C code structure evokes linking cycles with CMake - c

Question

I am trying to build bozorth3 from NIST Biometric Image Software using CMake but having troubles with the linking. This software has on the one side an executable:
//bin/bozorth3.c:
int min_comp_minutiae = MIN_COMP_BOZORTH_MINUTIAE; // defines what libbozorth needs
//...
getopt_spec = malloc_or_exit( (int)strlen(default_getopt_spec) + 1,
"getopt() string" ); // uses a function from libbozorth
...on the other side a library:
//lib/bozorth3.c:
if ( pstruct->nrows < min_computable_minutiae ) { //uses a variable defined in bin
//lib/bz_alloc.c:
char * malloc_or_exit( int nbytes,
const char * what ) { // implements a function used in bin
//code
}
...and a common header:
//include/bozorth3.h
extern int min_comp_minutiae;
extern char *malloc_or_exit(int, const char *);
With the following filesets (exceprt from CMakeLists.txt)
set(LIB_SOURCE_FILES
src/lib/bozorth3/bozorth3.c
src/lib/bozorth3/bz_alloc.c #[[etc...]])
add_library(libbozorth3 ${LIB_SOURCE_FILES})
add_executable(bozorth3 src/bin/bozorth3/bozorth3.c)
Since the executable uses the library I have to add a link: target_link_libraries(bozorth3 libbozorth3). But this is results in an error:
Linking C shared library ..\..\bin\liblibbozorth3.dll
CMakeFiles\libbozorth3.dir/objects.a(bozorth3.c.obj):bozorth3.c:(.rdata$.refptr.min_computable_minutiae[.refptr.min_computable_minutiae]+0x0): undefined reference to `min_computable_minutiae'
It forces me to create a link vice-versa: target_link_libraries(libbozorth3 bozorth3) and overriding ENABLE_EXPORTS, which of course results in an error as well:
Linking C executable ..\..\bin\bozorth3.exe
CMakeFiles\bozorth3.dir/objects.a(bozorth3.c.obj): In function `main':
D:/git/ba-phmf/NBIS/bozorth3/src/bin/bozorth3/bozorth3.c:174: undefined reference to `malloc_or_exit'
And I cant have both because it obviously results in a cycle:
CMake Error: The inter-target dependency graph contains the following strongly connected component (cycle):
"libbozorth3" of type SHARED_LIBRARY
depends on "bozorth3" (weak)
"bozorth3" of type EXECUTABLE
depends on "libbozorth3" (weak)
At least one of these targets is not a STATIC_LIBRARY. Cyclic dependencies are allowed only among static libraries.
I can compile the package using the original makefiles but need to "translate" it into CMake in order to have integration into my project. I tried to analyze the makefiles but couldn't find a solution. The whole package can be found at github.
I am using CLion 2016.2.3, CMake 3.7.0-rc2, Msys2 20160921 with GCC 6.2.0 and ld 2.27 on Windows 7 Professional N x64

Answer 1

Solved it like this:
add_library(libbozorth3 STATIC ${LIB_SOURCE_FILES})
set_property(TARGET libbozorth3 PROPERTY OUTPUT_NAME bozorth3)
target_include_directories(libbozorth3 PRIVATE
include)
add_executable(bozorth3 ${BIN_SOURCE_FILEs})
target_include_directories(bozorth3 PRIVATE
include)
target_link_libraries(bozorth3
PRIVATE
libbozorth3
commonnbis)