PhotosFlow can't be installed by following the documentation

[afiskon]

I tried to follow https://github.com/pothosware/homebrew-pothos/wiki

However the step "Install software" fails:

$ brew install pothosflow
Updating Homebrew...
==> Installing pothosflow from pothosware/pothos
==> Installing dependencies for pothosware/pothos/pothosflow: pothos, qt5, freetype, webp, gd, python@3.8, glib, jasper, netpbm, gts and graphviz
==> Installing pothosware/pothos/pothosflow dependency: pothos
==> Downloading https://github.com/pothosware/PothosCore/archive/pothos-0.6.1.tar.gz
Already downloaded: /Users/eax/Library/Caches/Homebrew/downloads/3643acb550dd1b14ce913a36d15b92e81be83172959efb65683777b1a65f4a00--PothosCore-pothos-0.6.1.tar.gz
==> cmake .. -DPOTHOS_EXTVER=release -DPOTHOS_ROOT='/usr/local' -DENABLE_INTERNAL_POCO=OFF -DENABLE_INTERNAL_SPUCE=OFF -DENABLE_INTERNAL_
==> make install
Last 15 lines from /Users/eax/Library/Logs/Homebrew/pothos/02.make:
                   ^
/usr/local/include/Poco/Hash.h:96:20: note: candidate function
inline std::size_t hash(UInt64 n)
                   ^
[ 12%] Building CXX object lib/CMakeFiles/Pothos.dir/Object/Builtin/Compare.cpp.o
cd /tmp/pothos-20200414-9041-1e2moj2/PothosCore-pothos-0.6.1/build/lib && /usr/local/Homebrew/Library/Homebrew/shims/mac/super/clang++  -DPOCO_ENABLE_CPP11 -DPOCO_ENABLE_CPP14 -DPOCO_HAVE_IPv6 -DPOCO_NO_STAT64 -DPOCO_OS_FAMILY_UNIX -DPOTHOS_DLL_EXPORTS -DPOTHOS_LIBRARY_NAME=\"libPothos.0.6.1.dylib\" -DXML_DTD -I/tmp/pothos-20200414-9041-1e2moj2/PothosCore-pothos-0.6.1/include -I/tmp/pothos-20200414-9041-1e2moj2/PothosCore-pothos-0.6.1/lib -I/usr/local/include/muparserx -I/usr/local/include/nlohmann  -DNDEBUG -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -fPIC   -std=gnu++14 -o CMakeFiles/Pothos.dir/Object/Builtin/Compare.cpp.o -c /tmp/pothos-20200414-9041-1e2moj2/PothosCore-pothos-0.6.1/lib/Object/Builtin/Compare.cpp
[ 13%] Building CXX object lib/CMakeFiles/Pothos.dir/Object/Builtin/ConvertIntermediate.cpp.o
cd /tmp/pothos-20200414-9041-1e2moj2/PothosCore-pothos-0.6.1/build/lib && /usr/local/Homebrew/Library/Homebrew/shims/mac/super/clang++  -DPOCO_ENABLE_CPP11 -DPOCO_ENABLE_CPP14 -DPOCO_HAVE_IPv6 -DPOCO_NO_STAT64 -DPOCO_OS_FAMILY_UNIX -DPOTHOS_DLL_EXPORTS -DPOTHOS_LIBRARY_NAME=\"libPothos.0.6.1.dylib\" -DXML_DTD -I/tmp/pothos-20200414-9041-1e2moj2/PothosCore-pothos-0.6.1/include -I/tmp/pothos-20200414-9041-1e2moj2/PothosCore-pothos-0.6.1/lib -I/usr/local/include/muparserx -I/usr/local/include/nlohmann  -DNDEBUG -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -fPIC   -std=gnu++14 -o CMakeFiles/Pothos.dir/Object/Builtin/ConvertIntermediate.cpp.o -c /tmp/pothos-20200414-9041-1e2moj2/PothosCore-pothos-0.6.1/lib/Object/Builtin/ConvertIntermediate.cpp
1 error generated.
make[2]: *** [lib/CMakeFiles/Pothos.dir/Object/Compare.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
1 error generated.
make[2]: *** [lib/CMakeFiles/Pothos.dir/Object/Convert.cpp.o] Error 1
make[1]: *** [lib/CMakeFiles/Pothos.dir/all] Error 2
make: *** [all] Error 2

