* installing *source* package ‘cplexAPI’ ...
** package ‘cplexAPI’ successfully unpacked and MD5 sums checked
checking for gcc... gcc -arch i386 -std=gnu99
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc -arch i386 -std=gnu99 accepts -g... yes
checking for gcc -arch i386 -std=gnu99 option to accept ISO C89... none needed
checking how to run the C preprocessor... gcc -arch i386 -std=gnu99 -E
checking for cplex... NONE
configure: error: CPLEX interactive optimizer not found
ERROR: configuration failed for package ‘cplexAPI’
* removing ‘/Volumes/XT3/Rdev-web/QA/Simon/packages/leopard-universal/results/2.15/cplexAPI.Rcheck/cplexAPI’