Re: where is the MacPorts gcc?
HI Ryan; I'll try to create a MNWE (Minimal Non-Working Example) but it will take some time as I suspect that involves the gsl library. Thanks, Ken W On Sat, May 4, 2024 at 12:22 AM Ryan Schmidt wrote: > > On May 3, 2024, at 23:12, Kenneth Wolcott wrote: > > > > I want to compile some C code using gcc to compare against clang. > > > > This code I want to compile needs gsl/gsl_vector.h so I used -lgsl to > > compile with clang and it complained at runtime: "dyld[16321]: missing > > symbol called". > > Since using gcc on macOS is unusual and possibly fraught with its own unique > problems, and you encounter the issue with clang as well, let's focus on > clang first. > > Can you provide a minimal reproduction recipe? A .c file and the command you > used to compile and link it that demonstrates the problem and that we can try > on our systems? > >
Re: where is the MacPorts gcc?
On May 3, 2024, at 23:12, Kenneth Wolcott wrote: > > I want to compile some C code using gcc to compare against clang. > > This code I want to compile needs gsl/gsl_vector.h so I used -lgsl to > compile with clang and it complained at runtime: "dyld[16321]: missing > symbol called". Since using gcc on macOS is unusual and possibly fraught with its own unique problems, and you encounter the issue with clang as well, let's focus on clang first. Can you provide a minimal reproduction recipe? A .c file and the command you used to compile and link it that demonstrates the problem and that we can try on our systems?
Re: where is the MacPorts gcc?
On May 4, 2024, at 02:06, Eric Gallager wrote: > > `ar` and `nm` are wrappers around the corresponding tools from > binutils/cctools; ar manipulates archives. nm shows you what symbols are in an object file. More about that in their documentation: https://sourceware.org/binutils/docs/binutils/ar.html https://sourceware.org/binutils/docs/binutils/nm.html
Re: where is the MacPorts gcc?
`ar` and `nm` are wrappers around the corresponding tools from binutils/cctools; GCC wraps them for use in its LTO system, I'm pretty sure. You probably want to do `port select gcc` and then choose one of the options available to symlink gcc into place without its suffix. If it's dyld giving you your error, though, switching compilers probably won't help, but I guess you can always try anyways... On Sat, May 4, 2024 at 12:12 AM Kenneth Wolcott wrote: > > I want to compile some C code using gcc to compare against clang. > > This code I want to compile needs gsl/gsl_vector.h so I used -lgsl to > compile with clang and it complained at runtime: "dyld[16321]: missing > symbol called". > > what are "ar" and "nm" in the following? > > I think "mp" means multiple precision... > > find /opt/local/bin -type f -print | grep gcc | grep -v ranlib > /opt/local/bin/arm64-apple-darwin23-gcc-ar-mp-13 > /opt/local/bin/gcc-mp-12 > /opt/local/bin/arm64-apple-darwin23-gcc-ar-mp-12 > /opt/local/bin/gcc-mp-13 > /opt/local/bin/arm64-apple-darwin23-gcc-13.2.0 > /opt/local/bin/gcc-nm-mp-13 > /opt/local/bin/gcc-nm-mp-12 > /opt/local/bin/arm64-apple-darwin23-gcc-mp-12 > /opt/local/bin/arm64-apple-darwin23-gcc-mp-13 > /opt/local/bin/arm64-apple-darwin23-gcc-nm-mp-12 > /opt/local/bin/arm64-apple-darwin23-gcc-nm-mp-13 > /opt/local/bin/gcc-ar-mp-12 > /opt/local/bin/gcc-ar-mp-13 > /opt/local/bin/arm64-apple-darwin23-gcc-12.3.0 > > Thanks, > Ken Wolcott
Re: where is the MacPorts gcc?
On May 3, 2024, at 23:12, Kenneth Wolcott wrote: > > I think "mp" means multiple precision... The "mp" suffix in gcc file names means "MacPorts". This is anachronistic now but it made sense back when gcc was included in Xcode. We wanted the executable "gcc-4.2" to mean Apple's fork of gcc-4.2 from Xcode even if the user had installed the gcc42 port (since Apple's fork supported things most users expected, like support for -arch flags) so we added the "mp" suffix to ours to differentiate them.
