diff --git a/.github/workflows/toolchain.yml b/.github/workflows/toolchain.yml
index 2151617..7c2075a 100644
--- a/.github/workflows/toolchain.yml
+++ b/.github/workflows/toolchain.yml
@@ -4,6 +4,10 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+defaults:
+  run:
+    shell: bash
+
 on: [push, pull_request]
 
 jobs:
@@ -12,35 +16,96 @@ jobs:
 
     runs-on: ubuntu-latest
     container:
-      image: koreader/kobase:0.4.0-22.04
+      image: koreader/kobase:2.0.0-22.04
 
     strategy:
       fail-fast: false
       matrix:
-        tc: [kindle, kindle5, kindlepw2, kindlehf, kobo, kobov4, kobov5, nickel, remarkable, remarkable-aarch64, cervantes, pocketbook, bookeen]
+        tc: [
+          bookeen,
+          cervantes,
+          kindle,
+          kindle5,
+          kindlehf,
+          kindlepw2,
+          kobo,
+          kobov4,
+          kobov5,
+          nickel,
+          pocketbook,
+          pocketbookhf,
+          remarkable,
+          remarkable-aarch64,
+        ]
+
+    env:
+      CCACHE_DIR: "${{ format('{0}/ccache', github.workspace) }}"
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           fetch-depth: 1
 
       - name: Install deps
         run: |
+          set -x
           sudo apt-get update
           sudo apt-get install --no-install-recommends -y bison flex gawk gperf help2man libncurses-dev libtool-bin rsync texinfo
 
+      - name: Restore build cache
+        id: cache-restore
+        uses: actions/cache/restore@v6
+        with:
+          path: &CACHE_PATHS |
+            ${{ env.CCACHE_DIR }}
+          key: ${{ matrix.tc }}-cache-${{ github.sha }}-${{ github.run_number }}
+          restore-keys: |
+            ${{ matrix.tc }}-cache-${{ github.sha }}-
+            ${{ matrix.tc }}-cache-
+
+      - name: Setup build cache
+        if: steps.build-restore.outputs.cache-hit != 'true'
+        run: |
+          set -x
+          ccache --version
+          ccache --zero-stats
+          ccache --max-size=1G
+          ccache --show-config
+          ccache_bindir='/usr/local/ccache'
+          sudo mkdir "${ccache_bindir}"
+          for f in /usr/bin/{c++,cc,g++,gcc,x86_64-*-gcc,x86_64-*-g++}; do
+            [[ -x "$f" ]] || exit $?
+            sudo ln --symbolic --no-dereference --force --relative /usr/local/bin/ccache "$ccache_bindir/${f##*/}"
+          done
+          printf '%s\n' "${ccache_bindir}" >>"${GITHUB_PATH}"
+
       - name: Generate toolchain
         run: ./gen-tc.sh ${{ matrix.tc }}
 
+      - name: Clean build cache
+        if: always()
+        run: |
+          set -x
+          ccache --cleanup >/dev/null
+          ccache --show-stats --verbose
+
+      - name: Save build cache
+        uses: actions/cache/save@v6
+        if: always() && steps.cache-restore.outputs.cache-hit != 'true'
+        with:
+          path: *CACHE_PATHS
+          key: ${{ steps.cache-restore.outputs.cache-primary-key }}
+
       - name: Tar artifacts
-        run: tar -C ~ -czf ${{ matrix.tc }}.tar.gz x-tools
+        run: tar -C ~ -caf ${{ matrix.tc }}.tar.zst x-tools
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
+          archive: false
           name: ${{ matrix.tc }}
-          path: ${{ matrix.tc }}.tar.gz
+          path: ${{ matrix.tc }}.tar.zst
 
   release:
 
@@ -54,15 +119,16 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           fetch-depth: 1
 
       - name: Download artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v8
         with:
           merge-multiple: true
           path: artifacts
+          skip-decompress: true
 
       - name: Create release
         env:
diff --git a/gen-tc.sh b/gen-tc.sh
index 9d75fe7..3a43ecd 100755
--- a/gen-tc.sh
+++ b/gen-tc.sh
@@ -17,7 +17,8 @@
 
 CUR_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 BUILD_ROOT="${CUR_DIR}/build"
-DEFAULT_GIT_REPO="https://github.com/crosstool-ng/crosstool-ng.git"
+DEFAULT_GIT_REPO='https://github.com/benoit-pierre/crosstool-ng.git'
+DEFAULT_GIT_REV='34844bc8e985ad1ba26b072a5b58264967072e19'
 
