INT idle (EQUIPMENT * pequipment)

> We're using the History Logger MIDAS feature and writing to mySQL tables, but 
> in some cases have run into issues installing mySQL on centos7 systems.
> 
> Has anyone ever tried running this MIDAS feature with MariaDB rather than 
> mySQL?

Hi

I've used MIDAS Logger feature with MariaDB and had no issue thus far .

We're using the History Logger MIDAS feature and writing to mySQL tables, but 
in some cases have run into issues installing mySQL on centos7 systems.

Has anyone ever tried running this MIDAS feature with MariaDB rather than 
mySQL?

> > ... support for certbot
> 
> The certbot tool to use instead of certbot is this: https://github.com/ndilieto/uacme
> 
> K.O.


HI Stefan and Konstantin, 

Thanks a lot for your messages. Sorry for my late reply, I only work on this project from Tuesday to Thursdays. I have 
run " make cmake" instead of "cd build; cmake" and this is the output regarding mhttpd:

/Library/Developer/CommandLineTools/usr/bin/c++  -O2 -g -DNDEBUG -Wl,-search_paths_first -Wl,-
headerpad_max_install_names  CMakeFiles/mhttpd.dir/mhttpd.cxx.o CMakeFiles/mhttpd.dir/mongoose6.cxx.o 
CMakeFiles/mhttpd.dir/mgd.cxx.o CMakeFiles/mhttpd.dir/__/mscb/src/mscb.cxx.o  -o mhttpd  -lsqlite3 ../libmidas.a 
/usr/lib/libssl.dylib /usr/lib/libcrypto.dylib -lz -lsqlite3 /usr/lib/libssl.dylib /usr/lib/libcrypto.dylib -lz 
Undefined symbols for architecture x86_64:
  "_OPENSSL_init_ssl", referenced from:
      _mg_mgr_init in mongoose6.cxx.o
  "_SSL_CTX_set_options", referenced from:
      _mg_set_ssl in mongoose6.cxx.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)


I see that in your outputs the openssl libs are in /opt/local/lib/ while mine are in /usr/lib/, and that is the only difference. 
I have checked that the libraries libssl.dylib and libcrypto.dylib are in my /usr/lib/, and indeed they are, so I don't 
understand the reason for the error, I will continue investigating. 

Thanks 

Berta 

> ... support for certbot

The certbot tool to use instead of certbot is this: https://github.com/ndilieto/uacme

K.O.

> >
> > .../c++  ...  /opt/local/lib/libssl.dylib
> >
> 
> I get the same, libssl from /opt/local, so we are not using openssl shipped with mac os.
> 

I note that latest mongoose 6.16 finally has a virtual ssl layer and appears to support mbedtls (polarssl) in addition to openssl.

I now think I should see if it works - as it gives us a way to support https without relying on the user having
pre-installed working openssl packages - we consistently run into problems with openssl on macos, and even
on linux there was trouble with preinstalled openssl packages and libraries.

With mbedtls, one will have to "git pull" and "make" it, but historically this causes much less trouble.

Also, with luck, mbedtls has better support for certificate expiration (I would really love to have openssl report an error
or a warning or at least some hint if I feed it an expired certificate) and (gasp!) certbot integration.

K.O.

>
> .../c++  ...  /opt/local/lib/libssl.dylib
>

I get the same, libssl from /opt/local, so we are not using openssl shipped with mac os.

We still do not know were OP's libssl comes from and if there is a mismatch between
openssl header files and library (header files from one openssl, library from a different openssl).

OP's cmake output: (no VERBOSE=1)
> -- MIDAS: cmake version: 3.16.3
> -- MIDAS: Found OpenSSL version 1.1.1d

Stefan's and my cmake output: (VERBOSE=1)
> -- MIDAS: cmake version: 3.16.3
> -- Found OpenSSL: /opt/local/lib/libcrypto.dylib (found version "1.1.1d")  
> -- MIDAS: Found OpenSSL version 1.1.1d

Without VERBOSE=1 cmake does not tell is which OpenSSL it found (not useful).
With VERBOSE=1 cmake outputs a flood of gunk (not useful).

My solution is to filter the cmake output with grep in "make cmake" ("make cmake3").

So please use that: "make cmake" - the output is roughly the same as normal make - compiler command lines (CFLAGS, library paths, etc),
compiler error message and all of the useful cmake output.

