I wouldn't worry about that gdb failure. If you temporarily remove gdb, the test will be skipped.

On 3 Oct 2015, at 09:41, Martin Steffen notifications@github.com wrote:

I tried to build go from the sources. I followed the instruction from

https://golang.org/doc/install/source

** What version of Go are you using (go version)?

go version go1.4.2 linux/amd64

and

go1.4

** What operating system and processor architecture are you using?

fedora 20 (Linux 3.19.8-100.fc20.x86_64 )

Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Thread(s) per core: 2
Core(s) per socket: 2
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 42
Model name: Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz
Stepping: 7
CPU MHz: 2103.320
CPU max MHz: 3200.0000
CPU min MHz: 800.0000
BogoMIPS: 4988.73
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 3072K
NUMA node0 CPU(s): 0-3

** What did you do?

I did the steps as described by the installation-from-source webpage.

clone the go-language repository
execute all.bash in subdir src.
** What did you see?

The tests failed which means, the installation failed. The following steps
went seemingly ok

Building Go toolchain using/ home/msteffen/go1.4.

Building go_bootstrap for host, linux/amd64.

Building packages and commands for linux/amd64.

The following section of the installation failed, namely the testing

Testing packages.

in particular

--- FAIL:
runtime-gdb_test.go:42: gdb version 7.7
runtime-gdb_test.go:146: print mapvar failed: $1 = map[string]string = {[] = , [] = }
FAIL
FAIL runtime 41.748s

which resulted in

2015/10/03 14:54:11 Failed: exit status 1

** Go Versions:

I made the above attempt for

git checkout master
git checkout go1.5
both gave the same error

I also tried go1.4.2 (which is shipped with my fedora version) and I tried
go1.4 (where I downloaded the binared and moved the whole to ~/go1.4). In
all combinations, the result was the same.

However, when I did

git checkout go1.4
that one went through, i.e., the go1.4 version, I was able to build from the sources.

—
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yes, thanks, removing gdb skipped the test and the script ran through. ("disabling" gdb is a radical measure though....). But it did the job.

Yeah, I'm aorry about the workaround. As you probably know gdb and go don't
get along, so your not missing much.

On Sat, 3 Oct 2015 11:32 Martin Steffen notifications@github.com wrote:

yes, thanks, removing gdb skipped the test and the script ran through.
("disabling" gdb is a radical measure though....). But it did the job.

—
Reply to this email directly or view it on GitHub
#12830 (comment).

Sure, no problem. I simply made gdb non-executable temporily and worked just fine.

What does gdb --version print on your system?

According to #11214, gdb 7.7 is sufficient on Ubuntu, and that is what the test looks for. Though it's possible that Ubuntu has patches that Fedora does not.

Still awaiting reply from Oct 3. Too late for Go 1.6.