 Build_CT-NG() {
 	echo "[*] Building CrossTool-NG . . ."
@@ -103,6 +104,7 @@ Supported platforms:
 	remarkable-aarch64
 	cervantes
 	pocketbook
+	pocketbookhf
 	bookeen
 "
 
@@ -119,44 +121,44 @@ case $1 in
 		;;
 	kobov5)
 		Build_CT-NG \
-			https://github.com/NiLuJe/crosstool-ng.git \
-			62fb5946719c24dd38c1f41a35a7f8bdf35462d6 \
+			"$DEFAULT_GIT_REPO" \
+			"$DEFAULT_GIT_REV" \
 			"arm-${1}-linux-gnueabihf"
 		;;
 	kobov4)
 		Build_CT-NG \
-			https://github.com/NiLuJe/crosstool-ng.git \
-			62fb5946719c24dd38c1f41a35a7f8bdf35462d6 \
+			"$DEFAULT_GIT_REPO" \
+			"$DEFAULT_GIT_REV" \
 			"arm-${1}-linux-gnueabihf"
 		;;
 	kobo)
 		Build_CT-NG \
-			https://github.com/NiLuJe/crosstool-ng.git \
-			62fb5946719c24dd38c1f41a35a7f8bdf35462d6 \
+			"$DEFAULT_GIT_REPO" \
+			"$DEFAULT_GIT_REV" \
 			"arm-${1}-linux-gnueabihf"
 		;;
 	nickel)
 		Build_CT-NG \
-			https://github.com/NiLuJe/crosstool-ng.git \
-			62fb5946719c24dd38c1f41a35a7f8bdf35462d6 \
+			"$DEFAULT_GIT_REPO" \
+			"$DEFAULT_GIT_REV" \
 			"arm-${1}-linux-gnueabihf"
 		;;
 	kindlehf)
 		Build_CT-NG \
-			https://github.com/NiLuJe/crosstool-ng.git \
-			62fb5946719c24dd38c1f41a35a7f8bdf35462d6 \
+			"$DEFAULT_GIT_REPO" \
+			"$DEFAULT_GIT_REV" \
 			"arm-${1}-linux-gnueabihf"
 		;;
 	kindlepw2)
 		Build_CT-NG \
-			https://github.com/NiLuJe/crosstool-ng.git \
-			62fb5946719c24dd38c1f41a35a7f8bdf35462d6 \
+			"$DEFAULT_GIT_REPO" \
+			"$DEFAULT_GIT_REV" \
 			"arm-${1}-linux-gnueabi"
 		;;
 	kindle5)
 		Build_CT-NG \
-			https://github.com/NiLuJe/crosstool-ng.git \
-			62fb5946719c24dd38c1f41a35a7f8bdf35462d6 \
+			"$DEFAULT_GIT_REPO" \
+			"$DEFAULT_GIT_REV" \
 			"arm-${1}-linux-gnueabi"
 		;;
 	kindle)
@@ -164,81 +166,48 @@ case $1 in
 		export glibcxx_cv_utimensat=no
 
