c - OpenGL issue: 'incompatible' vs 'cannot find' -


i'm trying a program blender deformation. laptop amd64 , able support i386.

faye@fish:/usr/bin$ dpkg --print-foreign-architectures i386 faye@fish:/usr/bin$ dpkg --print-architecture amd64

i have no experience makefile script. according google search info, made 2 line code additions in makefile.mk.

# -i option compiler finding headers cflags += $(addprefix  -i, $(include_path)) cc=gcc -m32

here issue: when run template opengl code with: 

gcc test.c -lm -lpthread -lglut -lgl -lglu -o test

it seems code , libs work correctly.

however, if same makefile.mk(cc=gcc), gives many errors in following form:

/usr/bin/ld: i386 architecture of input file `../external/lib/libxxxxxxxx.a(xxxxxxxx.o)' incompatible i386:x86-64 output

if use (cc = gcc -m32), error switch to:

/usr/bin/ld: cannot find -lglut /usr/bin/ld: cannot find -lgl /usr/bin/ld: cannot find -lglu

i guess maybe there wrong in 64 bit os running 32 bit application , libs linking?

-m32, when used x86-64 compiler not mean "compile program i386", means "create program x86-64 cpus using instructions operate on 32 bit registers".

what have there binary has been compiled native i386 , try combine program that's compile x86-64 32 bit registers. 2 don't fit together. big question here of course is, why want use i386 binaries @ all. there reasons using 32bit-x86-64 (half size pointers , can massively reduce memory bandwidth), in general want 64 bit binaries. many problems of 32 bit memory management vanish virtue of having vast amounts of address space.


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