$ make CCWRAP_VERBOSE=1
c++wrap -O2 -g -fno-rtti -fno-exceptions -fno-use-cxa-atexit -Wall -Wstrict-aliasing -Wwrite-strings -fno-common -pipe -fbuiltin -fmessage-length=0 -MMD -Werror -fmerge-constants -ftracer -mcmodel=small -c -o _cygwin_crt0_common.o /wip/cygwin/src/winsup/cygwin/lib/_cygwin_crt0_common.cc
+ ccache g++ -L/wip/cygwin/build/x86_64-unknown-cygwin/winsup/cygwin -isystem /wip/cygwin/src/winsup/cygwin/include -B/wip/cygwin/build/x86_64-unknown-cygwin/newlib/ -isystem /wip/cygwin/build/x86_64-unknown-cygwin/newlib/targ-include -isystem /wip/cygwin/src/newlib/libc/include -xc++ -nostdinc -I. -I/wip/cygwin/src/winsup/cygwin -isystem /wip/cygwin/src/winsup/cygwin/include -isystem /wip/cygwin/build/x86_64-unknown-cygwin/newlib/targ-include -isystem /wip/cygwin/src/newlib/libc/include -isystem /wip/cygwin/src/winsup/cygwin/include -isystem /wip/cygwin/build/x86_64-unknown-cygwin/newlib/targ-include -isystem /wip/cygwin/src/newlib/libc/include -isystem /usr/lib/gcc/x86_64-pc-cygwin/5.3.0/include/c++ -isystem /usr/lib/gcc/x86_64-pc-cygwin/5.3.0/include/c++/x86_64-pc-cygwin -isystem /usr/lib/gcc/x86_64-pc-cygwin/5.3.0/include/c++/backward -isystem /usr/lib/gcc/x86_64-pc-cygwin/5.3.0/include -isystem /usr/local/include -isystem /usr/include -isystem /usr/include/w32api -O2 -g -fno-rtti -fno-exceptions -fno-use-cxa-atexit -Wall -Wstrict-aliasing -Wwrite-strings -fno-common -pipe -fbuiltin -fmessage-length=0 -MMD -Werror -fmerge-constants -ftracer -mcmodel=small -c -o _cygwin_crt0_common.o /wip/cygwin/src/winsup/cygwin/lib/_cygwin_crt0_common.cc