K.O.

Request:

Please use "make cmake" ("make cmake3") to report build problems.

cmake with VERBOSE=1 prints way too much stuff and I find it is impossible to use.

"make cmake" filters out all the gunk to make it easy to see the relevant information:
- the compiler command lines (CFLAGS, library paths, etc)
- the compiler output (error messages, etc).

The best I can tell, cmake "VERBOSE=1" in only useful for cmake developers to debug cmake itself.

K.O.

> I tried on my Mac (macOS 10.14.6, Xcode 11.3.1, current develop branch, openssl 1.1.1d) and it woks fine. Below is the transcript. I 
> see that your cmake output is much shorter (no C compiler listed etc.). Did you remove some lines? For such comparisons, it's 
> always good to start with an empty build directory.
> 
> OpenSSL libraries are the same (1.1.1d). Just for comparison, I run the build process with "make VERBOSE=1" and extract the line 
> which fails for you when linking mhttp, so maybe you can compare.
> 
> Linking mhttpd
> ---------------
> 
> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++  -O2 -g -DNDEBUG -isysroot 
> /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk -mmacosx-version-
> min=10.14 -Wl,-search_paths_first -Wl,-headerpad_max_install_names  CMakeFiles/mhttpd.dir/mhttpd.cxx.o 
> CMakeFiles/mhttpd.dir/mongoose6.cxx.o CMakeFiles/mhttpd.dir/mgd.cxx.o CMakeFiles/mhttpd.dir/__/mscb/src/mscb.cxx.o  -o 
> mhttpd  -L/opt/local/lib/mysql57/mysql -lmysqlclient -lz ../libmidas.a /opt/local/lib/libssl.dylib /opt/local/lib/libcrypto.dylib -lz -
> L/opt/local/lib/mysql57/mysql -lmysqlclient -lz 
> 
> 
> Here is the full transcript
> -------------------------
> 
> /midas/build$ cmake ..
> -- MIDAS: cmake version: 3.16.3
> -- The C compiler identification is AppleClang 11.0.0.11000033
> -- The CXX compiler identification is AppleClang 11.0.0.11000033
> -- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc
> -- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc -- 
> works
> -- Detecting C compiler ABI info
> -- Detecting C compiler ABI info - done
> -- Detecting C compile features
> -- Detecting C compile features - done
> -- Check for working CXX compiler: 
> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++
> -- Check for working CXX compiler: 
> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -- works
> -- Detecting CXX compiler ABI info
> -- Detecting CXX compiler ABI info - done
> -- Detecting CXX compile features
> -- Detecting CXX compile features - done
> -- MIDAS: CMAKE_INSTALL_PREFIX: /midas
> -- MIDAS: Found ROOT version 6.16/00
> -- Found ZLIB: /opt/local/lib/libz.dylib (found version "1.2.11") 
> -- MIDAS: Found ZLIB version 1.2.11
> -- Found OpenSSL: /opt/local/lib/libcrypto.dylib (found version "1.1.1d")  
> -- MIDAS: Found OpenSSL version 1.1.1d
> -- MIDAS: Found MySQL version 5.7.26
> -- MIDAS: ODBC not found
> -- MIDAS: SQLITE not found
> -- MIDAS: nvidia-smi not found
> -- Setting default build type to "RelWithDebInfo"
> -- Found Git: /usr/bin/git (found version "2.21.1 (Apple Git-122.3)") 
> -- MIDAS example/experiment: MIDAS in-tree-build
> -- MIDAS: Found ZLIB version 1.2.11
> -- MIDAS example/experiment: Found ROOT version 6.16/00
> -- Configuring done
> -- Generating done
> -- Build files have been written to: /midas/build
> /midas/build$ make
> Scanning dependencies of target rmana
> Scanning dependencies of target git_revision_h
> Scanning dependencies of target mfe
> Scanning dependencies of target manao
