Trying to build Hercules on Ubuntu but get unreferenced errors

[fsword7]

I am trying to build hercules on Ubuntu but got undefined reference errors to dynamic library function calls. Also it warned with RTLD_NOW redefined through each c file. Look results below.

I just run './configure --prefix=/usr/local' then make.

Thanks, Tim

` CC scsiutil.lo In file included from hercules.h:86, from scsiutil.c:9: hdl.h:231: warning: "RTLD_NOW" redefined 231	#define RTLD_NOW 0

In file included from /usr/include/dlfcn.h:27, from hstdinc.h:220, from scsiutil.c:8: /usr/include/x86_64-linux-gnu/bits/dlfcn.h:25: note: this is the location of the previous definition 25	#define RTLD_NOW 0x00002 / Immediate function call binding. /

CCLD libhdt3420_not_mod.la CCLD cckdcdsk /usr/bin/ld: ./.libs/libhercu.so: undefined reference to lt_dlclose' /usr/bin/ld: ./.libs/libhercu.so: undefined reference tolt_dlerror' /usr/bin/ld: ./.libs/libhercu.so: undefined reference to lt_dlopen' /usr/bin/ld: ./.libs/libhercu.so: undefined reference tolt_dlinit' /usr/bin/ld: ./.libs/libhercu.so: undefined reference to lt_dlsym' collect2: error: ld returned 1 exit status make[2]: *** [Makefile:2256: cckdcdsk] Error 1 make[2]: Leaving directory '/home/sword7/Setup/hyperion.vc' make[1]: *** [Makefile:2678: all-recursive] Error 1 make[1]: Leaving directory '/home/sword7/Setup/hyperion.vc' make: *** [Makefile:1999: all] Error 2

[wrljet]

Timothy,

Please run util/bldlvlck and post the output here.

And ensure you have these two packages installed:

sudo apt install libltdl-dev libtool-bin

Bill

[fsword7]

Thanks. I now got it. I will install additional tools. README did not mention that run bldlvlck first before build it. I did not see README.LINUX.md in readme (it does not exist).

Tim

---

This utility will check the level of various utilities needed to build
hercules. Checking is done against versions that are KNOWN to work.
This doesn't mean a build will NOT succeed with older versions
of the utilities, but will give a hint as to what package may need
an upgrade if the build ever fails with some odd reason.

Machine architecture is x86_64

OK  autoconf requires 2.64, found 2.71

OK  automake requires 1.9, found 1.16.5

OK  bash requires 3.2, found 5.2.15

OK  cmake requires 3.2, found 3.27.4

INSTALL flex not found
    URL: http://www.gnu.org/directory/flex.html

INSTALL gawk not found
    URL: http://www.gnu.org/directory/gawk.html

OK  gcc requires 6.2.0, found gcc 13.2.0

OK  grep requires 1, found 3.11

OK  ld requires 2.22, found 2.41

INSTALL libtool not found
    URL: https://sdl-hercules-390.github.io/html/hercinst.html

ltdl.h required include file, NOT found.    URL: https://sdl-hercules-390.github.io/html/hercinst.html

OK  m4 requires 1.4.6, found 1.4.19

OK  make requires 3.79, found 4.3

OK  perl requires 5.6, found 5.36.0

OK  sed requires 3.02, found 4.9

[wrljet]

Everything is explained here: Building Hercules

It lists all the packages required for various different Linux distros (and other OSes).

Bill

[fsword7]

Thanks for info. I succesfully build it into executable. It just warned with some files like that:

  CC       zfcp.lo
In file included from hercules.h:105,
                 from zfcp.c:39:
hinlines.h:342:33: warning: ‘Release_Interrupt_Lock’ is static but used in inline function ‘s370_per1_gra’ which is not static
  342 | #define RELEASE_INTLOCK(r)      Release_Interrupt_Lock( r, PTT_LOC )
      |                                 ^~~~~~~~~~~~~~~~~~~~~~
inline.h:555:5: note: in expansion of macro ‘RELEASE_INTLOCK’
  555 |     RELEASE_INTLOCK( regs );
      |     ^~~~~~~~~~~~~~~
hinlines.h:341:33: warning: ‘Obtain_Interrupt_Lock’ is static but used in inline function ‘s370_per1_gra’ which is not static
  341 | #define OBTAIN_INTLOCK(r)       Obtain_Interrupt_Lock( r, PTT_LOC )
      |                                 ^~~~~~~~~~~~~~~~~~~~~
inline.h:550:5: note: in expansion of macro ‘OBTAIN_INTLOCK’
  550 |     OBTAIN_INTLOCK( regs );
      |     ^~~~~~~~~~~~~~

[wrljet]

Yeah, there's oodles of warnings, depending on what OS, compiler, and compiler version you're using. Those you listed can be ignored.

Bill