[v5,14/29] CI: make ci/{lib,install-dependencies}.sh POSIX-compatible

Commit Message

Ævar Arnfjörð Bjarmason April 21, 2022, 6:23 p.m. UTC

Change the unportable constructs in the "ci/install-dependencies.sh"
scripts to use POSIX replacements, and have it run under "/bin/sh"
instead of "/usr/bin/env bash". We needed to:

* Replace pushd/popd with a sub-shell.
* Change "mkdir --parents" to "mkdir -p".
* Use POSIX "export" syntax.

This is in preparation for combining this script and
"ci/install-docker-dependencies.sh", which doesn't have access to
"bash".

While we're at it change "if [" to "if test" in ci/lib.sh. This isn't
strictly speaking a case of POSIX-incompatibility, but that syntax was
being used there because this code was using idiomatic bash
constructs. Let's have it use our usual style of "if test" instead.

Signed-off-by: Ævar Arnfjörð Bjarmason <[e-mail]>
---
 ci/install-dependencies.sh | 27 +++++++++++++++++----------
 ci/lib.sh                  |  4 ++--
 2 files changed, 19 insertions(+), 12 deletions(-)

Patch

diff --git a/ci/install-dependencies.sh b/ci/install-dependencies.sh
index 01006379fd0..1ad4dd7db39 100755
--- a/ci/install-dependencies.sh
+++ b/ci/install-dependencies.sh
@@ -1,4 +1,4 @@ 
-#!/usr/bin/env bash
+#!/bin/sh
 #
 # Install dependencies required to build and test Git on Linux and macOS
 #
@@ -21,7 +21,8 @@  ubuntu-latest)
 
 	P4_PATH="$HOME/custom/p4"
 	GIT_LFS_PATH="$HOME/custom/git-lfs"
-	export PATH="$GIT_LFS_PATH:$P4_PATH:$PATH"
+	PATH="$GIT_LFS_PATH:$P4_PATH:$PATH"
+	export PATH
 	if test -n "$GITHUB_PATH"
 	then
 		echo "$PATH" >>"$GITHUB_PATH"
@@ -33,22 +34,28 @@  ubuntu-latest)
 	sudo apt-get -q update
 	sudo apt-get -q -y install language-pack-is libsvn-perl apache2 \
 		$UBUNTU_COMMON_PKGS $CC_PACKAGE
-	mkdir --parents "$P4_PATH"
-	pushd "$P4_PATH"
+	mkdir -p "$P4_PATH"
+	(
+		cd "$P4_PATH"
 		wget --quiet "$P4WHENCE/bin.linux26x86_64/p4d"
 		wget --quiet "$P4WHENCE/bin.linux26x86_64/p4"
 		chmod u+x p4d
 		chmod u+x p4
-	popd
-	mkdir --parents "$GIT_LFS_PATH"
-	pushd "$GIT_LFS_PATH"
+	)
+	mkdir -p "$GIT_LFS_PATH"
+	(
+		cd "$GIT_LFS_PATH"
 		wget --quiet "$LFSWHENCE/git-lfs-linux-amd64-$LINUX_GIT_LFS_VERSION.tar.gz"
 		tar --extract --gunzip --file "git-lfs-linux-amd64-$LINUX_GIT_LFS_VERSION.tar.gz"
 		cp git-lfs-$LINUX_GIT_LFS_VERSION/git-lfs .
-	popd
+	)
 	;;
 macos-latest)
-	export HOMEBREW_NO_AUTO_UPDATE=1 HOMEBREW_NO_INSTALL_CLEANUP=1
+	HOMEBREW_NO_AUTO_UPDATE=1
+	export HOMEBREW_NO_AUTO_UPDATE
+	HOMEBREW_NO_INSTALL_CLEANUP=1
+	export HOMEBREW_NO_INSTALL_CLEANUP
+
 	# Uncomment this if you want to run perf tests:
 	# brew install gnu-time
 	brew link --force gettext
@@ -62,7 +69,7 @@  macos-latest)
 
 	if test -n "$CC_PACKAGE"
 	then
-		BREW_PACKAGE=${CC_PACKAGE/-/@}
+		BREW_PACKAGE=$(echo $CC_PACKAGE | tr '-' '@')
 		brew install "$BREW_PACKAGE"
 		brew link "$BREW_PACKAGE"
 	fi
diff --git a/ci/lib.sh b/ci/lib.sh
index 43231862aa5..2fd022c94bc 100755
--- a/ci/lib.sh
+++ b/ci/lib.sh
@@ -94,7 +94,7 @@  ubuntu-latest)
 		break
 	fi
 
-	if [ "$jobname" = linux-gcc ]
+	if test "$jobname" = linux-gcc
 	then
 		MAKEFLAGS="$MAKEFLAGS PYTHON_PATH=/usr/bin/python3"
 	else
@@ -104,7 +104,7 @@  ubuntu-latest)
 	setenv --test GIT_TEST_HTTPD true
 	;;
 macos-latest)
-	if [ "$jobname" = osx-gcc ]
+	if test "$jobname" = osx-gcc
 	then
 		MAKEFLAGS="$MAKEFLAGS PYTHON_PATH=$(which python3)"
 	else