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build.bash: use -trimpath for reproducible builds

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Support both Go 1.7...1.9 and Go 1.10 by checking the
version and using the appropropriate syntax.

We trim GOPATH/src and use both -gcflags and -asmflags like Debian does in
ab2bbcfc00/lib/Debian/Debhelper/Buildsystem/golang.pm (L465) .
This commit is contained in:
Jakob Unterwurzacher 2018-12-16 20:39:01 +01:00
parent d32c149266
commit bf241ce77e
1 changed files with 15 additions and 2 deletions
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17
build.bash
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@ -64,11 +64,24 @@ if [[ -n ${SOURCE_DATE_EPOCH:-} ]] ; then
BUILDDATE=$(date --utc --date="@${SOURCE_DATE_EPOCH}" +%Y-%m-%d)
fi
# For reproducible builds, we get rid of $HOME references in the binary
# using "-trimpath".
# Note: we have to set both -gcflags and -asmflags because otherwise
# "$HOME/go/src/golang.org/x/sys/unix/asm_linux_amd64.s" stays in the binary.
GV=$(go version)
if [[ $GV == *"1.7"* ]] || [[ $GV == *"1.8"* ]] || [[ $GV == *"1.9"* ]] ; then
TRIM="-trimpath=${GOPATH1}/src"
else
# Go 1.10 changed the syntax. You now have to prefix "all=" to affect
# all compiled packages.
TRIM="all=-trimpath=${GOPATH1}/src"
fi
LDFLAGS="-X main.GitVersion=$GITVERSION -X main.GitVersionFuse=$GITVERSIONFUSE -X main.BuildDate=$BUILDDATE"
go build "-ldflags=$LDFLAGS" "$@"
go build "-ldflags=$LDFLAGS" "-gcflags=$TRIM" "-asmflags=$TRIM" "$@"
(cd gocryptfs-xray; go build "$@")
(cd gocryptfs-xray; go build "-gcflags=$TRIM" "-asmflags=$TRIM" "$@")
./gocryptfs -version