[SOLVED] Weird "undefined reference to" when building pango

coltson · 10-17-2023, 09:02 AM

Hi. I was in the middle of pango's building process when the compilation was interrupted with the following error messages:

Code:

/media/34GB/Arquivos-de-Programas-Linux/Harfbuzz-1.4.2/lib/libharfbuzz.so: undefined reference to `FT_Get_Advance'
/home/leopoldo/Arquivos-de-Programas-Linux/pango-1.41.0/pango/.libs/libpangoft2-1.0.so: undefined reference to `FcWeightFromOpenType'
/media/34GB/Arquivos-de-Programas-Linux/Harfbuzz-1.4.2/lib/libharfbuzz.so: undefined reference to `FT_Reference_Face'
/home/leopoldo/Arquivos-de-Programas-Linux/pango-1.41.0/pango/.libs/libpangoft2-1.0.so: undefined reference to `FT_Face_GetCharVariantIndex'
/home/leopoldo/Arquivos-de-Programas-Linux/pango-1.41.0/pango/.libs/libpangoft2-1.0.so: undefined reference to `FcWeightToOpenType'
collect2: error: ld returned 1 exit status

These kind of errors are caused when the symbol (function, data structure) is not present in the auxiliary library that the program needs. But this does not seem to be the case here.

A quick search shows that

Code:

FT_Get_Advance

,

Code:

FT_Reference_Face

and

Code:

FT_Face_GetCharVariantIndex

are Freetype functions. I proceeded to Freetype's lib dir and issued a

Code:

nm -s libfreetype.so | grep FT_Get_Advance

,

Code:

nm -s libfreetype.so | grep FT_Reference_Face

and

Code:

nm -s libfreetype.so | grep FT_Face_GetCharVariantIndex

The result shows that the three functions are present in libfreetype. I then proceeded to Harfbuzz's lib dir and issued a

Code:

ldd libharfbuzz.so.0

. Which shows:

Code:

libfreetype.so.6 => /media/34GB/Arquivos-de-Programas-Linux/Freetype-2.6.5/lib/libfreetype.so.6 (0x00007f92132e4000)

So no idea why the error. For Harfbuzz I might have a solution, whih would be to simple use an older Freetype. With it, these two error messages are gone

Now to the other error messages...

A quick search shows that

Code:

FcWeightFromOpenType

and

Code:

FcWeightFromOpenType

are all from FontConfig

Repeating the procedures we have:

Code:

nm -s libfontconfig.so | grep FcWeightFromOpenType

Code:

nm -s libfontconfig.so | grep FcWeightToOpenType

that shows both present in libfontconfig.so

Issuing a

Code:

ldd libpangoft2-1.0.so

, shows that it is finding libfontconfig

Code:

libfontconfig.so.1 => /media/34GB/Arquivos-de-Programas-Linux/Fontconfig-2.12.0/lib/libfontconfig.so.1 (0x00007f1d9971c000)

So I am open to suggestions.

business_kid · 10-18-2023, 05:33 AM

On the library errors, "undefined reference to... " errors are always that the libraries involved are not recent enough. Using an earlier Freetype or leter dependency would help.

There's also the question of 32 & 64 bit libs, buut they usually return 'file bot found under ldd