If reporting this issue please do so at (not Homebrew/brew or Homebrew/core):
  https://github.com/pothosware/homebrew-pothos/issues

I'm using MacOS Catalina 10.15.3 and Homebrew 2.2.13

[guruofquality]

it should be fixed upstream, build pothos with --head

[drfruct]

After building the pothos, another error occurs:

CMake Error in CMakeLists.txt:
  Cannot use features from non-enabled language C

brew install pothosflow --verbose
Updating Homebrew...
==> Auto-updated Homebrew!
Updated 1 tap (homebrew/core).
No changes to formulae.

==> Installing pothosflow from pothosware/pothos
/usr/bin/sandbox-exec -f /private/tmp/homebrew20200503-9718-uz6s25.sb nice ruby -W0 -I $LOAD_PATH -- /usr/local/Homebrew/Library/Homebrew/build.rb /usr/local/Homebrew/Library/Taps/pothosware/homebrew-pothos/pothosflow.rb --verbose
==> Downloading https://github.com/pothosware/PothosFlow/archive/pothos-flow-0.6.2.tar.gz
Already downloaded: /Users/some.user/Library/Caches/Homebrew/downloads/b008e8bd74f023a5e2e446d5ee245996f666d7a67187509081e5b998c7e1de58--PothosFlow-pothos-flow-0.6.2.tar.gz
==> Verifying b008e8bd74f023a5e2e446d5ee245996f666d7a67187509081e5b998c7e1de58--PothosFlow-pothos-flow-0.6.2.tar.gz checksum
tar xof /Users/some.user/Library/Caches/Homebrew/downloads/b008e8bd74f023a5e2e446d5ee245996f666d7a67187509081e5b998c7e1de58--PothosFlow-pothos-flow-0.6.2.tar.gz -C /private/tmp/d20200503-9719-j0s0ak
cp -pR /private/tmp/d20200503-9719-j0s0ak/PothosFlow-pothos-flow-0.6.2/. /private/tmp/pothosflow-20200503-9719-1hy2brx/PothosFlow-pothos-flow-0.6.2
chmod -Rf +w /private/tmp/d20200503-9719-j0s0ak
==> cmake .. -DBUNDLE_DESTINATION=. -DCMAKE_C_FLAGS_RELEASE=-DNDEBUG -DCMAKE_CXX_FLAGS_RELEASE=-DNDEBUG -DCMAKE_INSTALL_PREFIX=/usr/local/Cellar/pothosflow/0.6.2 -DCMAKE_BUILD_TYPE=Release -DCMAKE_FIND_FRAMEWORK=LAST -DCMAKE_VERBOSE_MAKEFILE=ON -Wno-dev -DCMAKE_OSX_SYSROOT=/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk
-- The CXX compiler identification is AppleClang 11.0.3.11030032
-- Check for working CXX compiler: /usr/local/Homebrew/Library/Homebrew/shims/mac/super/clang++
-- Check for working CXX compiler: /usr/local/Homebrew/Library/Homebrew/shims/mac/super/clang++ - works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Poco_VERSION: 1.10.1
-- Poco_INCLUDE_DIRS:
-- Poco_LIBRARIES: Poco::Foundation;Poco::Util;Poco::XML;Poco::Net
-- Module CoreEditWidgets configured with version: 0.6.2
-- Configuring done
CMake Error in CMakeLists.txt:
  Cannot use features from non-enabled language C


CMake Generate step failed.  Build files cannot be regenerated correctly.

