How can I compile 64-bit Mac programs with Free Pascal?
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18-09-2019 - |
Question
I have an x86_64 library on my Mac compiled by GCC, and I want to link it with Pascal code compiled with Free Pascal 2.4. What options do I give to fpc
to make it generate 64-bit code? Without any options, I only get 32-bit .o files.
I'm using the fpc-2.4.0.intel-macosx.dmg download from SourceForge, but when I run fpc -i
, the only target Macintosh platform it lists is "Darwin for i386," although the 2.4 release notes say it can target "64-bit Mac OS X (x86_64/ppc64)."
Solution
According to Jonas Maebe on the fpc-pascal mailing list, there are two options:
- Run
fpc
with the-Px86_64
option. (The-P
option does not appear to be documented yet.) - Run
ppcx64
directly instead offpc
. (Without any options,fpc
runsppc386
instead.)
Both worked for me.
OTHER TIPS
Use -m64
.
Actually, the GNU Pascal documentation does not even state that it is supported on Mac OS X. FreePascal, on the other hand, works on all Mac OS X variants (Intel and PPC, 32 and 64 bits).