Arch Linux

Description:

For building mapnik you need scons as build dependency. Recently (2 weeks ago) scons was updated in ArchLinux from v3.1.2 to v4.1.0 (see https://github.com/archlinux/svntogit-packages/commit/ff16b668923695e2ffbf412831474156eff91377#diff-3e341d2d9c67be01819b25b25d5e53ea3cdf3a38d28846cda85a195eb9b7203a ). This update has breaking changes. Hence, mapnik does not build anymore with current PKGBUILD. It seems the issue has as well been reported upstream (see https://github.com/mapnik/mapnik/issues/4213). A workaround for me seems to be to use the existing bundled scons package (v3.0.1 https://github.com/mapnik/mapnik/tree/v3.1.x/scons) in the mapnik source itself (as it is v3.X and not v4.X like in ArchLinux) like the following:

$ diff -u PKGBUILD.old PKGBUILD
--- PKGBUILD.old 2021-07-27 16:45:18.556967067 +0200
+++ PKGBUILD 2021-07-27 16:45:32.060016933 +0200
@@ -17,8 +17,9 @@
sha256sums=('43d76182d2a975212b4ad11524c74e577576c11039fdab5286b828397d8e6261')

build() {
+ scons="python2 ${srcdir}/mapnik-v$pkgver/scons/scons.py"
cd "${srcdir}"/$pkgname-v$pkgver
- scons configure FAST=True \
+ $scons configure FAST=True \
PREFIX="/usr" \
INPUT_PLUGINS=all \
XMLPARSER=libxml2 \
@@ -26,10 +27,11 @@
CUSTOM_CXXFLAGS="$CXXFLAGS" \
CUSTOM_LDFLAGS="$LDFLAGS" \
CUSTOM_DEFINES="-DACCEPT_USE_OF_DEPRECATED_PROJ_API_H=1 -DMAPNIK_USE_PROJ4=1"
- scons $(expr "$MAKEFLAGS" : '.*\(\-j[0-9]\+\)')
+ $scons $(expr "$MAKEFLAGS" : '.*\(\-j[0-9]\+\)')
}

package(){
+ scons="python2 ${srcdir}/mapnik-v$pkgver/scons/scons.py"
cd "${srcdir}"/$pkgname-v$pkgver
- scons install
+ $scons install
}


Additional info:
* package version(s): mapnik 3.1.0-5, scons 4.1.0-2
* link to upstream bug report: https://github.com/mapnik/mapnik/issues/4213


Steps to reproduce: Build mapnik manually

$ wget https://github.com/archlinux/svntogit-community/blob/packages/mapnik/trunk/PKGBUILD
$ makepkg
==> Making package: mapnik 3.1.0-5 (2021-07-27T16:09:12 CEST)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving sources...
-> Found mapnik-v3.1.0.tar.bz2
==> Validating source files with sha256sums...
mapnik-v3.1.0.tar.bz2 ... Passed
==> Extracting sources...
-> Extracting mapnik-v3.1.0.tar.bz2 with bsdtar
==> Removing existing $pkgdir/ directory...
==> Starting build()...
scons: Reading SConscript files ...
AttributeError: 'SConsEnvironment' object has no attribute 'SourceCode':
File "mapnik-arch/src/mapnik-v3.1.0/SConstruct", line 137:
init_environment(env)
File "mapnik-arch/src/mapnik-v3.1.0/SConstruct", line 129:
env.SourceCode(".", None)