commit:     e2e19839d429095acc15c6591d680498e1ae3597
Author:     Sergei Trofimovich <slyfox <AT> gentoo <DOT> org>
AuthorDate: Fri Jun 11 22:51:28 2021 +0000
Commit:     Sergei Trofimovich <slyfox <AT> gentoo <DOT> org>
CommitDate: Fri Jun 11 22:51:37 2021 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=e2e19839

dev-util/ccache: add USE=static-c++ which embeds libstdc++

To ease building gcc with ccache we need to handle the case of
LD_PRELOAD=./inplace/libstdc++.so injected by gcc's build system.

USE=static-c++ uses -static-libstdc++ for it.

Reported-by: Mihai Moldovan
Bug: https://bugs.gentoo.org/761220
Package-Manager: Portage-3.0.19, Repoman-3.0.3
Signed-off-by: Sergei Trofimovich <slyfox <AT> gentoo.org>

 dev-util/ccache/ccache-4.3-r1.ebuild | 89 ++++++++++++++++++++++++++++++++++++
 dev-util/ccache/metadata.xml         |  3 ++
 2 files changed, 92 insertions(+)

diff --git a/dev-util/ccache/ccache-4.3-r1.ebuild 
b/dev-util/ccache/ccache-4.3-r1.ebuild
new file mode 100644
index 00000000000..1410477f616
--- /dev/null
+++ b/dev-util/ccache/ccache-4.3-r1.ebuild
@@ -0,0 +1,89 @@
+# 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}"/${PN}-4.1-avoid-run-user.patch
+)
+
+src_prepare() {
+       cmake_src_prepare
+
+       sed \
+               -e "/^EPREFIX=/s:'':'${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/metadata.xml b/dev-util/ccache/metadata.xml
index e27519ca728..f673d3c5836 100644
--- a/dev-util/ccache/metadata.xml
+++ b/dev-util/ccache/metadata.xml
@@ -5,6 +5,9 @@
                <email>[email protected]</email>
                <name>Gentoo Toolchain Project</name>
        </maintainer>
+       <use>
+               <flag name="static-c++">Avoid dynamic dependency on gcc's 
libstdc++.</flag>
+       </use>
        <longdescription lang="en">
                ccache acts as a caching pre-processor to C/C++ compilers, 
improving
                compilation time when recompiling previously compiled source.

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