* using log directory 'd:/Rcompile/CRANpkg/local/4.0gcc8/Rcplex.Rcheck' * using R version 4.0.0 RC (2020-04-17 r78247) * using platform: x86_64-w64-mingw32 (64-bit) * using session charset: ISO8859-1 * checking for file 'Rcplex/DESCRIPTION' ... OK * this is package 'Rcplex' version '0.3-3' * checking package namespace information ... OK * checking package dependencies ... OK * checking if this is a source package ... OK * checking if there is a namespace ... OK * checking for hidden files and directories ... OK * checking for portable file names ... OK * checking whether package 'Rcplex' can be installed ... ERROR Installation failed. See 'd:/Rcompile/CRANpkg/local/4.0gcc8/Rcplex.Rcheck/00install.out' for details. * DONE The installation logfile: * installing *source* package 'Rcplex' ... ** package 'Rcplex' successfully unpacked and MD5 sums checked ** using staged installation ** libs *** arch - i386 make[1]: Entering directory '/d/temp/Rtmpspy5Hu/R.INSTALL34b5c88e4e91/Rcplex/src-i386' d:/Compiler/rtools40/mingw32/bin/gcc -I"D:/RCompile/recent/R4/include" -DNDEBUG -I"/include" -I"d:/Compiler/gcc-4.9.3/local330/include" -pedantic -O2 -Wall -std=gnu99 -mfpmath=sse -msse2 -mstackrealign -c Rcplex.c -o Rcplex.o In file included from Rcplex.c:2: Rcplex.h:4:10: fatal error: ilcplex/cplex.h: No such file or directory #include ^~~~~~~~~~~~~~~~~ compilation terminated. make[1]: *** [D:/RCompile/recent/R4/etc/i386/Makeconf:217: Rcplex.o] Error 1 make[1]: Leaving directory '/d/temp/Rtmpspy5Hu/R.INSTALL34b5c88e4e91/Rcplex/src-i386' ERROR: compilation failed for package 'Rcplex' * removing 'd:/Rcompile/CRANpkg/lib/4.0gcc8/Rcplex'