Determining if the function libiconv_open exists in the iconv failed with the following output:
Change Dir: /var/tmp/portage/media-libs/oyranos-0.9.6-r1/work/oyranos-0.9.6_build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/gmake" "cmTC_9ba8c/fast"
/usr/bin/gmake -f CMakeFiles/cmTC_9ba8c.dir/build.make CMakeFiles/cmTC_9ba8c.dir/build
gmake[1]: Entering directory '/var/tmp/portage/media-libs/oyranos-0.9.6-r1/work/oyranos-0.9.6_build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_9ba8c.dir/CheckFunctionExists.c.o
/usr/bin/x86_64-pc-linux-gnu-gcc    -DNDEBUG -O2 -pipe -march=native -fPIC -DCHECK_FUNCTION_EXISTS=libiconv_open   -o CMakeFiles/cmTC_9ba8c.dir/CheckFunctionExists.c.o -c /usr/share/cmake/Modules/CheckFunctionExists.c
Linking C executable cmTC_9ba8c
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_9ba8c.dir/link.txt --verbose=1
/usr/bin/x86_64-pc-linux-gnu-gcc -O2 -pipe -march=native -fPIC -DCHECK_FUNCTION_EXISTS=libiconv_open  -Wl,-O1 -Wl,--as-needed  -rdynamic CMakeFiles/cmTC_9ba8c.dir/CheckFunctionExists.c.o  -o cmTC_9ba8c  -L/var/tmp/portage/media-libs/oyranos-0.9.6-r1/work/oyranos-0.9.6_build/CMakeFiles/CMakeTmp/iconv.h -Wl,-rpath,/var/tmp/portage/media-libs/oyranos-0.9.6-r1/work/oyranos-0.9.6_build/CMakeFiles/CMakeTmp/iconv.h -liconv 
/usr/lib/gcc/x86_64-pc-linux-gnu/8.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -liconv
collect2: error: ld returned 1 exit status
gmake[1]: *** [CMakeFiles/cmTC_9ba8c.dir/build.make:87: cmTC_9ba8c] Error 1
gmake[1]: Leaving directory '/var/tmp/portage/media-libs/oyranos-0.9.6-r1/work/oyranos-0.9.6_build/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:121: cmTC_9ba8c/fast] Error 2


Determining if the function iconv_open exists in the iconv failed with the following output:
Change Dir: /var/tmp/portage/media-libs/oyranos-0.9.6-r1/work/oyranos-0.9.6_build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/gmake" "cmTC_e2c8b/fast"
/usr/bin/gmake -f CMakeFiles/cmTC_e2c8b.dir/build.make CMakeFiles/cmTC_e2c8b.dir/build
gmake[1]: Entering directory '/var/tmp/portage/media-libs/oyranos-0.9.6-r1/work/oyranos-0.9.6_build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_e2c8b.dir/CheckFunctionExists.c.o
/usr/bin/x86_64-pc-linux-gnu-gcc    -DNDEBUG -O2 -pipe -march=native -fPIC -DCHECK_FUNCTION_EXISTS=iconv_open   -o CMakeFiles/cmTC_e2c8b.dir/CheckFunctionExists.c.o -c /usr/share/cmake/Modules/CheckFunctionExists.c
Linking C executable cmTC_e2c8b
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_e2c8b.dir/link.txt --verbose=1
/usr/bin/x86_64-pc-linux-gnu-gcc -O2 -pipe -march=native -fPIC -DCHECK_FUNCTION_EXISTS=iconv_open  -Wl,-O1 -Wl,--as-needed  -rdynamic CMakeFiles/cmTC_e2c8b.dir/CheckFunctionExists.c.o  -o cmTC_e2c8b  -L/var/tmp/portage/media-libs/oyranos-0.9.6-r1/work/oyranos-0.9.6_build/CMakeFiles/CMakeTmp/iconv.h -Wl,-rpath,/var/tmp/portage/media-libs/oyranos-0.9.6-r1/work/oyranos-0.9.6_build/CMakeFiles/CMakeTmp/iconv.h -liconv 
/usr/lib/gcc/x86_64-pc-linux-gnu/8.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -liconv
collect2: error: ld returned 1 exit status
gmake[1]: *** [CMakeFiles/cmTC_e2c8b.dir/build.make:87: cmTC_e2c8b] Error 1
gmake[1]: Leaving directory '/var/tmp/portage/media-libs/oyranos-0.9.6-r1/work/oyranos-0.9.6_build/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:121: cmTC_e2c8b/fast] Error 2