undefined symbol 'png_init_filter_functions_neon' for aarch64 (neon) in static lib

[joshsuihn]

I built libpng-1.6.34 from source and tried to link symbols using static lib, libpng16.a.
I had an error of undefined symbol, 'png_init_filter_functions_neon'.
This symbol is defined in shared lib, but in static lib, it's missing.
Is this known issue, or intended?

$ nm libpng16.so.16.34.0 | grep png_init
000000000002c9c8 t png_init_filter_functions
000000000003ce14 t png_init_filter_functions_neon
0000000000006914 T png_init_io
000000000001baec t png_init_palette_transformations
000000000001bf44 t png_init_read_transformations
000000000001bd40 t png_init_rgb_transformations

$ nm libpng16.a | grep png_init
00000000000010b4 T png_init_io
0000000000001fa4 t png_init_palette_transformations
00000000000023fc T png_init_read_transformations
00000000000021f8 t png_init_rgb_transformations
000000000000741c t png_init_filter_functions
U png_init_filter_functions_neon
U png_init_read_transformations
00000000000002a0 T png_init_filter_functions_neon

[simon987]

Bump

I'm getting the same issue (See microsoft/vcpkg#13395), did you manage to find a fix @joshsuihn ?

[joshpnv]

@simon987 It's already 2 yrs back.. "IF" I recall correctly, I found a fix myself; I had to downgrade libpng version.