add libvips on heroku22

Author: jcupitt

libvips-heroku22/Dockerfile

@@ -0,0 +1,119 @@
+FROM heroku/heroku:22
+
+# generic build tools  ... libgsf needs intltool
+RUN apt-get update \
+	&& apt-get install -y \
+		build-essential \
+		wget \
+		python3-pip \
+		ninja-build \
+		pkg-config 
+
+RUN pip3 install meson
+
+# use the heroku platform libraries when we can
+#
+# see https://devcenter.heroku.com/articles/stack-packages
+#
+# this should only pull in header files and should not create any extra run
+# time dependencies
+RUN apt-get install -y \
+	glib-2.0-dev \
+	libexpat1-dev \
+	libpango1.0-dev \
+	librsvg2-dev \
+	libpng-dev \
+	libwebp-dev \
+	libjpeg-turbo8-dev \
+	libtiff5-dev \
+	libexif-dev \
+	liblcms2-dev \
+	libgsf-1-dev \
+	liborc-0.4-dev \
+	libimagequant-dev \
+	libcgif-dev \
+	libheif-dev \
+	libfftw3-dev 
+
+WORKDIR /usr/local/src
+
+# build to this prefix 
+#  - heroku has /usr/local/lib on the default ld.so.conf search path, so 
+#    this is convenient
+#  - heroku has a basic dir structure in /usr/local, but no files
+ARG PREFIX=/usr/local
+ENV PKG_CONFIG_PATH=$PREFIX/lib/pkgconfig
+
+# last updated 16sep23
+ARG PDFIUM_VERSION=6002
+ARG PDFIUM_URL=https://github.com/bblanchon/pdfium-binaries/releases/download/chromium
+
+RUN wget $PDFIUM_URL/$PDFIUM_VERSION/pdfium-linux-x64.tgz \
+  && mkdir pdfium \
+  && cd pdfium \
+  && tar xf ../pdfium-linux-x64.tgz \
+  && cp lib/* $PREFIX/lib \
+  && cp -r include/* $PREFIX/include
+
+# make a pdfium.pc file libvips can use
+RUN mkdir -p $PREFIX/lib/pkgconfig \
+  && cd $PREFIX/lib/pkgconfig \
+  && echo "prefix=$PREFIX" >> pdfium.pc \
+  && echo "exec_prefix=\${prefix}" >> pdfium.pc \
+  && echo "libdir=\${exec_prefix}/lib" >> pdfium.pc \
+  && echo "includedir=\${prefix}/include" >> pdfium.pc \
+  && echo "Name: pdfium" >> pdfium.pc \
+  && echo "Description: pdfium" >> pdfium.pc \
+  && echo "Version: $PDFIUM_VERSION" >> pdfium.pc \
+  && echo "Requires: " >> pdfium.pc \
+  && echo "Libs: -L\${libdir} -lpdfium" >> pdfium.pc \
+  && echo "Cflags: -I\${includedir}" >> pdfium.pc
+
+# use libspng for PNG load and save
+ARG SPNG_VERSION=0.7.4
+ARG SPNG_URL=https://github.com/randy408/libspng/archive/refs/tags
+
+RUN wget ${SPNG_URL}/v${SPNG_VERSION}.tar.gz \
+	&& tar xf v${SPNG_VERSION}.tar.gz \
+	&& cd libspng-${SPNG_VERSION} \
+	&& meson build --prefix=${PREFIX} --libdir=lib \
+	&& cd build \
+	&& ninja \
+	&& ninja install
+
+ARG VIPS_VERSION=8.14.4
+ARG VIPS_URL=https://github.com/libvips/libvips/releases/download
+
+RUN wget ${VIPS_URL}/v${VIPS_VERSION}/vips-${VIPS_VERSION}.tar.xz \
+	&& tar xf vips-${VIPS_VERSION}.tar.xz \
+	&& cd vips-${VIPS_VERSION} \
+	&& meson setup build \
+		--prefix=$PREFIX \
+		--libdir=lib \
+		--buildtype=release \
+		-Dradiance=false \
+		-Danalyze=false \
+		-Dintrospection=false \
+	&& cd build \
+	&& meson compile \
+	&& meson install
+
+# clean and package
+RUN cd $PREFIX \
+	&& cp -r lib libvips-heroku22 \
+	&& cd libvips-heroku22 \
+	&& strip lib*.so* \
+	&& strip vips-modules-8.14/*.so \
+	&& rm -rf pkgconfig \
+	&& rm -rf python* \
+	&& tar cfz ../libvips-heroku22.tar.gz * \
+	&& echo built libvips-heroku22.tar.gz \
+ 	&& ls -l $PREFIX/libvips-heroku22.tar.gz
+
+# install and test ruby-vips to confirm we can pick up the libraries
+# correctly 
+# we need ruby-dev to install ruby-ffi
+ENV LD_LIBRAY_PATH=$PREFIX/lib
+RUN apt-get install -y ruby-dev
+RUN gem install ruby-vips
+RUN ruby -e 'require "vips"; puts "ruby-vips: libvips #{Vips::LIBRARY_VERSION}"'

libvips-heroku22/README.md

@@ -0,0 +1,18 @@
+# libvips on heroku 22
+
+This uses platform libraries when we can. It builds to `/usr/local/vips` in the
+container, so tar that up and send it off to s3 or whatever ready to deploy.
+
+# Rebuild the image
+
+```
+docker pull heroku/heroku:22
+docker build -t libvips-heroku22 .
+```
+
+# TODO
+
+- check the size of the binary tarball, and the size on disc
+- strip a bit more?
+- remove C++ libs and headers?
+- pull the packaged tarball back out of the container