example.