generic "add LLVM_COMPAT 20 everywhere", untested

app-forensics/aflplusplus/aflplusplus-4.30c.ebuild

@@ -0,0 +1,97 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 20 )
+PYTHON_COMPAT=( python3_{10..13} )
+inherit flag-o-matic toolchain-funcs llvm-r1 optfeature python-single-r1
+
+AFL_PATCHSET="${PN}-4.30c-patches"
+DESCRIPTION="Fork of AFL, the popular compile-time instrumentation fuzzer"
+HOMEPAGE="https://github.com/AFLplusplus/AFLplusplus"
+SRC_URI="https://github.com/AFLplusplus/AFLplusplus/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+SRC_URI+=" https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}/${AFL_PATCHSET}.tar.xz"
+S="${WORKDIR}"/AFLplusplus-${PV}
+
+LICENSE="Apache-2.0"
+SLOT="0"
+KEYWORDS="amd64 arm64"
+IUSE="test"
+REQUIRED_USE="${PYTHON_REQUIRED_USE}"
+
+# Tests involve heavy use of LD_PRELOAD in some cases
+# This isn't compatible with sandbox
+RESTRICT="test"
+
+RDEPEND="
+	${PYTHON_DEPS}
+	$(llvm_gen_dep '
+		llvm-core/clang:${LLVM_SLOT}=
+		llvm-core/llvm:${LLVM_SLOT}=
+	')
+	!app-forensics/afl
+"
+DEPEND="
+	${RDEPEND}
+	test? ( dev-util/cmocka )
+"
+
+QA_FLAGS_IGNORED="
+	usr/lib.*/afl/afl-gcc-cmplog-pass.so
+	usr/lib.*/afl/afl-gcc-cmptrs-pass.so
+"
+QA_PREBUILT="usr/share/afl/testcases/others/elf/small_exec.elf"
+
+PATCHES=(
+	"${WORKDIR}"/${AFL_PATCHSET}
+)
+
+pkg_setup() {
+	llvm-r1_pkg_setup
+	python-single-r1_pkg_setup
+}
+
+mymake() {
+	# afl-fuzz spews garbage to stdout if the environment contains any
+	# variables whose name beginning with USE_ (including the underscore),
+	# regardless of their value (even if empty!).  The ebuild environment
+	# contains several such variables and the garbage that gets printed
+	# ends up in the generated man page.
+	#
+	# We can work around the problem by unsetting all these variables when
+	# running make.
+	local badvars=("${!USE_@}")
+
+	env "${badvars[@]/#/-u}" emake \
+		CC="$(tc-getCC)" \
+		CXX="$(tc-getCXX)" \
+		CFLAGS_FLTO="" \
+		PREFIX="${EPREFIX}/usr" \
+		HELPER_PATH="${EPREFIX}/usr/$(get_libdir)/afl" \
+		DOC_PATH="${EPREFIX}/usr/share/doc/${PF}" \
+		MAN_PATH="${EPREFIX}/usr/share/man/man8" \
+		"$@"
+}
+
+src_compile() {
+	# bug #945258
+	append-cflags -std=gnu17
+
+	mymake
+}
+
+src_test() {
+	mymake test
+}
+
+src_install() {
+	mymake DESTDIR="${D}" install
+	dostrip -x /usr/share/afl/testcases/
+}
+
+pkg_postinst() {
+	# TODO: Any others?
+	optfeature "fuzzing with AFL_USE_ASAN" llvm-runtimes/compiler-rt-sanitizers[asan]
+	optfeature "fuzzing with AFL_USE_MSAN" llvm-runtimes/compiler-rt-sanitizers[msan]
+}