 		Build_CT-NG \
-			https://github.com/NiLuJe/crosstool-ng.git \
-			62fb5946719c24dd38c1f41a35a7f8bdf35462d6 \
+			"$DEFAULT_GIT_REPO" \
+			"$DEFAULT_GIT_REV" \
 			"arm-${1}-linux-gnueabi"
 		unset glibcxx_cv_utimensat
 		;;
 	remarkable)
 		Build_CT-NG \
-			https://github.com/NiLuJe/crosstool-ng.git \
-			62fb5946719c24dd38c1f41a35a7f8bdf35462d6 \
+			"$DEFAULT_GIT_REPO" \
+			"$DEFAULT_GIT_REV" \
 			"arm-${1}-linux-gnueabihf"
 		;;
 	remarkable-aarch64)
 		Build_CT-NG \
-			https://github.com/NiLuJe/crosstool-ng.git \
-			9d4156d109d22e9b0e8958e56bbbd947cd7ce065 \
+			"$DEFAULT_GIT_REPO" \
+			"$DEFAULT_GIT_REV" \
 			"aarch64-remarkable-linux-gnu"
 		;;
 	cervantes)
 		Build_CT-NG \
-			https://github.com/NiLuJe/crosstool-ng.git \
-			62fb5946719c24dd38c1f41a35a7f8bdf35462d6 \
+			"$DEFAULT_GIT_REPO" \
+			"$DEFAULT_GIT_REV" \
 			"arm-${1}-linux-gnueabi"
 		;;
 	pocketbook)
 		# NOTE: Prevent libstdc++ from pulling in utimensat@GLIBC_2.6
 		export glibcxx_cv_utimensat=no
-
 		Build_CT-NG \
-			https://github.com/NiLuJe/crosstool-ng.git \
-			62fb5946719c24dd38c1f41a35a7f8bdf35462d6 \
+			"$DEFAULT_GIT_REPO" \
+			"$DEFAULT_GIT_REV" \
 			"arm-${1}-linux-gnueabi"
-		# Then, pull InkView from the (old) official SDK...
-		# NOTE: See also https://github.com/pocketbook/SDK_6.3.0/tree/5.19/SDK-iMX6/usr/arm-obreey-linux-gnueabi/sysroot/usr/local for newer FWs...
-		chmod a+w "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/lib"
-		wget https://github.com/blchinezu/pocketbook-sdk/raw/5.17/SDK_481/arm-obreey-linux-gnueabi/sysroot/usr/local/lib/libinkview.481.5.17.so \
-			-O "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/lib/libinkview.so"
-		chmod a-w "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/lib/libinkview.so"
-		wget https://github.com/blchinezu/pocketbook-sdk/raw/5.17/SDK_481/arm-obreey-linux-gnueabi/sysroot/usr/local/lib/libhwconfig.so \
-			-O "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/lib/libhwconfig.so"
-		chmod a-w "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/lib/libhwconfig.so"
-		wget https://github.com/blchinezu/pocketbook-sdk/raw/5.17/FRSCSDK/arm-none-linux-gnueabi/sysroot/usr/lib/libbookstate.so \
-			-O "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/lib/libbookstate.so"
-		chmod a-w "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/lib/libbookstate.so"
-		chmod a-w "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/lib"
-		chmod a+w "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/include"
-		wget https://github.com/blchinezu/pocketbook-sdk/raw/5.17/SDK_481/arm-obreey-linux-gnueabi/sysroot/usr/local/include/inkview.h \
-			-O "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/include/inkview.h"
-		# Don't pull 3rd-party includes...
-		sed -e '/^#include <zlib.h>/i \/*' -i "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/include/inkview.h"
-		sed -e '/^#include FT_OUTLINE_H/a *\/' -i "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/include/inkview.h"
-		# NOTE: This also comments <pthread.h>, which the header itself doesn't need anyway...
-		chmod a-w "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/include/inkview.h"
-		wget https://github.com/blchinezu/pocketbook-sdk/raw/5.17/SDK_481/arm-obreey-linux-gnueabi/sysroot/usr/local/include/inkplatform.h \
-			-O "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/include/inkplatform.h"
-		chmod a-w "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/include/inkplatform.h"
-		wget https://github.com/blchinezu/pocketbook-sdk/raw/5.17/SDK_481/arm-obreey-linux-gnueabi/sysroot/usr/local/include/inklog.h \
-			-O "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/include/inklog.h"
-		chmod a-w "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/include/inklog.h"
-		wget https://github.com/blchinezu/pocketbook-sdk/raw/5.17/SDK_481/arm-obreey-linux-gnueabi/sysroot/usr/local/include/inkinternal.h \
-			-O "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/include/inkinternal.h"
-		chmod a-w "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/include/inkinternal.h"
-		wget https://github.com/blchinezu/pocketbook-sdk/raw/5.17/SDK_481/arm-obreey-linux-gnueabi/sysroot/usr/local/include/hwconfig.h \
-			-O "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/include/hwconfig.h"
-		chmod a-w "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/include/hwconfig.h"
-		wget https://github.com/blchinezu/pocketbook-sdk/raw/5.17/FRSCSDK/arm-none-linux-gnueabi/sysroot/usr/include/bookstate.h \
-			-O "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/include/bookstate.h"
-		chmod a-w "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/include/bookstate.h"
-		chmod a-w "${HOME}/x-tools/arm-${1}-linux-gnueabi/arm-${1}-linux-gnueabi/sysroot/usr/include"
-
 		unset glibcxx_cv_utimensat
 		;;
+	pocketbookhf)
+		Build_CT-NG \
+			"$DEFAULT_GIT_REPO" \
+			"$DEFAULT_GIT_REV" \
+			"arm-${1}-linux-gnueabihf"
+		;;
 	bookeen)
 		Build_CT-NG \
-			https://github.com/NiLuJe/crosstool-ng.git \
-			62fb5946719c24dd38c1f41a35a7f8bdf35462d6 \
+			"$DEFAULT_GIT_REPO" \
+			"$DEFAULT_GIT_REV" \
 			"arm-${1}-linux-gnueabi"
 		;;
 	*)