Fresh install of Ubundu 16.04.  Using the instructions on the github website installed the SDK only.  Can't install the drivers because I am running R9 280x and AMD doesn't make drivers for 16.04 for 280x so was going to use the default ones.  I get here and I am stuck.  Any help will be appreciated!

mine@mine:~$ cd silentarmy
mine@mine:~/silentarmy$ make
echo 'const char *ocl_code = R"_mrb_(' >_kernel.h
cpp input.cl >>_kernel.h
echo ')_mrb_";' >>_kernel.h
gcc  -std=gnu99 -pedantic -Wextra -Wall -ggdb -Wno-deprecated-declarations -Wno-overlength-strings -I"/opt/AMDAPPSDK-3.0/include"  -c -o main.o main.c
gcc  -std=gnu99 -pedantic -Wextra -Wall -ggdb -Wno-deprecated-declarations -Wno-overlength-strings -I"/opt/AMDAPPSDK-3.0/include"  -c -o blake.o blake.c
gcc  -std=gnu99 -pedantic -Wextra -Wall -ggdb -Wno-deprecated-declarations -Wno-overlength-strings -I"/opt/AMDAPPSDK-3.0/include"  -c -o sha256.o sha256.c
gcc -o sa-solver main.o blake.o sha256.o -rdynamic -L"/opt/amdgpu-pro/lib/x86_64-linux-gnu" -lOpenCL
/usr/bin/ld: cannot find -lOpenCL
collect2: error: ld returned 1 exit status
Makefile:20: recipe for target 'sa-solver' failed
make: *** [sa-solver] Error 1
mine@mine:~/silentarmy$