> Scanning dependencies of target mfeo
> Scanning dependencies of target objlib-c-compat
> Scanning dependencies of target mana
> Scanning dependencies of target rmanao
> [  0%] Building CXX object CMakeFiles/objlib-c-compat.dir/src/midas_c_compat.cxx.o
> [  2%] Building CXX object CMakeFiles/mfe.dir/src/mfe.cxx.o
> [  2%] Building CXX object CMakeFiles/mfeo.dir/src/mfe.cxx.o
> [  3%] Building CXX object CMakeFiles/mana.dir/src/mana.cxx.o
> [  4%] Building CXX object CMakeFiles/manao.dir/src/mana.cxx.o
> [  5%] Building CXX object CMakeFiles/rmanao.dir/src/mana.cxx.o
> [  6%] Building CXX object CMakeFiles/rmana.dir/src/mana.cxx.o
> [  6%] Built target git_revision_h
> Scanning dependencies of target objlib
> [  7%] Building CXX object CMakeFiles/objlib.dir/src/midas.cxx.o
> [  7%] Built target objlib-c-compat
> [  8%] Building CXX object CMakeFiles/objlib.dir/src/midas_cxx.cxx.o
> [  8%] Linking CXX static library libmana.a
> [  8%] Built target manao
> [  8%] Building CXX object CMakeFiles/objlib.dir/src/odb.cxx.o
> [  8%] Built target mana
> [  9%] Building CXX object CMakeFiles/objlib.dir/src/device_driver.cxx.o
> [  9%] Built target mfeo
> [ 10%] Linking CXX static library libmfe.a
> [ 11%] Building CXX object CMakeFiles/objlib.dir/src/system.cxx.o
> [ 11%] Built target mfe
> [ 11%] Building CXX object CMakeFiles/objlib.dir/src/alarm.cxx.o
> [ 12%] Building CXX object CMakeFiles/objlib.dir/src/elog.cxx.o
> [ 13%] Building CXX object CMakeFiles/objlib.dir/src/mrpc.cxx.o
> [ 13%] Building CXX object CMakeFiles/objlib.dir/src/mjson.cxx.o
> [ 14%] Building CXX object CMakeFiles/objlib.dir/src/tmfe.cxx.o
> [ 15%] Building CXX object CMakeFiles/objlib.dir/src/mvodb.cxx.o
> [ 15%] Built target rmanao
> [ 15%] Linking CXX static library librmana.a
> [ 16%] Building CXX object CMakeFiles/objlib.dir/src/nullodb.cxx.o
> [ 16%] Building CXX object CMakeFiles/objlib.dir/src/midasodb.cxx.o
> [ 16%] Built target rmana
> [ 17%] Building CXX object CMakeFiles/objlib.dir/src/mxmlodb.cxx.o
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> [ 22%] Building CXX object CMakeFiles/objlib.dir/src/history_odbc.cxx.o
> [ 23%] Building CXX object CMakeFiles/objlib.dir/src/history_schema.cxx.o
> [ 23%] Building CXX object CMakeFiles/objlib.dir/src/lz4.cxx.o
> [ 24%] Building CXX object CMakeFiles/objlib.dir/src/lz4frame.cxx.o
> [ 25%] Building CXX object CMakeFiles/objlib.dir/src/lz4hc.cxx.o
> [ 26%] Building CXX object CMakeFiles/objlib.dir/src/xxhash.cxx.o
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> [ 27%] Building CXX object CMakeFiles/objlib.dir/src/sha256.cxx.o
> [ 28%] Building CXX object CMakeFiles/objlib.dir/src/sha512.cxx.o
> [ 28%] Building CXX object CMakeFiles/objlib.dir/src/ftplib.cxx.o
> [ 29%] Building CXX object CMakeFiles/objlib.dir/src/mdsupport.cxx.o
> [ 30%] Building CXX object CMakeFiles/objlib.dir/mxml/mxml.cxx.o
> [ 31%] Building CXX object CMakeFiles/objlib.dir/mxml/strlcpy.cxx.o
> [ 31%] Built target objlib
> Scanning dependencies of target midas-shared
> Scanning dependencies of target midas
> [ 33%] Linking CXX shared library libmidas-shared.dylib
> [ 33%] Linking CXX static library libmidas.a
> [ 33%] Built target midas-shared
> [ 33%] Built target midas
> Scanning dependencies of target mhttpd
> Scanning dependencies of target feudp
> Scanning dependencies of target odb_lock_test
> Scanning dependencies of target rmlogger
> Scanning dependencies of target mchart
> Scanning dependencies of target msysmon
> Scanning dependencies of target midas-c-compat
