docs/linux_chromium_arm.md - Issue 1318153003: [Docs] fixes

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Issue 1318153003: [Docs] fixes (Closed) Base URL: https://chromium.googlesource.com/chromium/src@master

Patch Set: Created 5 years, 3 months ago

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1 # Linux Chromium Arm Recipes	1 # Linux Chromium Arm Recipes

2	2

3 [TOC]	3 [TOC]

4	4

5 ## Recipe1: Building for an ARM CrOS device	5 ## Recipe1: Building for an ARM CrOS device

6	6

7 This recipe uses `ninja` (instead of `make`) so its startup time is much lower	7 This recipe uses `ninja` (instead of `make`) so its startup time is much lower

8 (sub-1s, instead of tens of seconds), is integrated with goma (for	8 (sub-1s, instead of tens of seconds), is integrated with goma (for

9 google-internal users) for very high parallelism, and uses `sshfs` instead of	9 google-internal users) for very high parallelism, and uses `sshfs` instead of

10 `scp` to significantly speed up the compile-run cycle. It has moved to	10 `scp` to significantly speed up the compile-run cycle. It has moved to

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49 but are not needed at build-time (when you run make/ninja).	49 but are not needed at build-time (when you run make/ninja).

50	50

51 ## Testing	51 ## Testing

52	52

53 ### Automated Build and Testing	53 ### Automated Build and Testing

54	54

55 Chromium's testing infrastructure for ARM/Linux is (to say the least)	55 Chromium's testing infrastructure for ARM/Linux is (to say the least)

56 in its infancy. There are currently two builders setup, one on the	56 in its infancy. There are currently two builders setup, one on the

57 FYI waterfall and one the the trybot waterfall:	57 FYI waterfall and one the the trybot waterfall:

58	58

59 http://build.chromium.org/p/chromium.fyi/builders/Linux%20ARM%20Cross-Compile	59 * [Linux ARM Cross-Compile](http://build.chromium.org/p/chromium.fyi/builders/ Linux%20ARM%20Cross-Compile)

60 http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_arm	60 * [linux_arm](http://build.chromium.org/p/tryserver.chromium.linux/builders/li nux_arm)

61	61

62 These builders cross compile on x86-64 and then trigger testing on real ARM hard	62 These builders cross compile on x86-64 and then trigger testing on real ARM hard

63 bots:	63 bots:

64	64

65 http://build.chromium.org/p/chromium.fyi/builders/Linux%20ARM%20Tests%20%28Panda %29/	65 * [Linux ARM Tests (Panda)](http://build.chromium.org/p/chromium.fyi/builders/ Linux%20ARM%20Tests%20%28Panda%29/)

66 http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_arm_tester	66 * [linux_arm_tester](http://build.chromium.org/p/tryserver.chromium.linux/buil ders/linux_arm_tester)

67	67

68 Unfortunately, even those the builders are usually green, the testers are not	68 Unfortunately, even those the builders are usually green, the testers are not

69 yet well maintained or monitored.	69 yet well maintained or monitored.

70	70

71 There is compile-only trybot and fyi bot also:	71 There is compile-only trybot and fyi bot also:

72	72

73 http://build.chromium.org/p/chromium.fyi/builders/Linux%20ARM	73 * [Linux ARM](http://build.chromium.org/p/chromium.fyi/builders/Linux%20ARM)

74 http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_arm_compile	74 * [linux_arm_compile](http://build.chromium.org/p/tryserver.chromium.linux/bui lders/linux_arm_compile)

75	75

76 ### Testing with QEMU	76 ### Testing with QEMU

77	77

78 If you don't have a real ARM machine, you can test with QEMU. For instance,	78 If you don't have a real ARM machine, you can test with QEMU. For instance,

79 there are some prebuilt QEMU Debian images here:	79 there are some prebuilt QEMU Debian images here:

80 http://people.debian.org/~aurel32/qemu/. Another option is to use the rootfs	80 http://people.debian.org/~aurel32/qemu/. Another option is to use the rootfs

81 generated by rootstock, as mentioned above.	81 generated by rootstock, as mentioned above.

82	82

83 Here's a minimal xorg.conf if needed:	83 Here's a minimal xorg.conf if needed:

84	84

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116 Modes "1024x768" "800x600" "640x480"	116 Modes "1024x768" "800x600" "640x480"

117 EndSubSection	117 EndSubSection

118 EndSection	118 EndSection

119 ```	119 ```

120	120

121 ### Notes	121 ### Notes

122	122

123 * To building for thumb reduces the stripped release binary by around 9MB,	123 * To building for thumb reduces the stripped release binary by around 9MB,

124 equating to ~33% of the binary size. To enable thumb, set `'arm_thumb': 1`	124 equating to ~33% of the binary size. To enable thumb, set `'arm_thumb': 1`

125 * TCmalloc does not have an ARM port, so it is disabled.	125 * TCmalloc does not have an ARM port, so it is disabled.

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