mysql8: can't configure with gcc5 under tracemode

[chrstphrchvz (Christopher Chavez)]

(Ticket 1 of 2) The mysql8 port was set to avoid compiling with gcc5 initially in [f33623dd62/macports-ports] and refined in [3db241d4f4/macports-ports], [93573a70d6/macports-ports]. But I have not found a detailed explanation of why this was done. Note that ​upstream documentation only mentions support for building on macOS with Xcode 9 or later; the port bypasses this check (#58579).

Using compiler.whitelist macports-gcc-5, configuring the port fails when using tracemode (configuration succeeds without trace mode, but the build still fails eventually: #60894):

--->  Configuring mysql8
        (using ccache)
Executing:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_github.com_macports_macports-ports_databases_mysql8/mysql8/work/build" && /opt/local/bin/cmake -G "CodeBlocks - Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX="/opt/local" -DCMAKE_INSTALL_NAME_DIR="/opt/local/lib" -DCMAKE_SYSTEM_PREFIX_PATH="/opt/local;/usr" -DCMAKE_C_COMPILER_LAUNCHER=/opt/local/bin/ccache -DCMAKE_CXX_COMPILER_LAUNCHER=/opt/local/bin/ccache -DCMAKE_C_COMPILER="$CC" -DCMAKE_CXX_COMPILER="$CXX" -DCMAKE_POLICY_DEFAULT_CMP0025=NEW -DCMAKE_POLICY_DEFAULT_CMP0060=NEW -DCMAKE_VERBOSE_MAKEFILE=ON -DCMAKE_COLOR_MAKEFILE=ON -DCMAKE_FIND_FRAMEWORK=LAST -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DCMAKE_MAKE_PROGRAM=/usr/bin/make -DCMAKE_MODULE_PATH="/opt/local/share/cmake/Modules" -DCMAKE_PREFIX_PATH="/opt/local/share/cmake/Modules" -DCMAKE_INSTALL_RPATH=";/opt/local/lib" -Wno-dev -DWITH_DEBUG=OFF -DWITH_DTRACE:BOOL=OFF -DWITH_UNIT_TESTS=OFF -DCMAKE_BUILD_WITH_INSTALL_RPATH:BOOL=OFF -DCMAKE_INSTALL_NAME_DIR:PATH="/opt/local/lib/mysql8/mysql" -DFORCE_UNSUPPORTED_COMPILER=ON -DDOWNLOAD_BOOST=0 -DENABLE_DOWNLOADS:BOOL=OFF -DINSTALL_LAYOUT:STRING=MACPORTS -DMYSQL_DATADIR:PATH="/opt/local/var/db/mysql8" -DMYSQL_UNIX_ADDR:PATH="/opt/local/var/run/mysql8/mysqld.sock" -DSYSCONFDIR:PATH="/opt/local/etc/mysql8" -DWITH_BOOST:PATH="/opt/local/var/macports/build/_opt_local_var_macports_sources_github.com_macports_macports-ports_databases_mysql8/mysql8/work/mysql-8.0.21/../boost_1_72_0" -DWITH_ICU:PATH="/opt/local" -DWITH_INNODB_MEMCACHED=1 -DWITH_PROTOBUF=bundled -DWITH_SASL:PATH="/opt/local" -DWITH_SSL:PATH="/opt/local" -DWITH_ZLIB:PATH="/opt/local" -DWITH_ZSTD=system -DWITH_ROUTER:BOOL=OFF -DCMAKE_OSX_ARCHITECTURES="x86_64" -DCMAKE_OSX_DEPLOYMENT_TARGET="10.15" -DCMAKE_OSX_SYSROOT="/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk" /opt/local/var/macports/build/_opt_local_var_macports_sources_github.com_macports_macports-ports_databases_mysql8/mysql8/work/mysql-8.0.21
-- Running cmake version 3.17.3
-- Found Git: /usr/bin/git (found version "2.24.3 (Apple Git-128)")
-- MySQL 8.0.21
-- The C compiler identification is GNU 5.5.0
-- The CXX compiler identification is GNU 5.5.0
-- Checking whether C compiler has -isysroot
-- Checking whether C compiler has -isysroot - yes
-- Checking whether C compiler supports OSX deployment target flag
-- Checking whether C compiler supports OSX deployment target flag - yes
-- Check for working C compiler: /opt/local/bin/gcc-mp-5
-- Check for working C compiler: /opt/local/bin/gcc-mp-5 - broken
CMake Error at /opt/local/share/cmake-3.17/Modules/CMakeTestCCompiler.cmake:60 (message):
  The C compiler

    "/opt/local/bin/gcc-mp-5"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /opt/local/var/macports/build/_opt_local_var_macports_sources_github.com_macports_macports-ports_databases_mysql8/mysql8/work/build/CMakeFiles/CMakeTmp

    Run Build Command(s):/usr/bin/make cmTC_4632c/fast && /Library/Developer/CommandLineTools/usr/bin/make  -f CMakeFiles/cmTC_4632c.dir/build.make CMakeFiles/cmTC_4632c.dir/build
    Building C object CMakeFiles/cmTC_4632c.dir/testCCompiler.c.o
    /opt/local/bin/gcc-mp-5   -pipe -Os -DNDEBUG -I/opt/local/include -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk  -arch x86_64 -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -mmacosx-version-min=10.15   -o CMakeFiles/cmTC_4632c.dir/testCCompiler.c.o   -c /opt/local/var/macports/build/_opt_local_var_macports_sources_github.com_macports_macports-ports_databases_mysql8/mysql8/work/build/CMakeFiles/CMakeTmp/testCCompiler.c
    Linking C executable cmTC_4632c
    /opt/local/bin/cmake -E cmake_link_script CMakeFiles/cmTC_4632c.dir/link.txt --verbose=1
    /opt/local/bin/gcc-mp-5 -pipe -Os -DNDEBUG -I/opt/local/include -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk  -arch x86_64 -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -mmacosx-version-min=10.15 -Wl,-search_paths_first -Wl,-headerpad_max_install_names -L/opt/local/lib -Wl,-headerpad_max_install_names -Wl,-syslibroot,/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk  CMakeFiles/cmTC_4632c.dir/testCCompiler.c.o  -o cmTC_4632c
    collect2: fatal error: close: Bad file descriptor
    compilation terminated.
    make[1]: *** [cmTC_4632c] Error 1
    make[1]: *** Deleting file `cmTC_4632c'
    make: *** [cmTC_4632c/fast] Error 2





  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:354 (PROJECT)


-- Configuring incomplete, errors occurred!

[chrstphrchvz (Christopher Chavez)]

main.log for configuring with tracemode