> Scanning dependencies of target mfe_link_test
> [ 33%] Building CXX object progs/CMakeFiles/mfe_link_test.dir/mfe_link_test.cxx.o
> [ 33%] Linking CXX shared library libmidas-c-compat.dylib
> [ 34%] Building CXX object progs/CMakeFiles/feudp.dir/feudp.cxx.o
> [ 35%] Building CXX object progs/CMakeFiles/msysmon.dir/msysmon.cxx.o
> [ 36%] Building CXX object progs/CMakeFiles/mchart.dir/mchart.cxx.o
> [ 37%] Building CXX object progs/CMakeFiles/odb_lock_test.dir/odb_lock_test.cxx.o
> [ 38%] Building CXX object progs/CMakeFiles/rmlogger.dir/mlogger.cxx.o
> [ 39%] Building CXX object progs/CMakeFiles/mhttpd.dir/mhttpd.cxx.o
> [ 39%] Built target midas-c-compat
> [ 40%] Building CXX object progs/CMakeFiles/mhttpd.dir/mongoose6.cxx.o
> [ 41%] Linking CXX executable mfe_link_test
> [ 42%] Linking CXX executable odb_lock_test
> [ 42%] Built target mfe_link_test
> Scanning dependencies of target mjson_test
> [ 43%] Building CXX object progs/CMakeFiles/mjson_test.dir/mjson_test.cxx.o
> [ 43%] Linking CXX executable mchart
> [ 43%] Built target odb_lock_test
> Scanning dependencies of target odbinit
> [ 44%] Building CXX object progs/CMakeFiles/odbinit.dir/odbinit.cxx.o
> [ 45%] Linking CXX executable feudp
> [ 45%] Built target mchart
> [ 46%] Building CXX object progs/CMakeFiles/mhttpd.dir/mgd.cxx.o
> [ 46%] Built target feudp
> [ 46%] Building CXX object progs/CMakeFiles/mhttpd.dir/__/mscb/src/mscb.cxx.o
> [ 47%] Linking CXX executable mjson_test
> [ 47%] Built target mjson_test
> Scanning dependencies of target fetest_tmfe_thread
> [ 47%] Building CXX object progs/CMakeFiles/fetest_tmfe_thread.dir/fetest_tmfe_thread.cxx.o
> [ 47%] Linking CXX executable msysmon
> [ 47%] Built target msysmon
> [ 48%] Linking CXX executable odbinit
> Scanning dependencies of target fetest_tmfe
> [ 49%] Building CXX object progs/CMakeFiles/fetest_tmfe.dir/fetest_tmfe.cxx.o
> [ 49%] Built target odbinit
> [ 50%] Linking CXX executable fetest_tmfe_thread
> Scanning dependencies of target mh2sql
> [ 51%] Building CXX object progs/CMakeFiles/mh2sql.dir/mh2sql.cxx.o
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> [ 51%] Building CXX object progs/CMakeFiles/odbhist.dir/odbhist.cxx.o
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> Scanning dependencies of target melog
> [ 51%] Building CXX object progs/CMakeFiles/melog.dir/melog.cxx.o
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> [ 54%] Linking CXX executable fetest_tmfe
> Scanning dependencies of target mfe_link_test_cxx
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> [ 58%] Built target crc32c_sum
> [ 59%] Building CXX object progs/CMakeFiles/odbedit.dir/cmdedit.cxx.o
> [ 59%] Linking CXX executable mfe_link_test_cxx
> Scanning dependencies of target mdump
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> [ 60%] Building CXX object progs/CMakeFiles/mdump.dir/mdump.cxx.o
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> [ 60%] Built target mfe_link_test_cxx
> Scanning dependencies of target lazylogger
> [ 61%] Building CXX object progs/CMakeFiles/lazylogger.dir/lazylogger.cxx.o
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> [ 95%] Building CXX object examples/slowcont/CMakeFiles/scfe.dir/__/__/mscb/src/mscb.cxx.o
> [ 96%] Linking CXX executable msequencer
> [ 96%] Built target msequencer
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> [ 99%] Built target scfe
> [100%] Linking CXX executable mhttpd
> [100%] Built target mhttpd
> /midas/build$ 

