Compiling Img on macOS M1

[welle ozean]

Hello,

I need some help. I have moved to a macOS M1 machine. So far so good. I have a problem with the Img package, though.

Does somebody know where I can find a binary distribution for this platform?

Or has anybody compiled it from source?

If I try:

./configure --prefix=/Users/dan/Desktop/tcltk/Img-1.4.13/ --with-tcl=/opt/homebrew/Cellar/tcl-tk/8.6.11_1/lib --with-tk=/opt/homebrew/Cellar/tcl-tk/8.6.11_1/lib
make

I get the following:
Undefined symbols for architecture arm64:
"_png_do_expand_palette_rgb8_neon", referenced from:
_png_do_read_transformations in pngrtran.o
"_png_do_expand_palette_rgba8_neon", referenced from:
_png_do_read_transformations in pngrtran.o
"_png_init_filter_functions_neon", referenced from:
_png_read_filter_row in pngrutil.o
"_png_riffle_palette_neon", referenced from:
_png_do_read_transformations in pngrtran.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[1]: *** [libpngtcl1.6.37.dylib] Error 1
make: *** [all] Error 2

[Robert Heller]

I don't know the exact thing, but you I think you need something like the
development files for libpng.

>
>

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[ALX]

Robert Heller schrieb am Samstag, 10. Juli 2021 um 21:00:14 UTC+2:

> > ld: symbol(s) not found for architecture arm64
> > clang: error: linker command failed with exit code 1 (use -v to see invocation)
> > make[1]: *** [libpngtcl1.6.37.dylib] Error 1

There is no arm64 code in the library, so it is not possible to link to it.

[Robert Heller]

Then you will need to build the missing (libpng?) library from source.

Or you might need to get an earlier version of the Img package.