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#!/bin/bash
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[% c("var/set_default_env") -%]
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[% c("var/setarch") -%]
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distdir=/var/tmp/dist/[% project %]
mkdir -p /var/tmp/dist

[% IF c("var/linux") %]
  # Config options for hardening-wrapper
  export DEB_BUILD_HARDENING=1
  export DEB_BUILD_HARDENING_STACKPROTECTOR=1
  export DEB_BUILD_HARDENING_FORTIFY=1
  export DEB_BUILD_HARDENING_FORMAT=1
  export DEB_BUILD_HARDENING_PIE=1
[% END %]

mkdir -p /var/tmp/build

# Building go 1.4.x
# This is needed to bootstrap the go that we actually use
# https://golang.org/doc/install/source#go14
tar -C /var/tmp/build --transform='s,^go\>,go1.4,' -xf $rootdir/[% c('input_files_by_name/go14') %]
cd /var/tmp/build/go1.4/src
# Disable cgo to avoid conflicts with newer GCC. cgo is not needed for the bootstrap go.
# https://github.com/golang/go/issues/13114#issuecomment-186922245
# Disable CC etc. that are set up for cross builds.
CGO_ENABLED=0 CC= CFLAGS= LDFLAGS= ./make.bash
export GOROOT_BOOTSTRAP="/var/tmp/build/go1.4"

cd $rootdir
[% IF ! c("var/linux") %]
  [% pc(c('var/compiler'), 'var/setup', { compiler_tarfile => c('input_files_by_name/' _ c('var/compiler')) }) %]
[% END %]

# Building go
# http://golang.org/doc/install/source#environment
tar -C /var/tmp/dist -xf $rootdir/[% c('input_files_by_name/go') %]
export GOROOT="$distdir"
cd /var/tmp/dist/go/src
[% IF c("var/linux") -%]
  ./make.bash
[% ELSIF c("var/osx") -%]
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  unset LDFLAGS
  rm -Rf $clangdir/helpers
  export CC="$clangdir/bin/clang [% c("var/FLAGS") %]"
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  # Create a cc-for-target script that closes over CC, CFLAGS, and LDFLAGS.
  # Go's CC_FOR_TARGET only allows a command name, not a command with arguments.
  # https://github.com/golang/go/issues/15457
  CC_FOR_TARGET="$(pwd)/cc-for-target"
  echo "#!/bin/sh" > "$CC_FOR_TARGET"
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  echo "exec $CC $CFLAGS $LDFLAGS \"\$@\"" >> "$CC_FOR_TARGET"
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  chmod +x "$CC_FOR_TARGET"
  # http://golang.org/doc/install/source#environment
  export GOOS=darwin
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  export GOARCH=amd64
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  # Remove a preprocessor directive that causes problems when building with the 10.7 SDK.
  # https://github.com/golang/go/issues/17732
  sed -i -e '/^#cgo CFLAGS:/s/-D__MAC_OS_X_VERSION_MAX_ALLOWED=1060//' crypto/x509/root_cgo_darwin.go
  CGO_ENABLED=1 CC_FOR_TARGET="$CC_FOR_TARGET" CC= CFLAGS= LDFLAGS= ./make.bash
[% ELSIF c("var/windows") -%]
  # Create a cc-for-target script that closes over CC, CFLAGS, and LDFLAGS.
  # Go's CC_FOR_TARGET only allows a command name, not a command with arguments.
  # https://github.com/golang/go/issues/15457
  CC_FOR_TARGET="$(pwd)/cc-for-target"
  echo "#!/bin/sh" > "$CC_FOR_TARGET"
  echo "exec i686-w64-mingw32-gcc [% c("var/CFLAGS") %] [% c("var/LDFLAGS") %] \"\$@\"" >> "$CC_FOR_TARGET"
  chmod +x "$CC_FOR_TARGET"
  # http://golang.org/doc/install/source#environment
  export GOOS=windows
  export GOARCH=386
  CGO_ENABLED=1 CC_FOR_TARGET="$CC_FOR_TARGET" CC= CFLAGS= LDFLAGS= ./make.bash
[% END -%]

cd /var/tmp/dist
[% c('tar', {
        tar_src => [ project ],
        tar_args => '-czf ' _ dest_dir _ '/' _ c('filename'),
    }) %]