I tried on my Mac (macOS 10.14.6, Xcode 11.3.1, current develop branch, openssl 1.1.1d) and it woks fine. Below is the transcript. I 
see that your cmake output is much shorter (no C compiler listed etc.). Did you remove some lines? For such comparisons, it's 
always good to start with an empty build directory.

OpenSSL libraries are the same (1.1.1d). Just for comparison, I run the build process with "make VERBOSE=1" and extract the line 
which fails for you when linking mhttp, so maybe you can compare.

Linking mhttpd
---------------

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++  -O2 -g -DNDEBUG -isysroot 
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk -mmacosx-version-
min=10.14 -Wl,-search_paths_first -Wl,-headerpad_max_install_names  CMakeFiles/mhttpd.dir/mhttpd.cxx.o 
CMakeFiles/mhttpd.dir/mongoose6.cxx.o CMakeFiles/mhttpd.dir/mgd.cxx.o CMakeFiles/mhttpd.dir/__/mscb/src/mscb.cxx.o  -o 
mhttpd  -L/opt/local/lib/mysql57/mysql -lmysqlclient -lz ../libmidas.a /opt/local/lib/libssl.dylib /opt/local/lib/libcrypto.dylib -lz -
L/opt/local/lib/mysql57/mysql -lmysqlclient -lz 


Here is the full transcript
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/midas/build$ cmake ..
-- MIDAS: cmake version: 3.16.3
-- The C compiler identification is AppleClang 11.0.0.11000033
-- The CXX compiler identification is AppleClang 11.0.0.11000033
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc -- 
works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: 
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++
-- Check for working CXX compiler: 
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- MIDAS: CMAKE_INSTALL_PREFIX: /midas
-- MIDAS: Found ROOT version 6.16/00
-- Found ZLIB: /opt/local/lib/libz.dylib (found version "1.2.11") 
-- MIDAS: Found ZLIB version 1.2.11
-- Found OpenSSL: /opt/local/lib/libcrypto.dylib (found version "1.1.1d")  
-- MIDAS: Found OpenSSL version 1.1.1d
-- MIDAS: Found MySQL version 5.7.26
-- MIDAS: ODBC not found
-- MIDAS: SQLITE not found
-- MIDAS: nvidia-smi not found
-- Setting default build type to "RelWithDebInfo"
-- Found Git: /usr/bin/git (found version "2.21.1 (Apple Git-122.3)") 
-- MIDAS example/experiment: MIDAS in-tree-build
-- MIDAS: Found ZLIB version 1.2.11
-- MIDAS example/experiment: Found ROOT version 6.16/00
-- Configuring done
-- Generating done
-- Build files have been written to: /midas/build
/midas/build$ make
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/midas/build$ 

Hi, yes, this is the right place to report problems and to ask questions about midas.

As for your trouble, I have the same macos 10.13.6, so we should be able to figure out what goes wrong.

Unfortunately, the posted instructions (to run cmake directly) hide all the information needed to debug build problems.

Instead of "cd build; cmake ..", please run "make cmake" and post the output. Printed should be all the compiler
and linker commands executed by the build. You can examine the mhttpd linker command to see if somehow
the wrong openssl library is being used.

If you do not need built-in https support in mhttpd, you can run "make cmake NO_SSL=1".

K.O.

