[geos-devel] 3.9.0beta + GEOSwift + Linux

[Paul Ramsey]

> On Nov 30, 2020, at 7:15 PM, Andrew Hershberger <andrew.d.hershberger at gmail.com> wrote:
> 
> Found another issue with the beta when testing GEOSwift on Linux (specifically, compiling in a Docker container using the Swift Docker image). Here's what I'm doing:
> 
> $ sudo docker run -it --rm swift /bin/bash
> # cd home
> # git clone https://github.com/GEOSwift/GEOSwift.git
> # cd GEOSwift
> # git checkout geos-3.9.0-testing
> # swift test --enable-test-discovery -v
> 
> Among other things, this yields the following line for LineLimiter.cpp:
> 
> /usr/bin/clang -target x86_64-unknown-linux-gnu -fPIC -g -O0 -DSWIFT_PACKAGE=1 -DDEBUG=1 -fblocks -fmodules -fmodule-name=geos -I /home/GEOSwift/.build/checkouts/geos/Sources/geos/public -fmodules-cache-path=/home/GEOSwift/.build/x86_64-unknown-linux-gnu/debug/ModuleCache -DUSE_UNSTABLE_GEOS_CPP_API -I/home/GEOSwift/.build/checkouts/geos/Sources/geos/include -MD -MT dependencies -MF /home/GEOSwift/.build/x86_64-unknown-linux-gnu/debug/geos.build/src/operation/overlayng/LineLimiter.cpp.d -std=c++11 -c /home/GEOSwift/.build/checkouts/geos/Sources/geos/src/operation/overlayng/LineLimiter.cpp -o /home/GEOSwift/.build/x86_64-unknown-linux-gnu/debug/geos.build/src/operation/overlayng/LineLimiter.cpp.o
> 
> And this corresponding error:
> 
> /home/GEOSwift/.build/checkouts/geos/Sources/geos/src/operation/overlayng/LineLimiter.cpp:121:24: error: no member named 'unique' in namespace 'std'
>     ptList->erase(std::unique(ptList->begin(), ptList->end()), ptList->end());

Add #include <algorithm>
to LineLimiter.cpp see if that helps?

Not sure why only your version would have this problem. Maybe it's in different headers sometimes?


>                   ~~~~~^
> 
> Here's some clang version info:
> 
> clang version 10.0.0 (git at github.com:apple/llvm-project.git 3093af41dd65ad466dcd5603e9289244edfee4f5)
> Target: x86_64-unknown-linux-gnu
> Thread model: posix
> InstalledDir: /usr/bin
> 
> Any idea what might be going on here?
> 
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