dev-util/ccache: backport PWD=. handling

Reported-by: 12101111
Closes: https://bugs.gentoo.org/751355
Package-Manager: Portage-3.0.20, Repoman-3.0.3
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>

2 files changed, 175 insertions, 0 deletions

diff --git a/dev-util/ccache/ccache-4.3-r2.ebuild b/dev-util/ccache/ccache-4.3-r2.ebuild
new file mode 100644
index 000000000000..987b811477e6
--- /dev/null
+++ b/dev-util/ccache/ccache-4.3-r2.ebuild
@@ -0,0 +1,90 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit cmake toolchain-funcs
+
+DESCRIPTION="fast compiler cache"
+HOMEPAGE="https://ccache.dev/"
+SRC_URI="https://github.com/ccache/ccache/releases/download/v${PV}/ccache-${PV}.tar.xz"
+
+LICENSE="GPL-3 LGPL-3"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
+IUSE="static-c++ test"
+
+DEPEND=""
+RDEPEND="${DEPEND}
+	app-arch/zstd:0=
+	dev-util/shadowman
+	sys-apps/gentoo-functions
+"
+# clang-specific tests use dev-libs/elfutils to compare objects for equality.
+# Let's pull in the dependency unconditionally.
+DEPEND+="
+	test? ( dev-libs/elfutils )
+"
+BDEPEND="
+	app-text/asciidoc
+"
+
+RESTRICT="!test? ( test )"
+
+DOCS=( doc/{AUTHORS,MANUAL,NEWS}.adoc CONTRIBUTING.md README.md )
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-3.5-nvcc-test.patch
+	"${FILESDIR}"/${PN}-4.0-objdump.patch
+	"${FILESDIR}"/${PN}-4.1-avoid-run-user.patch
+	"${FILESDIR}"/${P}-PWD.patch
+)
+
+src_prepare() {
+	cmake_src_prepare
+
+	sed \
+		-e "/^EPREFIX=/s:'':'${EPREFIX}':" \
+		"${FILESDIR}"/ccache-config-3 > ccache-config || die
+
+	# mainly used in tests
+	tc-export CC OBJDUMP
+
+	# Avoid dependency on libstdc++.so. Useful for cases when
+	# we would like to use ccache to build older gcc which injects
+	# into ccache locally built (possibly outdated) libstdc++
+	# See bug #761220 for examples.
+	#
+	# Ideally gcc should not use LD_PRELOAD to avoid this type of failures.
+	use static-c++ && append-ldflags -static-libstdc++
+}
+
+src_configure() {
+	local mycmakeargs=(
+		-DUSE_CCACHE=OFF
+		-DUSE_FASTER_LINKER=OFF
+		-DZSTD_FROM_INTERNET=OFF
+	)
+
+	cmake_src_configure
+}
+
+src_install() {
+	cmake_src_install
+
+	dobin ccache-config
+	insinto /usr/share/shadowman/tools
+	newins - ccache <<<"${EPREFIX}/usr/lib/ccache/bin"
+}
+
+pkg_prerm() {
+	if [[ -z ${REPLACED_BY_VERSION} && ${ROOT:-/} == / ]] ; then
+		eselect compiler-shadow remove ccache
+	fi
+}
+
+pkg_postinst() {
+	if [[ ${ROOT:-/} == / ]]; then
+		eselect compiler-shadow update ccache
+	fi
+}
diff --git a/dev-util/ccache/files/ccache-4.3-PWD.patch b/dev-util/ccache/files/ccache-4.3-PWD.patch
new file mode 100644
index 000000000000..3943dab5bd2e
--- /dev/null
+++ b/dev-util/ccache/files/ccache-4.3-PWD.patch
@@ -0,0 +1,85 @@
+https://github.com/ccache/ccache/commit/2d720aed1843b47aafb2af8bfd15139228545e2b.patch
+https://bugs.gentoo.org/751355
+
+From 2d720aed1843b47aafb2af8bfd15139228545e2b Mon Sep 17 00:00:00 2001
+From: Joel Rosdahl <joel@rosdahl.net>
+Date: Wed, 16 Jun 2021 18:19:04 +0200
+Subject: [PATCH] =?UTF-8?q?Don=E2=80=99t=20crash=20on=20relative=20PWD=20v?=
+ =?UTF-8?q?alue?=
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Even though PWD “shall represent an absolute pathname of the current
+working directory”[1], we shouldn’t crash if a user sets it to a
+relative path.
+
+[1]: https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08_03
+
+Fixes #860.
+---
+ src/Util.cpp             |  2 +-
+ test/run                 |  1 +
+ test/suites/basedir.bash | 32 ++++++++++++++++++++++++++++++++
+ 3 files changed, 34 insertions(+), 1 deletion(-)
+
+--- a/src/Util.cpp
++++ b/src/Util.cpp
+@@ -617,7 +617,7 @@ get_apparent_cwd(const std::string& actual_cwd)
+   return actual_cwd;
+ #else
+   auto pwd = getenv("PWD");
+-  if (!pwd) {
++  if (!pwd || !Util::is_absolute_path(pwd)) {
+     return actual_cwd;
+   }
+ 
+--- a/test/run
++++ b/test/run
+@@ -356,6 +356,7 @@ reset_environment() {
+     unset TERM
+     unset XDG_CACHE_HOME
+     unset XDG_CONFIG_HOME
++    export PWD=$(pwd)
+ 
+     export CCACHE_DETECT_SHEBANG=1
+     export CCACHE_DIR=$ABS_TESTDIR/.ccache
+--- a/test/suites/basedir.bash
++++ b/test/suites/basedir.bash
+@@ -311,4 +311,36 @@ EOF
+         expect_stat 'cache miss' 1
+         expect_equal_content reference.stderr ccache.stderr
+     fi
++
++    # -------------------------------------------------------------------------
++    TEST "Relative PWD"
++
++    cd dir1
++    CCACHE_BASEDIR="$(pwd)" PWD=. $CCACHE_COMPILE -I$(pwd)/include -c src/test.c
++    expect_stat 'cache hit (direct)' 0
++    expect_stat 'cache hit (preprocessed)' 0
++    expect_stat 'cache miss' 1
++
++    cd ../dir2
++    CCACHE_BASEDIR="$(pwd)" PWD=. $CCACHE_COMPILE -I$(pwd)/include -c src/test.c
++    expect_stat 'cache hit (direct)' 1
++    expect_stat 'cache hit (preprocessed)' 0
++    expect_stat 'cache miss' 1
++
++    # -------------------------------------------------------------------------
++    TEST "Unset PWD"
++
++    unset PWD
++
++    cd dir1
++    CCACHE_BASEDIR="$(pwd)" $CCACHE_COMPILE -I$(pwd)/include -c src/test.c
++    expect_stat 'cache hit (direct)' 0
++    expect_stat 'cache hit (preprocessed)' 0
++    expect_stat 'cache miss' 1
++
++    cd ../dir2
++    CCACHE_BASEDIR="$(pwd)" $CCACHE_COMPILE -I$(pwd)/include -c src/test.c
++    expect_stat 'cache hit (direct)' 1
++    expect_stat 'cache hit (preprocessed)' 0
++    expect_stat 'cache miss' 1
+ }