104 lines
4.4 KiB
Bash
104 lines
4.4 KiB
Bash
#!/usr/bin/env bash
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# Build PDFium from source (Linux / macOS) into third_party/pdfium/install/.
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#
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# depot_tools, the PDFium checkout, and the GN/Ninja build all happen under a
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# BUILD ROOT. depot_tools, GN and Ninja do NOT support spaces anywhere in their
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# own path. If this repo lives under a path containing a space, you MUST point
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# the build root somewhere space-free:
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#
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# PDFIUM_BUILD_ROOT=/tmp/pdfium-build ./third_party/pdfium/build_pdfium.sh
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#
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# The finished static lib + public headers are always installed into
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# third_party/pdfium/install/ (git-ignored) regardless of the build root, so
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# cmake/pdfium.cmake finds them in the same place either way.
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#
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# One-time and slow: a multi-GB gclient sync plus a long compile. See README.md.
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set -euo pipefail
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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INSTALL_DIR="${SCRIPT_DIR}/install"
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PINNED_FILE="${SCRIPT_DIR}/pdfium.pinned"
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# Build root: depot_tools + the checkout live here. Defaults to this directory
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# (fine for repos on a space-free path), but MUST be overridden otherwise.
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BUILD_ROOT="${PDFIUM_BUILD_ROOT:-${SCRIPT_DIR}}"
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case "${BUILD_ROOT}" in
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*' '*)
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echo "ERROR: PDFium build root contains a space: ${BUILD_ROOT}" >&2
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echo "depot_tools, GN and Ninja cannot build under a path with spaces." >&2
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echo "Re-run with a space-free build root, e.g.:" >&2
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echo " PDFIUM_BUILD_ROOT=/tmp/pdfium-build $0" >&2
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exit 1 ;;
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esac
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DEPOT_TOOLS_DIR="${BUILD_ROOT}/depot_tools"
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CHECKOUT_DIR="${BUILD_ROOT}/checkout"
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echo ">> Build root: ${BUILD_ROOT}"
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# --- 1. Read and validate the pinned revision -------------------------------
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PDFIUM_REPO="$(grep -E '^PDFIUM_REPO=' "${PINNED_FILE}" | cut -d= -f2-)"
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PDFIUM_COMMIT="$(grep -E '^PDFIUM_COMMIT=' "${PINNED_FILE}" | cut -d= -f2-)"
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if [[ -z "${PDFIUM_COMMIT}" || "${PDFIUM_COMMIT}" == "REPLACE_WITH_PINNED_COMMIT_SHA" ]]; then
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echo "ERROR: PDFium revision is not pinned. Edit pdfium.pinned first (see README.md)." >&2
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exit 1
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fi
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echo ">> PDFium pinned at ${PDFIUM_COMMIT}"
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# --- 2. depot_tools ---------------------------------------------------------
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mkdir -p "${BUILD_ROOT}"
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if [[ ! -d "${DEPOT_TOOLS_DIR}" ]]; then
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echo ">> Cloning depot_tools"
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git clone --depth 1 https://chromium.googlesource.com/chromium/tools/depot_tools.git \
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"${DEPOT_TOOLS_DIR}"
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fi
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export PATH="${DEPOT_TOOLS_DIR}:${PATH}"
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# Do NOT set DEPOT_TOOLS_UPDATE=0 — depot_tools is designed to self-manage, and
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# on first use it must bootstrap. Reproducibility comes from the pinned PDFium
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# revision below, not from freezing depot_tools.
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# Git settings injected per-process via GIT_CONFIG_* so the user's global git
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# config is never touched. core.autocrlf=false avoids gclient seeing dependency
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# checkouts as "uncommitted changes" on platforms where autocrlf is enabled.
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export GIT_CONFIG_COUNT=2
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export GIT_CONFIG_KEY_0=core.autocrlf GIT_CONFIG_VALUE_0=false
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export GIT_CONFIG_KEY_1=core.filemode GIT_CONFIG_VALUE_1=false
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# --- 3. Fetch / sync the PDFium tree ----------------------------------------
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mkdir -p "${CHECKOUT_DIR}"
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cd "${CHECKOUT_DIR}"
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if [[ ! -d "${CHECKOUT_DIR}/pdfium" ]]; then
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echo ">> gclient config (unmanaged)"
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gclient config --unmanaged "${PDFIUM_REPO}"
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fi
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echo ">> gclient sync (pulls several GB; slow)"
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gclient sync --no-history --shallow --reset --force
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# --- 4. Pin to the exact commit + sync its DEPS -----------------------------
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cd "${CHECKOUT_DIR}/pdfium"
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git fetch origin "${PDFIUM_COMMIT}"
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git checkout --detach "${PDFIUM_COMMIT}"
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gclient sync --no-history --shallow --reset --force -D
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# --- 5. GN args: static, standalone, monolithic, embed-friendly -------------
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mkdir -p out/Release
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cp "${SCRIPT_DIR}/args.gn" out/Release/args.gn
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# --- 6. Generate + build ----------------------------------------------------
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echo ">> gn gen + ninja"
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gn gen out/Release
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ninja -C out/Release pdfium
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# --- 7. Install: public headers + static lib --------------------------------
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echo ">> Installing into ${INSTALL_DIR}"
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rm -rf "${INSTALL_DIR}"
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mkdir -p "${INSTALL_DIR}/include" "${INSTALL_DIR}/lib"
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cp public/*.h "${INSTALL_DIR}/include/"
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cp -r public/cpp "${INSTALL_DIR}/include/" 2>/dev/null || true
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if [[ -f out/Release/obj/libpdfium.a ]]; then
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cp out/Release/obj/libpdfium.a "${INSTALL_DIR}/lib/"
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else
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# Fallback: some configurations emit the lib at the out-dir root.
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cp out/Release/libpdfium.a "${INSTALL_DIR}/lib/"
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fi
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echo ">> Done. Configure the engine with -DPDFENGINE_WITH_PDFIUM=ON"
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