gcc, make
Run ./configure You can use --prefx=DIR to specify the output directory, install will install gzinject to DIR/bin, then run make to build the executable, and make install to install it to DIR/bin
By default gzinject will use the crypto library provided by OpenSSL, to disable this and use builtin (slower) crypto functions remove -D_USE_LIBCRYPTO From the make file, and change SRC = gzinject.c to SRC = *.c