> Hi all, 
> 
> I have a Mac with OS 10.13.6 and Xcode 10.1. I am following the instructions in the wiki to install Midas. 
> I have installed openssl via MacPorts as per the instructions. But then I get an error related to open ssl 
> when I try to compile Midas. See the results of cmake .. and make install 
> 
> Darrens-Mac-mini:build betacage$ cmake ..
> -- MIDAS: cmake version: 3.16.3
> -- MIDAS: CMAKE_INSTALL_PREFIX: /Users/betacage/packages/midas
> -- MIDAS: Found ROOT version 6.18/04
> -- MIDAS: Found ZLIB version 1.2.11
> -- MIDAS: Found OpenSSL version 1.1.1d
> -- MIDAS: MySQL not found
> -- MIDAS: ODBC not found
> -- MIDAS: Found SQLITE /usr/include/sqlite3.h
> -- MIDAS: nvidia-smi not found
> -- MIDAS example/experiment: MIDAS in-tree-build
> -- MIDAS: Found ZLIB version 1.2.11
> -- MIDAS example/experiment: Found ROOT version 6.18/04
> -- Configuring done
> -- Generating done
> -- Build files have been written to: /Users/betacage/packages/midas/build
> Darrens-Mac-mini:build betacage$ make install 
> [  1%] Built target mfeo
> [  3%] Built target mfe
> [  4%] Built target rmana
> [  5%] Built target manao
> [  6%] Built target mana
> [  6%] Built target git_revision_h
> [ 30%] Built target objlib
> [ 31%] Built target midas
> [ 32%] Built target rmanao
> [ 32%] Built target objlib-c-compat
> [ 32%] Built target midas-c-compat
> [ 33%] Built target midas-shared
> [ 35%] Built target rmlogger
> [ 36%] Linking CXX executable mhttpd
> Undefined symbols for architecture x86_64:
>   "_OPENSSL_init_ssl", referenced from:
>       _mg_mgr_init in mongoose6.cxx.o
>   "_SSL_CTX_set_options", referenced from:
>       _mg_set_ssl in mongoose6.cxx.o
> ld: symbol(s) not found for architecture x86_64
> clang: error: linker command failed with exit code 1 (use -v to see invocation)
> make[2]: *** [progs/mhttpd] Error 1
> make[1]: *** [progs/CMakeFiles/mhttpd.dir/all] Error 2
> make: *** [all] Error 2
> 
> 
> I hope that this is the right forum to submit this kind of reports.
> Any idea what do I have to do to continue ? Thanks is advance !
> 
> Berta 

Hi all, 

I have a Mac with OS 10.13.6 and Xcode 10.1. I am following the instructions in the wiki to install Midas. 
I have installed openssl via MacPorts as per the instructions. But then I get an error related to open ssl 
when I try to compile Midas. See the results of cmake .. and make install 

Darrens-Mac-mini:build betacage$ cmake ..
-- MIDAS: cmake version: 3.16.3
-- MIDAS: CMAKE_INSTALL_PREFIX: /Users/betacage/packages/midas
-- MIDAS: Found ROOT version 6.18/04
-- MIDAS: Found ZLIB version 1.2.11
-- MIDAS: Found OpenSSL version 1.1.1d
-- MIDAS: MySQL not found
-- MIDAS: ODBC not found
-- MIDAS: Found SQLITE /usr/include/sqlite3.h
-- MIDAS: nvidia-smi not found
-- MIDAS example/experiment: MIDAS in-tree-build
-- MIDAS: Found ZLIB version 1.2.11
-- MIDAS example/experiment: Found ROOT version 6.18/04
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/betacage/packages/midas/build
Darrens-Mac-mini:build betacage$ make install 
[  1%] Built target mfeo
[  3%] Built target mfe
[  4%] Built target rmana
[  5%] Built target manao
[  6%] Built target mana
[  6%] Built target git_revision_h
[ 30%] Built target objlib
[ 31%] Built target midas
[ 32%] Built target rmanao
[ 32%] Built target objlib-c-compat
[ 32%] Built target midas-c-compat
[ 33%] Built target midas-shared
[ 35%] Built target rmlogger
[ 36%] Linking CXX executable mhttpd
Undefined symbols for architecture x86_64:
  "_OPENSSL_init_ssl", referenced from:
      _mg_mgr_init in mongoose6.cxx.o
  "_SSL_CTX_set_options", referenced from:
      _mg_set_ssl in mongoose6.cxx.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [progs/mhttpd] Error 1
make[1]: *** [progs/CMakeFiles/mhttpd.dir/all] Error 2
make: *** [all] Error 2


I hope that this is the right forum to submit this kind of reports.
Any idea what do I have to do to continue ? Thanks is advance !

Berta 

> > In any case, we are setup for an eventual collision between MIDAS CFLAGS (-std=gnu++11) and ROOT CFLAGS (-std=something else).
> 
> Are there good reasons to not compile MIDAS with set(CMAKE_CXX_STANDARD 14)? So far this was an easier "fix" for me than to recompile ROOT with c++11.

Per  https://root.cern.ch/supported-platforms, ROOTv6 is C++11.

Binary kits distributed from root.cern.ch seem to be built with c++11.

Where does ROOT built with c++14 come from?

K.O.

> > In any case, we are setup for an eventual collision between MIDAS CFLAGS (-std=gnu++11) and ROOT CFLAGS (-std=something else).
> 
> Are there good reasons to not compile MIDAS with set(CMAKE_CXX_STANDARD 14)? So far this was an easier "fix" for me than to recompile ROOT with c++11.

