[OE-core] [PATCH] autotools.bbclass: output failed config.log

[Hongxu Jia]

On 5/15/19 7:08 PM, Adrian Bunk wrote:
> The end of config.log often contains expected error messages completely
> unrelated to the actual problem.

I am afraid you did not suffer pain from it, the most related message

with do_configure failure is config.log. Take a example, as my previous

commit [grub/grub-efi: fix unrecognized command line option

'-pipe-Wno-error' in CFLAGS]

It takes me hours to reproduce grub/grub-efi build faiure (only

happen while DEBUG_BUILD = "1"), and from log.do_configure, I can't

tell the root cause

...

checking for i586-wrs-linux-gcc... i586-wrs-linux-gcc  -m32 -march=i586 
--sysroot=TOPDIR/tmp-glibc/work/i586-wrs-linux/grub/2.02-r0/recipe-sysroot
checking whether the C compiler works... no
configure: error: in 
`TOPDIR/tmp-glibc/work/i586-wrs-linux/grub/2.02-r0/build':
configure: error: C compiler cannot create executables

...


But from config.log, I got more detail '-pipe-Wno-error'

which helps me to locate the issue

...

configure:5094: i586-wrs-linux-gcc  -m32 -march=i586 
--sysroot=/buildarea1/hjia/wrlinux-1019/build_master-wr_qemux86_2019051509/build/tmp-glibc/work/i586-wrs-linux/grub/2.02-r0/recipe-sysroot 
-Og -g -feliminate-unused-debug-types 
-fmacro-prefix-map=/buildarea1/hjia/wrlinux-1019/build_master-wr_qemux86_2019051509/build/tmp-glibc/work/i586-wrs-linux/grub/2.02-r0=/usr/src/debug/grub/2.02-r0 
-fdebug-prefix-map=/buildarea1/hjia/wrlinux-1019/build_master-wr_qemux86_2019051509/build/tmp-glibc/work/i586-wrs-linux/grub/2.02-r0=/usr/src/debug/grub/2.02-r0 
-fdebug-prefix-map=/buildarea1/hjia/wrlinux-1019/build_master-wr_qemux86_2019051509/build/tmp-glibc/work/i586-wrs-linux/grub/2.02-r0/recipe-sysroot= 
-fdebug-prefix-map=/buildarea1/hjia/wrlinux-1019/build_master-wr_qemux86_2019051509/build/tmp-glibc/work/i586-wrs-linux/grub/2.02-r0/recipe-sysroot-native= 
-pipe-Wno-error  -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed 
-fstack-protector-strong -Wl,-z,relro,-z,now conftest.c >&5
i586-wrs-linux-gcc: error: unrecognized command line option 
'-pipe-Wno-error'; did you mean '-Wno-error'?
...
configure:5141: error: in 
`/buildarea1/hjia/wrlinux-1019/build_master-wr_qemux86_2019051509/build/tmp-glibc/work/i586-wrs-linux/grub/2.02-r0/build':
configure:5143: error: C compiler cannot create executables

...


> Debian autobuilders already dump config.log when when configuring failed,
> and there it is a common problem that people end up searching for the
> problem in the wrong places due to that.

It's another story, it is better that autobuilder provide sufficient and

necessary info and data, not only config.log, but also local.conf,

all available log.do_***, sources in ${B} and ${S}, even data in ${WORKDIR},

result of `bitbake -e'

but before we got there, the fix is best choice for do_configure failure

//Hongxu

i

//Hongxu

> If possible, it would therefore be better to make it accessible separately.