[postgis-tickets] [PostGIS] #2333: Can't compile under mingw64 (neither mingw64 or mingw32)

[PostGIS]

#2333: Can't compile under mingw64 (neither mingw64 or mingw32)
--------------------+-------------------------------------------------------
 Reporter:  robe    |       Owner:  colivier     
     Type:  defect  |      Status:  new          
 Priority:  medium  |   Milestone:  PostGIS 2.2.0
Component:  sfcgal  |     Version:  trunk        
 Keywords:          |  
--------------------+-------------------------------------------------------

Comment(by robe):

 Bah for some reason I can't submit a ticket to github on SFCGALwith my
 patch.  submit button is disabled.  I could be imagining things.

 Anyrate.  Just tried compiling sfcgal on my mingw-w64 64-bit gcc 4.8.0 and
 ran into same issue during link phase:

 {{{
 Linking CXX shared library libSFCGAL.dll
 c:/ming64gcc48/projects/CGAL/rel-
 mpfr-3.1.2w64gcc48/lib/libmpfr.a(init2.o):init2.c:(.text+0x70): undefined
 reference to `__gmp_get_memory_functions'
 c:/ming64gcc48/projects/CGAL/rel-
 mpfr-3.1.2w64gcc48/lib/libmpfr.a(clear.o):clear.c:(.text+0x1e): undefined
 reference to `__gmp_get_memory_functions'
 c:/ming64gcc48/projects/CGAL/rel-
 mpfr-3.1.2w64gcc48/lib/libmpfr.a(div.o):div.c:(.text+0x234): undefined
 reference to `__gmpn_divrem'
 c:/ming64gcc48/projects/CGAL/rel-
 mpfr-3.1.2w64gcc48/lib/libmpfr.a(round_prec.o):round_prec.c:(.text+0xa76):
 undefined reference to `__gmp_get_memory_functions'
 c:/ming64gcc48/projects/CGAL/rel-
 mpfr-3.1.2w64gcc48/lib/libmpfr.a(mulders.o):mulders.c:(.text+0x5c2):
 undefined reference to `__gmpn_divrem'
 c:/ming64gcc48/projects/CGAL/rel-
 mpfr-3.1.2w64gcc48/lib/libmpfr.a(mulders.o):mulders.c:(.text+0x94c):
 undefined reference to `__gmpn_divrem'
 c:/ming64gcc48/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.8.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
 c:/ming64gcc48/projects/CGAL/rel-
 mpfr-3.1.2w64gcc48/lib/libmpfr.a(mulders.o): bad reloc address 0x0 in
 section `.pdata'
 collect2.exe: error: ld returned 1 exit status
 }}}

 I was able to fix by changing the src/CMakeLists.txt file packaged with
 sfcgal 1.0.4 by swapping the order of MPFR and GMP (basically moving MPFR
 above GMP)

 So changing from

 {{{
 if( ${SFCGAL_WITH_GMP} )
         target_link_libraries( SFCGAL ${GMP_LIBRARIES} )
 endif( ${SFCGAL_WITH_GMP} )
 if( ${SFCGAL_WITH_MPFR} )
         target_link_libraries( SFCGAL ${MPFR_LIBRARIES} )
 endif( ${SFCGAL_WITH_MPFR} )
 }}}


 To:

 {{{
 if( ${SFCGAL_WITH_MPFR} )
         target_link_libraries( SFCGAL ${MPFR_LIBRARIES} )
 endif( ${SFCGAL_WITH_MPFR} )
 if( ${SFCGAL_WITH_GMP} )
         target_link_libraries( SFCGAL ${GMP_LIBRARIES} )
 endif( ${SFCGAL_WITH_GMP} )
 }}}

 I'll close this out once I've successfully posted the issue to github
 sfcgal issue tracker.

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/2333#comment:10>
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