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# Copyright 2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
DESCRIPTION="Google's PDF rendering engine (standalone source build)"
HOMEPAGE="https://pdfium.googlesource.com"
inherit git-r3 ninja-utils
CHROMIUM_VERSION="147.0.${PV}.0"
TEST_FONT="cd96fc55dc243f6c6f4cb63ad117cad6cd48dceb"
EGIT_REPO_URI="https://pdfium.googlesource.com/pdfium.git"
EGIT_BRANCH="chromium/${PV}"
EGIT_COMMIT="2558d5d970fb3bf6c45e8580c20df91fb9c23ddd"
SRC_URI="
https://raw.githubusercontent.com/chromium/chromium/${CHROMIUM_VERSION}/tools/generate_shim_headers/generate_shim_headers.py
test? ( https://chromium-fonts.storage.googleapis.com/${TEST_FONT} -> chromium-testfonts-${TEST_FONT}.tar.gz )"
LICENSE="BSD"
SLOT="0"
KEYWORDS="~amd64"
IUSE="test"
RESTRICT="!test? ( test )"
BDEPEND="
dev-build/gn
test? (
dev-cpp/gtest
dev-cpp/simdutf
)
"
DEPEND="
dev-cpp/fast_float
dev-libs/glib
dev-libs/icu
media-libs/freetype
media-libs/harfbuzz
media-libs/lcms
media-libs/libjpeg-turbo
media-libs/libpng
media-libs/openjpeg
virtual/zlib
"
RDEPEND="${DEPEND}"
PATCHES=(
"${FILESDIR}"/public_headers.patch
"${FILESDIR}"/shared_library.patch
)
CHROMIUM_REPO="https://chromium.googlesource.com"
src_unpack() {
# pdfium
git-r3_src_unpack
EGIT_BRANCH=""
# build
EGIT_REPO_URI="${CHROMIUM_REPO}"/chromium/src/build
EGIT_CHECKOUT_DIR="${S}"/build
EGIT_COMMIT=$(awk -F\' '$2 == "build_revision" && NF == 5 {print $4}' "${S}"/DEPS)
git-r3_src_unpack
# abseil-cpp
EGIT_REPO_URI="${CHROMIUM_REPO}"/chromium/src/third_party/abseil-cpp
EGIT_CHECKOUT_DIR="${S}"/third_party/abseil-cpp
EGIT_COMMIT=$(awk -F\' '$2 == "abseil_revision" && NF == 5 {print $4}' "${S}"/DEPS)
git-r3_src_unpack
if use test; then
# gtest
EGIT_REPO_URI="${CHROMIUM_REPO}"/external/github.com/google/googletest
EGIT_CHECKOUT_DIR="${S}"/third_party/googletest/src
EGIT_COMMIT=$(awk -F\' '$2 == "gtest_revision" && NF == 5 {print $4}' "${S}"/DEPS)
git-r3_src_unpack
# test_fonts
EGIT_REPO_URI="${CHROMIUM_REPO}"/chromium/src/third_party/test_fonts
EGIT_CHECKOUT_DIR="${S}"/third_party/test_fonts
EGIT_COMMIT=$(awk -F\' '$2 == "test_fonts_revision" && NF == 5 {print $4}' "${S}"/DEPS)
git-r3_src_unpack
tar xf "${DISTDIR}"/chromium-testfonts-${TEST_FONT}.tar.gz -C "${S}"/third_party/test_fonts || die
else
# Remove test dependencies
sed -i \
-e '/\/\/third_party\/test_fonts/d' \
-e '/\/\/third_party\/simdutf/d' \
"${S}"/testing/BUILD.gn || die
fi
# generate_shim_headers
mkdir -p "${S}"/tools/generate_shim_headers || die
cp "${DISTDIR}"/generate_shim_headers.py "${S}"/tools/generate_shim_headers || die
}
src_prepare() {
default
# Unbundle packages
local unbundle=(
icu
simdutf
)
for pkg in "${unbundle[@]}"; do
mkdir -p third_party/"${pkg}" || die
ln -sf "${S}/build/linux/unbundle/${pkg}.gn" "${S}/third_party/${pkg}/BUILD.gn" || die
done
# Use system fast_float
mkdir -p third_party/fast_float/src/include/
ln -sf /usr/include/fast_float third_party/fast_float/src/include/
}
src_configure() {
echo "build_with_chromium = false" > "${S}"/build/config/gclient_args.gni
# Define GN build arguments
local gn_args=(
"clang_use_chrome_plugins=false"
"is_clang=false"
"use_lld=false"
"is_debug=false"
"pdf_enable_v8=false"
"pdf_enable_xfa=false"
"is_component_build=false"
"pdf_is_standalone=true"
"treat_warnings_as_errors=false"
"use_custom_libcxx=false"
"use_glib=true"
"pdf_use_partition_alloc=false"
"pdf_use_skia=false"
"use_sysroot=false"
"use_system_freetype=true"
"pdf_bundle_freetype=false"
"use_remoteexec=false"
"use_system_harfbuzz=true"
"use_system_lcms2=true"
"use_system_libjpeg=true"
"use_system_libopenjpeg2=true"
"use_system_libpng=true"
"use_system_zlib=true"
)
# Generate build files using GN
gn gen out/Release --args="${gn_args[*]}" || die
}
src_compile() {
local -a targets=( pdfium )
if use test ; then
targets+=( pdfium_unittests )
fi
eninja -C out/Release ${targets[@]} || die
}
src_test() {
local skip_tests=(
# May fail with system zlib (produces different results)
FlateModule.Encode
# May fail with use_custom_libcxx=false
RetainPtr.SetContains
)
local test_filter="-$(IFS=:; printf '%s' "${skip_tests[*]}")"
out/Release/pdfium_unittests --gtest_filter="${test_filter}" || die "Tests failed!"
}
src_install() {
# Manual installation of headers and library
dolib.so out/Release/libpdfium.so
insinto /usr/include/pdfium
doins public/*.h
insinto /usr/include/pdfium/cpp
doins public/cpp/*.h
dodir /usr/$(get_libdir)/pkgconfig
sed \
-e "s/@VERSION@/${CHROMIUM_VERSION}/" \
"${FILESDIR}"/libpdfium.pc.in > "${ED}/usr/$(get_libdir)/pkgconfig/libpdfium.pc" || die
}
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