-lcc dynamic missing on latest Mac
Gets Around
8:12:04 PM PDT - Wed, Sep 21st 2016
I rebuilt NWChem on my Mac for the first time in a few months and got an error about -lcc_dynamic not being available.

Anyways, I am running 10.11.6 (El Capitan) with the latest Xcode as of this date (I do not know the version). I compiled with Intel 17.0 compilers, but this shouldn't matter, since they just use the system C library.

Anyways, I am noting this in case others run into the same issue. The fix is trivial, but is listed below for posterity.

src jrhammon$ svn diff config/makefile.h
Index: config/makefile.h
=======================================================
--- config/makefile.h (revision 28547)
+++ config/makefile.h (working copy)
@@ -1015,7 +1015,7 @@
    ifeq ($(_GCC4),Y) 

#      EXTRA_LIBS += 

    else
- EXTRA_LIBS += -lm -lcc_dynamic
+ EXTRA_LIBS += 
    endif

  endif

  endif
@@ -1182,7 +1182,7 @@
    ifeq ($(_GCC4),Y) 

#      EXTRA_LIBS += 

    else
- EXTRA_LIBS += -lm -lcc_dynamic
+ EXTRA_LIBS += 
    endif



# required for mpich2 3.x and clang

Forum Vet
11:23:18 AM PDT - Thu, Sep 22nd 2016
What is the output of the commands

cc -v

cc -dM -E - < /dev/null|egrep __VERSION

on your system?

Thanks

Gets Around
11:45:19 AM PDT - Thu, Sep 22nd 2016 
$ cc -v
Apple LLVM version 7.3.0 (clang-703.0.31)
Target: x86_64-apple-darwin15.6.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin

$ cc -dM -E - < /dev/null|egrep __VERSION
#define __VERSION__ "4.2.1 Compatible Apple LLVM 7.3.0 (clang-703.0.31)"


I don't know if it is relevant, but I had to switch the following recently to address an unrelated issue.
sudo xcode-select -s /Library/Developer/CommandLineTools

Forum Vet
12:02:51 PM PDT - Thu, Sep 22nd 2016
OK
I am still not sure why your environment was triggering the now obsolete lcc_dynamic, but the bit is gone now it can be only explicitly turned by defining USE_CCDYNAMIC

Gets Around
12:10:08 PM PDT - Thu, Sep 22nd 2016
The test that config/makefile.h uses (line 1014) to detect whether it is needed changes behavior from Intel 16 to Intel 17.

$ icc-16.0 -dM -E - < /dev/null | egrep __VERS | cut -c22|awk ' /3/  {print "N";exit}; /2/ {print "N";exit};{print "Y"}'
Y
$ icc-17.0 -dM -E - < /dev/null | egrep __VERS | cut -c22|awk ' /3/  {print "N";exit}; /2/ {print "N";exit};{print "Y"}'
$ 

$ icc-16.0 -dM -E - < /dev/null | egrep __VERS 
#define __VERSION__ "Intel(R) C++ gcc 4.9 mode"
$ icc-17.0 -dM -E - < /dev/null | egrep __VERS 
$


It seems we need to test for Intel 17+ in addition to the _GCC4 test that is there already.


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