I am building a C++ project that uses zlib, and I get this error:

undefined symbol: z_uncompress
undefined symbol: z_compress

I investigated it further, and I’ve found this reference in zconf

#  ifndef Z_SOLO
#    define compress              z_compress
#    define compress2             z_compress2
#    define compressBound         z_compressBound
#  endif

I am not able to locate z_compress or find out why the linker can not find it. Is it in an other library?