This is example that compare filesize using 'go build' command
Here's the result of running it on Gitpod.
$ cat /etc/os-release
NAME="Ubuntu"
VERSION="20.04 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu Focal Fossa (development branch)"
VERSION_ID="20.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal$ make
rm -f -r bin
mkdir -p bin
-----------------------------------------------------------
go build -o bin/build-normal main.go
go build "-ldflags=-s -w" -o bin/build-with-ldflags main.go
go build -trimpath -o bin/build-with-trimpath main.go
go build "-ldflags=-s -w" -trimpath -o bin/build-with-trimpath-ldflags main.go
upx --lzma -o bin/build-with-upx bin/build-with-trimpath-ldflags
Ultimate Packer for eXecutables
Copyright (C) 1996 - 2018
UPX 3.95 Markus Oberhumer, Laszlo Molnar & John Reiser Aug 26th 2018
File size Ratio Format Name
-------------------- ------ ----------- -----------
1409024 -> 452852 32.14% linux/amd64 build-with-upx
Packed 1 file.
-----------------------------------------------------------
ls -1 bin/build* | xargs wc -c | head -n -1
2056769 bin/build-normal
1409024 bin/build-with-ldflags
2056769 bin/build-with-trimpath
1409024 bin/build-with-trimpath-ldflags
452852 bin/build-with-upx
-----------------------------------------------------------
time -p bin/build-normal
hello Go[999]
[message] hello Go
real 0.00
user 0.00
sys 0.00
-----------------------------------------------------------
time -p bin/build-with-ldflags
hello Go[999]
[message] hello Go
real 0.00
user 0.00
sys 0.00
-----------------------------------------------------------
time -p bin/build-with-trimpath
hello Go[999]
[message] hello Go
real 0.00
user 0.00
sys 0.00
-----------------------------------------------------------
time -p bin/build-with-trimpath-ldflags
hello Go[999]
[message] hello Go
real 0.00
user 0.00
sys 0.00
-----------------------------------------------------------
time -p bin/build-with-upx
hello Go[999]
[message] hello Go
real 0.08
user 0.06
sys 0.01