==> Formula
Tap: pothosware/pothos
Path: /usr/local/Homebrew/Library/Taps/pothosware/homebrew-pothos/pothosflow.rb
==> Configuration
HOMEBREW_VERSION: 2.2.14
ORIGIN: https://github.com/Homebrew/brew
HEAD: e2bc0fa6879ce4c74ea2d8f8c654c9812f776b43
Last commit: 5 days ago
Core tap ORIGIN: https://github.com/Homebrew/homebrew-core
Core tap HEAD: 4acfb7dfc2ad5927dbf3e4a07671aadc132797f7
Core tap last commit: 3 minutes ago
HOMEBREW_PREFIX: /usr/local
HOMEBREW_DISPLAY: /private/tmp/com.apple.launchd.u9GcwmPN8d/org.macosforge.xquartz:0
HOMEBREW_MAKE_JOBS: 4
CPU: quad-core 64-bit kabylake
Homebrew Ruby: 2.6.3 => /usr/local/Homebrew/Library/Homebrew/vendor/portable-ruby/2.6.3/bin/ruby
Clang: 11.0 build 1103
Git: 2.20.1 => /usr/local/bin/git
Curl: 7.64.1 => /usr/bin/curl
macOS: 10.15.4-x86_64
CLT: 1103.0.32.59
Xcode: N/A
XQuartz: 2.7.11 => /opt/X11
==> ENV
HOMEBREW_CC: clang
HOMEBREW_CXX: clang++
MAKEFLAGS: -j4
CMAKE_PREFIX_PATH: /usr/local/opt/openssl@1.1:/usr/local/opt/qt:/usr/local/opt/libffi:/usr/local/opt/readline:/usr/local/opt/sqlite:/usr/local/opt/python@3.8:/usr/local/opt/icu4c:/usr/local
CMAKE_INCLUDE_PATH: /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/OpenGL.framework/Versions/Current/Headers
CMAKE_LIBRARY_PATH: /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/OpenGL.framework/Versions/Current/Libraries
CMAKE_FRAMEWORK_PATH: /usr/local/opt/qt/Frameworks:/usr/local/opt/python@3.8/Frameworks
PKG_CONFIG_PATH: /usr/local/opt/openssl@1.1/lib/pkgconfig:/usr/local/opt/muparserx/lib/pkgconfig:/usr/local/opt/pothos/lib/pkgconfig:/usr/local/opt/qt/lib/pkgconfig:/usr/local/opt/libpng/lib/pkgconfig:/usr/local/opt/freetype/lib/pkgconfig:/usr/local/opt/fontconfig/lib/pkgconfig:/usr/local/opt/jpeg/lib/pkgconfig:/usr/local/opt/libtiff/lib/pkgconfig:/usr/local/opt/webp/lib/pkgconfig:/usr/local/opt/gd/lib/pkgconfig:/usr/local/opt/libffi/lib/pkgconfig:/usr/local/opt/pcre/lib/pkgconfig:/usr/local/opt/readline/lib/pkgconfig:/usr/local/opt/sqlite/lib/pkgconfig:/usr/local/opt/xz/lib/pkgconfig:/usr/local/opt/python@3.8/lib/pkgconfig:/usr/local/opt/glib/lib/pkgconfig:/usr/local/opt/jasper/lib/pkgconfig:/usr/local/opt/netpbm/lib/pkgconfig:/usr/local/opt/gts/lib/pkgconfig:/usr/local/opt/lzo/lib/pkgconfig:/usr/local/opt/pixman/lib/pkgconfig:/usr/local/opt/cairo/lib/pkgconfig:/usr/local/opt/fribidi/lib/pkgconfig:/usr/local/opt/graphite2/lib/pkgconfig:/usr/local/opt/icu4c/lib/pkgconfig:/usr/local/opt/harfbuzz/lib/pkgconfig:/usr/local/opt/pango/lib/pkgconfig:/usr/local/opt/graphviz/lib/pkgconfig
PKG_CONFIG_LIBDIR: /usr/lib/pkgconfig:/usr/local/Homebrew/Library/Homebrew/os/mac/pkgconfig/10.15
HOMEBREW_GIT: git
HOMEBREW_SDKROOT: /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk
ACLOCAL_PATH: /usr/local/share/aclocal
PATH: /usr/local/Homebrew/Library/Homebrew/shims/mac/super:/usr/local/opt/cmake/bin:/usr/local/opt/openssl@1.1/bin:/usr/local/opt/poco/bin:/usr/local/opt/pothos/bin:/usr/local/opt/qt/bin:/usr/local/opt/libpng/bin:/usr/local/opt/freetype/bin:/usr/local/opt/fontconfig/bin:/usr/local/opt/jpeg/bin:/usr/local/opt/libtiff/bin:/usr/local/opt/webp/bin:/usr/local/opt/gd/bin:/usr/local/opt/gettext/bin:/usr/local/opt/pcre/bin:/usr/local/opt/gdbm/bin:/usr/local/opt/sqlite/bin:/usr/local/opt/xz/bin:/usr/local/opt/python@3.8/bin:/usr/local/opt/glib/bin:/usr/local/opt/jasper/bin:/usr/local/opt/netpbm/bin:/usr/local/opt/gts/bin:/usr/local/opt/libtool/bin:/usr/local/opt/cairo/bin:/usr/local/opt/fribidi/bin:/usr/local/opt/graphite2/bin:/usr/local/opt/icu4c/bin:/usr/local/opt/harfbuzz/bin:/usr/local/opt/pango/bin:/usr/local/opt/graphviz/bin:/usr/bin:/bin:/usr/sbin:/sbin

