Can't build HElib with DEBUG_PRINTOUT macro

[NanXiao]

If use DEBUG_PRINTOUT macro in Makefile, like this:

CFLAGS = -g -O2 -std=c++11 -pthread -DFHE_THREADS -DFHE_DCRT_THREADS -DFHE_BOOT_THREADS -DDEBUG_PRINTOUT

The fhe.a can be built, but when execute make check, the following errors will be generated:

$ make check
HElib requires NTL version 9.4.0 or higher, see http://shoup.net/ntl
If you get compilation errors, try to add/remove -std=c++11 in Makefile

g++ -g -O0 -std=c++11 -pthread -DFHE_THREADS -DFHE_DCRT_THREADS -DFHE_BOOT_THREADS -DDEBUG_PRINTOUT -o Test_General_x Test_General.cpp fhe.a -L/usr/local/lib -lntl -lgmp  -lm
fhe.a(recryption.o): In function `FHEPubKey::reCrypt(Ctxt&)':
/home/xiaonan/Project/HElib/src/recryption.cpp:278: undefined reference to `printFlag'
/home/xiaonan/Project/HElib/src/recryption.cpp:289: undefined reference to `printFlag'
/home/xiaonan/Project/HElib/src/recryption.cpp:300: undefined reference to `printFlag'
/home/xiaonan/Project/HElib/src/recryption.cpp:309: undefined reference to `printFlag'
fhe.a(recryption.o): In function `extractDigitsPacked(Ctxt&, long, long, long, std::vector<NTL::ZZX, std::allocator<NTL::ZZX> > const&)':
/home/xiaonan/Project/HElib/src/recryption.cpp:453: undefined reference to `printFlag'
fhe.a(recryption.o):/home/xiaonan/Project/HElib/src/recryption.cpp:506: more undefined references to `printFlag' follow
collect2: error: ld returned 1 exit status

The reason is printFlag defined in Test_bootstrapping.cpp, and not included in compiling fhe.a.

I think printFlag should be defined in other places, so when compiling fhe.a, it can be found, thanks!

[shaih]

Right, it should be defined in recryption.cpp. I will move it there next time I push some changes.