Build GMP on 64bit Windows

Question

I have followed the instruction on the "GMP Install Instruction for Windows Platform". I could build a 32bit version of GMP which can be used for Visual Studio.

./configure --prefix=${gmp-install} --disable-static --enable-shared
make
make install

Then I installed mingw_w64 and msys on another machine (which is running 64bit Windows) and rerun the commands.

./configure was run without any problem. However, when I run "make", I got the following.

m4  -DHAVE_CONFIG_H -D__GMP_WITHIN_GMP -DOPERATION_add_n -DDLL_EXPORT -DPIC add_n.asm >tmp-add_n.s
gcc -std=gnu99 -c -DHAVE_CONFIG_H -I. -I.. -D__GMP_WITHIN_GMP -I.. -DOPERATION_add_n -O2 -pedantic -fomit-frame-pointer -mno-cygwin tmp-add_n.s -DDLL_EXPORT -DPIC -o .libs/add_n.o
tmp-add_n.s: Assembler messages:
tmp-add_n.s:84: Error: operand type mismatch for `push'
tmp-add_n.s:85: Error: operand type mismatch for `push'
tmp-add_n.s:86: Error: operand type mismatch for `push'
tmp-add_n.s:107: Error: operand type mismatch for `jmp'
tmp-add_n.s:114: Error: operand type mismatch for `pop'
tmp-add_n.s:115: Error: operand type mismatch for `pop'
tmp-add_n.s:116: Error: operand type mismatch for `pop'
make[2]: *** [add_n.lo] Error 1
make[2]: Leaving directory `/d/Temp/gmp-5.0.1/mpn'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/d/Temp/gmp-5.0.1'
make: *** [all] Error 2

If I used "gmake" instead, the following error was shown.

m4 gcc  -DHAVE_CONFIG_H -D__GMP_WITHIN_GMP -DOPERATION_add_n -DDLL_EXPORT -DPIC add_n.asm >tmp-add_n.s
m4: gcc: No such file or directory
gmake[2]: *** [add_n.lo] Error 1
gmake[2]: Leaving directory `d:/Temp/gmp-5.0.1/mpn'
gmake[1]: *** [all-recursive] Error 1
gmake[1]: Leaving directory `d:/Temp/gmp-5.0.1'
gmake: *** [all] Error 2

I am not familiar with C++ make. Do I need to specify any flag in order to notify mingw_w64 that I am building for 64bit? Thanks.

Answer 1

For me, gmp was successfully built for x86, and I have had problems building x64. The problem was in the following:

In mpn\fib_table.c:

#if GMP_NUMB_BITS != 32
Error, error, this data is for 32 bits
#endif

while in gmp.h:

#define GMP_LIMB_BITS                      64
#define GMP_NAIL_BITS                      0
#define GMP_NUMB_BITS     (GMP_LIMB_BITS - GMP_NAIL_BITS)

fib_table.c is generated by gen-fix.exe tool, and this tool is generated by make.

So, if one tries to build x64 build after building x86 (like me), it is not enough to run "make clean" first. Delete all "gen-*.exe" files in gmp root folder after running "make clean", this files will be rebuilt properly by make. gmp x64 was successfully build for me after that.

Tested on gmp 6.0.0.