Error: pothosware/pothos/pothosflow 0.6.2 did not build
Logs:
     /Users/some.user/Library/Logs/Homebrew/pothosflow/00.options.out
     /Users/some.user/Library/Logs/Homebrew/pothosflow/01.cmake.cc
     /Users/some.user/Library/Logs/Homebrew/pothosflow/01.cmake
If reporting this issue please do so at (not Homebrew/brew or Homebrew/core):
  https://github.com/pothosware/homebrew-pothos/issues

These open issues may also help:
PothosFlow:  dyld: lazy symbol binding failed: Symbol not found:  https://github.com/pothosware/homebrew-pothos/issues/35

[guruofquality]

This could be a work around, there are no C sources in the project, so im not sure what the cause is. Could be a cmake update and some check is more strict.

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 26fb932..a34ac3c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@
 # Project setup
 ########################################################################
 cmake_minimum_required(VERSION 2.8.9)
-project(PothosFlow CXX)
+project(PothosFlow CXX C)
 
 if(${CMAKE_PROJECT_NAME} STREQUAL ${PROJECT_NAME})
     find_package(Pothos "0.6.0" CONFIG REQUIRED)

[guruofquality]

build all of the GUI toolkits with --head, the newer QT5 is somehow requiring C lang to be enabled. I dont know why

[drfruct]

I tried to compile other pothos projects, all except pothoscomms gave the same error.

The pothoscomms CMakeLists.txt contains project(PothosComms CXX C).
Not all of them depend on QT5, but almost all depend on poco

Work around is the same, add C to project.

[guruofquality]

Its poco, the cmake config file uses something from C and doesnt enable the language. I will add something common to PothosCore for this

[drfruct]

After your last commit to PothosCore still no luck to compile pothosblocks and other pothos tools.
My actions:

brew uninstall pothos pothoscomms pothosflow
brew install --HEAD pothos
brew install --HEAD pothosblocks

On pothosblocks installation I've got the same error about C language.

[guruofquality]

Its the gift that keeps giving
pothosware/PothosCore@8f92991

[drfruct]

Everything compiles perfectly! Thank You!