We already have trouble enough even with requiring C++11:

We still run a number of SL6 DAQ stations at TRIUMF, and it is well known that SL6 gcc does not even do c++11.

The suggested solution to "simply just use the devtoolset-8" compilers turned out to be missing a critical 32-bit
library and cannot build midas for 32-bit VME processors. (straight or cross-compiled).

(A solution for this can be kludged using unofficial packages: https://midas.triumf.ca/elog/Midas/1748)

No, we cannot "just upgrade" SL6 and no, we cannot "just replace" the 32-bit-only VME processors.

If we move the midas requirements from c++11 to c++14, again, we have to see what compilers
are available on what platforms, and I am sure again we will miss some important case.

And then, where does this train stop?

I see c++17 has some really nice to use improvements. And I see c++20 added even some more nice improvements.

I say we follow ROOT: https://root.cern.ch/supported-platforms

> Supported Platforms
> ROOT 6
> The compiler needs to support -std=c++11 to be able to build version 6.

K.O.

> > In any case, we are setup for an eventual collision between MIDAS CFLAGS (-std=gnu++11) and ROOT CFLAGS (-std=something else).
> 
> Are there good reasons to not compile MIDAS with set(CMAKE_CXX_STANDARD 14)? So far this was an easier "fix" for me than to recompile ROOT with c++11.

Yes. We agreed to base MIDAS on C++11, not C++14, since C++11 is available on all relevant systems. By putting that requirement explicitly into the CMake file, we know that it 
correctly compiles with C++11. Of course feel free to overwrite this in your local installation.

Stefan

> In any case, we are setup for an eventual collision between MIDAS CFLAGS (-std=gnu++11) and ROOT CFLAGS (-std=something else).

Are there good reasons to not compile MIDAS with set(CMAKE_CXX_STANDARD 14)? So far this was an easier "fix" for me than to recompile ROOT with c++11.

> Complile including ROOT throws an error with ROOT 6.18/04 on Fedora 31 ...
> /usr/include/root/ROOT/RStringView.hxx:32:37: error: ‘experimental’ in namespace ‘std’ ...

I was puzzled by this error about "experimental" in ROOT header files.

All ROOT kits that I have are configured and built with c++11, and I do not see this error. I now guess that you
only saw this on Fedora 31 with gcc 9 and ROOT that was configured for c++14 or c++17.

We now realize that MIDAS cmake does not use the ROOT CFLAGS when building code that uses ROOT,
and this is probably a mistake. Stefan added a fix to use ROOT CFLAGS to build the analyzer,
but I am not sure if this is sufficient, rmana and rmlogger probably also should use the ROOT CFLAGS.

In any case, we are setup for an eventual collision between MIDAS CFLAGS (-std=gnu++11) and ROOT CFLAGS (-std=something else).

K.O.

>
> > I have EPICS Base Release 3.14.8.2 ...
>

For the record, according to https://epics.anl.gov/

the 3.14 branch is "Closed, please upgrade!"
the 3.15 branch seems to be the current "stable" branch, and
the 7.0 branch is the "current release"

I forget which version of EPICS is currently recommended by the TRIUMF controls group. I will have to go and ask them.

K.O.

> I have EPICS Base Release 3.14.8.2 and got your example running with it...

Ok, good.

> I had to make one change.
> For some reason it wouldn't find libca.so, but when I linked the static library libca.a instead, it worked.

Yes, libca.a is what I see in my epics, too. I recommend static linking (libxxx.a instead of libxxx.so) as it eliminates
all possible problems with "cannot find the shared library" and "found the wrong shared library" and "found
a shared library from a different version of epics".

> Also my midas frontend works now with the updated epics_ca.xx. There was a problem with an old local version of cadef.h
> (probably a leftover from some previous testing). After removing it everything compiled well.

Ok. good. I also see some old epics header files in the midas repository. I guess I should remove them.

K.O.


