From f621e0bd5cfecdbe26293d5a7a54a5752ba6e420 Mon Sep 17 00:00:00 2001
From: lrnselfreliance <33263708+lrnselfreliance@users.noreply.github.com>
Date: Wed, 15 Jul 2026 15:48:25 -0600
Subject: [PATCH] Bake tippecanoe into the Raspberry Pi image (#537)

The Debian Live image builds tippecanoe at image time, but pi-gen did not,
so a fresh Pi compiled it on first boot/upgrade via install_protomaps.sh --
a multi-minute, CPU-heavy C++ build on the weakest hardware WROLPi targets.
This is the same "Debian bakes it, pi-gen doesn't" gap recently fixed for
the React app build.

Build tippecanoe 2.79.0 in the stage2 chroot, mirroring the Debian hook
(SHA-pinned source tarball, which is arch-independent). Add the two missing
build deps (libsqlite3-dev, zlib1g-dev) to the package list; build-essential
was already present.

With tippecanoe present at the pinned version, install_protomaps.sh's version
guard skips the build on first boot and on upgrades, so the on-device compile
only recurs when the pinned version actually bumps.

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
---
 pi-gen/stage2/04-wrolpi/01-packages-nr   |  2 ++
 pi-gen/stage2/04-wrolpi/03-run-chroot.sh | 18 ++++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/pi-gen/stage2/04-wrolpi/01-packages-nr b/pi-gen/stage2/04-wrolpi/01-packages-nr
index 400fb0a6..1348c0e6 100644
--- a/pi-gen/stage2/04-wrolpi/01-packages-nr
+++ b/pi-gen/stage2/04-wrolpi/01-packages-nr
@@ -42,6 +42,7 @@ libgeos++-dev
 libgeos-dev
 libicu-dev
 libproj-dev
+libsqlite3-dev
 libssl-dev
 libtiff-dev
 libtool
@@ -73,3 +74,4 @@ vim
 vlc
 wget
 zim-tools
+zlib1g-dev
diff --git a/pi-gen/stage2/04-wrolpi/03-run-chroot.sh b/pi-gen/stage2/04-wrolpi/03-run-chroot.sh
index e19ac69c..56bfbc16 100755
--- a/pi-gen/stage2/04-wrolpi/03-run-chroot.sh
+++ b/pi-gen/stage2/04-wrolpi/03-run-chroot.sh
@@ -32,6 +32,24 @@ chmod +x /usr/local/bin/deno
 rm /tmp/deno.zip
 deno --version
 
+# Build and bake in tippecanoe (used to build map search indexes).  Without this
+# the Pi compiles it on first boot/upgrade via scripts/install_protomaps.sh -- a
+# multi-minute, CPU-heavy C++ build on weak hardware.  The Debian Live image
+# already bakes it in; this brings the Pi image to parity.  Build deps
+# (build-essential, libsqlite3-dev, zlib1g-dev) come from 01-packages-nr.  Hash
+# pinned to the source tarball (arch-independent) to detect upstream tampering.
+TIPPECANOE_VERSION="2.79.0"
+TIPPECANOE_SHA256="b0fd9df49b6efc988288ea48774822c6de19eb48428017f27ee0b3b01d44f05d"
+TIPPECANOE_BUILD_DIR=$(mktemp -d)
+curl -fsSL "https://github.com/felt/tippecanoe/archive/refs/tags/${TIPPECANOE_VERSION}.tar.gz" \
+  -o /tmp/tippecanoe.tar.gz
+echo "${TIPPECANOE_SHA256}  /tmp/tippecanoe.tar.gz" | sha256sum -c -
+tar -xz -C "${TIPPECANOE_BUILD_DIR}" --strip-components=1 -f /tmp/tippecanoe.tar.gz
+rm /tmp/tippecanoe.tar.gz
+(cd "${TIPPECANOE_BUILD_DIR}" && make -j"$(nproc)" && make install)
+rm -rf "${TIPPECANOE_BUILD_DIR}"
+tippecanoe --version
+
 # Put the latest WROLPi in /opt/wrolpi.
 git clone -b "${WROLPI_BRANCH:-release}" https://github.com/lrnselfreliance/wrolpi.git /opt/wrolpi
 # `git config --global` needs HOME, which is empty when the build runs under