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https://issues.apache.org/jira/browse/MINIFICPP-1405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17243853#comment-17243853
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Adam Hunyadi commented on MINIFICPP-1405:
-----------------------------------------
The issue does not seem to be related to Ninja, our CI jobs show similar issues
using make. Will update the civetweb version, check our CI build and if they
still fail, I will generate a civetweb patch for disabling the erroneous flags.
> Improperly defined warning flags (Clang 11) break Ninja's generator rules
> (CMake). civetweb dependency build crashing
> ---------------------------------------------------------------------------------------------------------------------
>
> Key: MINIFICPP-1405
> URL: https://issues.apache.org/jira/browse/MINIFICPP-1405
> Project: Apache NiFi MiNiFi C++
> Issue Type: Bug
> Affects Versions: 1.0.0
> Environment: $ uname -a
> Linux laptop 4.15.0-123-generic #126~16.04.1-Ubuntu SMP Wed Oct 21 13:51:51
> UTC 2020 i686 i686 i686 GNU/Linux
> $ clang-11 --version
> Ubuntu clang version
> 11.0.0-++20200721055954+cebd637c886-1~exp1~20200721161335.13
> Target: i686-pc-linux-gnu
> Thread model: posix
> $ cmake --version
> cmake version 3.19.0-rc2
> $ ninja --version
> 1.10.0.git.kitware.jobserver-1
> Reporter: Ivan Serdyuk
> Assignee: Adam Hunyadi
> Priority: Major
> Labels: Linux, Ubuntu_16.04, linux, ubuntu
> Attachments: build.ninja
>
>
> [1/445] Performing build step for 'civetweb-external'
> FAILED:
> civetweb-external-prefix/src/civetweb-external-stamp/civetweb-external-build
> thirdparty/civetweb-install/lib/libcivetweb.a
> thirdparty/civetweb-install/lib/libcivetweb-cpp.a
> cd
> /home/oceanfish81/Desktop/nifi-minifi-cpp/build/civetweb-external-prefix/src/civetweb-external-build
> && /usr/local/bin/cmake --build . && /usr/local/bin/cmake -E touch
> /home/oceanfish81/Desktop/nifi-minifi-cpp/build/civetweb-external-prefix/src/civetweb-external-stamp/civetweb-external-build
> [1/6] Building CXX object src/CMakeFiles/civetweb-cpp.dir/CivetServer.cpp.o
> FAILED: src/CMakeFiles/civetweb-cpp.dir/CivetServer.cpp.o
> /usr/bin/clang++-11 -DNO_SSL_DL -DUSE_STACK_SIZE=102400
> -I/home/oceanfish81/Desktop/nifi-minifi-cpp/build/thirdparty/libressl-install/include
>
> -I/home/oceanfish81/Desktop/nifi-minifi-cpp/build/thirdparty/civetweb-src/include
> -std=c++11 -std=c++14 -Wall -Wextra -Wshadow -Wmissing-prototypes
> -Weverything /W4 -Wno-padded /Wd4820 -Wno-unused-macros
> -Wno-format-nonliteral /WX -pedantic-errors -fvisibility=hidden -Os -DNDEBUG
> -fPIC -MD -MT src/CMakeFiles/civetweb-cpp.dir/CivetServer.cpp.o -MF
> src/CMakeFiles/civetweb-cpp.dir/CivetServer.cpp.o.d -o
> src/CMakeFiles/civetweb-cpp.dir/CivetServer.cpp.o -c
> /home/oceanfish81/Desktop/nifi-minifi-cpp/build/thirdparty/civetweb-src/src/CivetServer.cpp
> clang: error: no such file or directory: '/W4'
> clang: error: no such file or directory: '/Wd4820'
> clang: error: no such file or directory: '/WX'
> [2/6] Building C object src/CMakeFiles/c-executable.dir/main.c.o
> FAILED: src/CMakeFiles/c-executable.dir/main.c.o
> /usr/bin/clang-11 -DNO_SSL_DL -DUSE_STACK_SIZE=102400
> -I/home/oceanfish81/Desktop/nifi-minifi-cpp/build/thirdparty/libressl-install/include
>
> -I/home/oceanfish81/Desktop/nifi-minifi-cpp/build/thirdparty/civetweb-src/include
> -std=c11 -Wall -Wextra -Wshadow -Wconversion -Wmissing-prototypes
> -Weverything -Wparentheses /W4 -Wno-padded -Wno-unused-macros
> -Wno-reserved-id-macros -Wno-format-nonliteral -Wno-date-time -Wno-cast-qual
> /Wd4820 -pedantic-errors -fvisibility=hidden -Os -DNDEBUG -fPIE -MD -MT
> src/CMakeFiles/c-executable.dir/main.c.o -MF
> src/CMakeFiles/c-executable.dir/main.c.o.d -o
> src/CMakeFiles/c-executable.dir/main.c.o -c
> /home/oceanfish81/Desktop/nifi-minifi-cpp/build/thirdparty/civetweb-src/src/main.c
> clang: error: no such file or directory: '/W4'
> clang: error: no such file or directory: '/Wd4820'
> ninja: build stopped: subcommand failed.
> ninja: build stopped: subcommand failed.
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