> 
> Thanks,
> Peter
> 
> 
> > I fixed the compiler errors in epics_ca.cxx, can you try again? (see https://bitbucket.org/tmidas/midas/commits/)
> > 
> > But, I do not see errors with ca_create_channel() and ca_create_subscription().
> > 
> > Maybe I am using the wrong epics. If you still see these errors, let me know what epics you have, I will try the same one.
> > 
> > This is what I do (and I get epics 7.0).
> > 
> > mkdir -p $HOME/git
> > cd $HOME/git
> > git clone https://git.launchpad.net/epics-base
> > cd epics-base
> > make
> > ls -l include/cadef.h
> > ls -l lib/darwin-x86/libca.a # also linux-x86/libca.a
> > 
> > K.O.
> > 
> > > > I'm still trying to upgrade my MIDAS system to midas-2019-09-i. Most frontends work fine with the modifications already discussed.
> > > > However, I ran into some trouble with the epics frontend. Even with the modifications it throws a lot of warnings and errors (see attached log file). I can reduce the errors with -fpermissive, but the following two errors are persistent:
> > > > 
> > > > /home/ays/packages/midas/drivers/device/epics_ca.cxx:167:38: error: ‘ca_create_channel’ was not declared in this scope
> > > >             , &(info->caid[i].chan_id))
> > > > 
> > > > /home/ays/packages/midas/drivers/device/epics_ca.cxx:178:37: error: ‘ca_create_subscription’ was not declared in this scope
> > > >             , &(info->caid[i].evt_id))
> > > > 
> > > > This is strange because the functions seem to be declared in base/include/cadef.h along with similar functions that don't throw an error.
> > > > I don't know what's going on. The frontend which is almost identical to the example in the midas distribution compiles without warnings or errors under the Midas2017 version. 
> > > 
> > > Hi, Peter - it looks like epics_ca.cxx needs to be updated to proper C++ (char* warnings, etc).
> > > 
> > > As for the "function not declared" errors, it's the C++ way to say "you are calling a function with wrong arguments",
> > > again, something I should be able to fix without too much trouble.
> > > 
> > > Thank you for reporting this, the midas version of epics_ca.cxx definitely needs fixing.
> > > 
> > > K.O.

Hi Konstantin,
I have EPICS Base Release 3.14.8.2 and got your example running with it, though I had to make one change.
For some reason it wouldn't find libca.so, but when I linked the static library libca.a instead, it worked.
Also my midas frontend works now with the updated epics_ca.xx. There was a problem with an old local version of cadef.h
(probably a leftover from some previous testing). After removing it everything compiled well.

Thanks,
Peter


> I fixed the compiler errors in epics_ca.cxx, can you try again? (see https://bitbucket.org/tmidas/midas/commits/)
> 
> But, I do not see errors with ca_create_channel() and ca_create_subscription().
> 
> Maybe I am using the wrong epics. If you still see these errors, let me know what epics you have, I will try the same one.
> 
> This is what I do (and I get epics 7.0).
> 
> mkdir -p $HOME/git
> cd $HOME/git
> git clone https://git.launchpad.net/epics-base
> cd epics-base
> make
> ls -l include/cadef.h
> ls -l lib/darwin-x86/libca.a # also linux-x86/libca.a
> 
> K.O.
> 
> > > I'm still trying to upgrade my MIDAS system to midas-2019-09-i. Most frontends work fine with the modifications already discussed.
> > > However, I ran into some trouble with the epics frontend. Even with the modifications it throws a lot of warnings and errors (see attached log file). I can reduce the errors with -fpermissive, but the following two errors are persistent:
> > > 
> > > /home/ays/packages/midas/drivers/device/epics_ca.cxx:167:38: error: ‘ca_create_channel’ was not declared in this scope
> > >             , &(info->caid[i].chan_id))
> > > 
> > > /home/ays/packages/midas/drivers/device/epics_ca.cxx:178:37: error: ‘ca_create_subscription’ was not declared in this scope
> > >             , &(info->caid[i].evt_id))
> > > 
> > > This is strange because the functions seem to be declared in base/include/cadef.h along with similar functions that don't throw an error.
> > > I don't know what's going on. The frontend which is almost identical to the example in the midas distribution compiles without warnings or errors under the Midas2017 version. 
> > 
> > Hi, Peter - it looks like epics_ca.cxx needs to be updated to proper C++ (char* warnings, etc).
> > 
> > As for the "function not declared" errors, it's the C++ way to say "you are calling a function with wrong arguments",
> > again, something I should be able to fix without too much trouble.
> > 
> > Thank you for reporting this, the midas version of epics_ca.cxx definitely needs fixing.
> > 
> > K.O.