magicspp: C compiler cannot create executables

[staffan.scherloff@…]

Magicpp 2.16.1 will not install on a freshly installed system. However, all dependencies will. Copy of log enclosed.

[staffan.scherloff@…]

installation log

[ryandesign (Ryan Carsten Schmidt)]

As the log says:

:info:configure configure: error: C compiler cannot create executables
:info:configure See `config.log' for more details.

This usually means the command line tools are not installed properly; please install them by opening Xcode.app, going to Preferences, to Downloads. If that doesn't fix it, please provide the afforementioned config.log file; it's in the directory identified by the command port work magicspp.

[mf2k (Frank Schima)]

Trac is not for tech support and there is nothing to fix here. Please move to the ​Macports Users mailing list for further help.

[staffan.scherloff@…]

screendump Xcode

[staffan.scherloff@…]

magics main.log

[staffan.scherloff@…]

The Command Line tools are installed - see enclosure. I have deleted all ports including the directories and made an reinstall of the port package again. Installing magicspp does not work, but all dependencies will compile nicely without any problem. In the log file - also attached - one can see that the installation script apparently can't find the c compiler, although it is installed properly. If the script is working, then please advise how to proceed.

[staffan.scherloff@…]

2nd log file

[staffan.scherloff@…]

At least two dependencies are not resolved when installing magicspp: gcc45 (if this is chosen as variant) and SWIG. Moreover, netCDF does not install properly as netcdfcpp.h can't be found. A workaround for gcc45 was to install the port grads which builds it and SWIG can be installed as a separate port. The last one netcdfcpp.h is apparantly installed with the port netcdf-cxx. After these workarounds the magicspp compiles and installation terminates properly and apparently everything finishes OK. However, the port can not be executed and no logs are available since they are cleaned.

[jmroot (Joshua Root)]

OK, so as Ryan said, we need to see the config.log.

[staffan.scherloff@…]

config.log

[staffan.scherloff@…]

Attached, as requested, config.log.

[jmroot (Joshua Root)]

configure:3703: checking for gcc
configure:3730: result: /opt/local/bin/gcc-mp-4.5
configure:3959: checking for C compiler version
configure:3968: /opt/local/bin/gcc-mp-4.5 --version >&5
./configure: line 3970: /opt/local/bin/gcc-mp-4.5: No such file or directory

So the problem is that the gcc45 variant doesn't add a build dependency on gcc45.

[tenomoto (Takeshi Enomoto)]

Committed in r101134. Thanks.

[tenomoto (Takeshi Enomoto)]

A few more fixes were required. See r101135 and r101136.

[ryandesign (Ryan Carsten Schmidt)]

Actually magicspp is linking with gcc45's libraries, so it needs to be a library dependency.

$ otool -L /opt/local/lib/libMagPlus.dylib | grep gcc45
	/opt/local/lib/gcc45/libgfortran.3.dylib (compatibility version 4.0.0, current version 4.0.0)
	/opt/local/lib/gcc45/libgcc_s.1.dylib (compatibility version 1.0.0, current version 1.0.0)
$ port provides /opt/local/lib/libMagPlus.dylib
/opt/local/lib/libMagPlus.dylib is provided by: magicspp

[tenomoto (Takeshi Enomoto)]

Committed in r101186 and r101187.