Could NOT find Threads (missing: Threads_FOUND)

[skhaz]

I am trying to compile ECT on arm64 using Docker

I have installed all dependencies (I guess, because it works on x86_64)

RUN apt-get update && apt-get install -y autoconf build-essential cmake pkg-config nasm wget

However, when I run cmake ., it can not found libpthread

Full output=> ERROR [builder 10/13] RUN cd src && cmake . && make -j$(nproc)                                                     0.7s
------
 > [builder 10/13] RUN cd src && cmake . && make -j$(nproc):
#0 0.397 -- The CXX compiler identification is GNU 12.2.0
#0 0.487 -- The C compiler identification is GNU 12.2.0
#0 0.496 -- Detecting CXX compiler ABI info
#0 0.569 -- Detecting CXX compiler ABI info - done
#0 0.574 -- Check for working CXX compiler: /usr/bin/c++ - skipped
#0 0.574 -- Detecting CXX compile features
#0 0.575 -- Detecting CXX compile features - done
#0 0.577 -- Detecting C compiler ABI info
#0 0.631 -- Detecting C compiler ABI info - done
#0 0.637 -- Check for working C compiler: /usr/bin/cc - skipped
#0 0.637 -- Detecting C compile features
#0 0.637 -- Detecting C compile features - done
#0 0.644 -- Performing Test CMAKE_HAVE_LIBC_PTHREAD
#0 0.664 -- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
#0 0.664 -- Looking for pthread_create in pthreads
#0 0.683 -- Looking for pthread_create in pthreads - not found
#0 0.683 -- Looking for pthread_create in pthread
#0 0.702 -- Looking for pthread_create in pthread - not found
#0 0.702 -- Check if compiler accepts -pthread
#0 0.722 -- Check if compiler accepts -pthread - no
#0 0.723 CMake Error at /usr/share/cmake-3.25/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
#0 0.723   Could NOT find Threads (missing: Threads_FOUND)
#0 0.723 Call Stack (most recent call first):
#0 0.723   /usr/share/cmake-3.25/Modules/FindPackageHandleStandardArgs.cmake:600 (_FPHSA_FAILURE_MESSAGE)
#0 0.723   /usr/share/cmake-3.25/Modules/FindThreads.cmake:228 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
#0 0.723   zopfli/CMakeLists.txt:35 (find_package)
#0 0.723 
#0 0.723 
#0 0.723 -- Configuring incomplete, errors occurred!
#0 0.723 See also "/opt/ect/src/CMakeFiles/CMakeOutput.log".
#0 0.723 See also "/opt/ect/src/CMakeFiles/CMakeError.log".

Any ideas?

Full Dockerfile

FROM debian:bookworm AS builder
RUN apt-get update && apt-get install -y autoconf build-essential cmake libstdc++-12-dev pkg-config nasm wget

ARG ECT_HASH=8b2511e2ceecd633af00646ec9fe16c90528cee9
WORKDIR /opt/ect
RUN wget -qO- github.com/fhanau/Efficient-Compression-Tool/archive/"$ECT_HASH".tar.gz | tar zx --strip-components=1
RUN wget -qO- github.com/glennrp/libpng/archive/07b8803110da160b158ebfef872627da6c85cbdf.tar.gz | tar zx --strip-components=1 -C src/libpng
RUN wget -qO- github.com/mozilla/mozjpeg/archive/cf6facaedb8f8ded44e6c41b0db8a721d329ff22.tar.gz | tar zx --strip-components=1 -C src/mozjpeg
RUN cd src && cmake . && make -j$(nproc)

docker buildx build --platform=linux/arm64 --tag ect

[fhanau]

Hello Rodrigo,
it looks like this may be a cmake related issue. First, make sure that pthread is installed. Based on what I have seen on other projects, adding set(THREADS_PREFER_PTHREAD_FLAG ON) before find_package(Threads REQUIRED) in src/zopfli/CMakeLists.txt might do the trick. Otherwise, you can try the suggestions in alicevision/geogram/issues/2. Let me know if these suggestions get it to work!