chore: update other libraries

Signed-off-by: Luca Foppiano <luca@foppiano.org>

Author: lfoppiano

.github/workflows/ci-build-libs.yml

@@ -13,10 +13,15 @@ on:
       - master
 
 env:
-  LIBXML2_VERSION: 2.13.6
-  FREETYPE2_VERSION: 2.13.3
+  LIBXML2_VERSION: 2.15.2
+  FREETYPE2_VERSION: 2.14.2
   LIBPNG16_VERSION: 1.6.56
   ZLIB_VERSION: 1.3.2
+  # ICU_VERSION holds the full git tag (not just a semver), because the
+  # upstream tag naming convention uses a dash for 76.x/77.x (release-76-1)
+  # but a dot for 78.x (release-78.3). Treating it as an opaque tag string
+  # keeps this robust across the naming-convention change.
+  ICU_VERSION: release-78.3
 
 jobs:
   build-libxml2:
@@ -291,7 +296,7 @@ jobs:
       - name: Download source
         run: |
           cd libs/icu
-          wget -O source.tar.gz https://github.com/unicode-org/icu/archive/refs/tags/release-76-1.tar.gz
+          wget -O source.tar.gz https://github.com/unicode-org/icu/archive/refs/tags/${{ env.ICU_VERSION }}.tar.gz
           tar -zxf source.tar.gz
           mv icu-release-* src
 

Dependencies_INSTALL.md

@@ -15,9 +15,9 @@ each [build](https://github.com/kermitt2/pdfalto/actions) under [Manual build st
 
 - LibPNG: 1.6.56
 - zLib: 1.3.2
-- libxml2: 2.13.6
-- freetype: 2.13.3
-- ICU: 76-1
+- libxml2: 2.15.2
+- freetype: 2.14.2
+- ICU: 78.3
 
 ## LibPNG & zLib
 
@@ -56,7 +56,7 @@ LibPNG and zLib sources are downloaded and built as part of the dependency build
 
 ## libxml2
 
-1. Download the source from https://gitlab.gnome.org/GNOME/libxml2/-/archive/v2.13.6/libxml2-v2.13.6.tar.gz and unpack it.
+1. Download the source from https://gitlab.gnome.org/GNOME/libxml2/-/archive/v2.15.2/libxml2-v2.15.2.tar.gz and unpack it.
 
 2. Access the directory and build:
 
@@ -72,7 +72,7 @@ LibPNG and zLib sources are downloaded and built as part of the dependency build
 
 ## Freetype
 
-1. Download the source from https://sourceforge.net/projects/freetype/files/freetype2/2.13.3/ and unpack it.
+1. Download the source from https://sourceforge.net/projects/freetype/files/freetype2/2.14.2/ and unpack it.
 2. Access the directory then build:
    ```shell
    mkdir -p build/output
@@ -93,8 +93,8 @@ LibPNG and zLib sources are downloaded and built as part of the dependency build
 
 ## ICU
 
-1. Download the sources (tested with version 76-1)
-   from https://github.com/unicode-org/icu/archive/refs/tags/release-76-1.tar.gz
+1. Download the sources (tested with version 78.3)
+   from https://github.com/unicode-org/icu/archive/refs/tags/release-78.3.tar.gz
 
 2. Decompress the archive file. For example,
    ```shell

install_deps.sh

@@ -17,16 +17,19 @@ fi
 
 DEP_INSTALL_DIR=install
 
-LIBXML2_VERSION=2.13.6
-FREETYPE2_VERSION=2.13.3
+LIBXML2_VERSION=2.15.2
+FREETYPE2_VERSION=2.14.2
 LIBPNG16_VERSION=1.6.56
 ZLIB_VERSION=1.3.2
+# ICU_VERSION is the full git tag (not just a semver) — upstream uses a dash
+# for 76.x/77.x (release-76-1) but a dot for 78.x (release-78.3).
+ICU_VERSION=release-78.3
 
 LIBXML_URI="https://gitlab.gnome.org/GNOME/libxml2/-/archive/v${LIBXML2_VERSION}/libxml2-v${LIBXML2_VERSION}.tar.gz"
 FREETYPE_URI="https://sourceforge.net/projects/freetype/files/freetype2/${FREETYPE2_VERSION}/freetype-${FREETYPE2_VERSION}.tar.gz/download"
 LIBPNG_URI="https://sourceforge.net/projects/libpng/files/libpng16/${LIBPNG16_VERSION}/libpng-${LIBPNG16_VERSION}.tar.gz/download"
 ZLIB_URI="https://zlib.net/zlib-${ZLIB_VERSION}.tar.gz"
-ICU_URI="https://github.com/unicode-org/icu/archive/refs/tags/release-76-1.tar.gz"
+ICU_URI="https://github.com/unicode-org/icu/archive/refs/tags/${ICU_VERSION}.tar.gz"
 
 ICU_FILENAME=$(basename "${ICU_URI}")
 ICU_DIR_NAME=icu