WIP: Use a git submodule for plutovg

[bkmgit]

Partially addresses https://github.com/sammycage/lunasvg/issues/110

Building the examples fails. Error messages:

/usr/bin/ld: ../3rdparty/plutovg/example/libplutovg.a(plutovg.c.o): in function `stbi_write_bmp':
plutovg.c:(.text+0x945): multiple definition of `stbi_write_bmp'; CMakeFiles/svg2png.dir/svg2png.cpp.o:svg2png.cpp:(.text+0x60f): first defined here
/usr/bin/ld: ../3rdparty/plutovg/example/libplutovg.a(plutovg.c.o): in function `stbi_write_tga':
plutovg.c:(.text+0xdd2): multiple definition of `stbi_write_tga'; CMakeFiles/svg2png.dir/svg2png.cpp.o:svg2png.cpp:(.text+0x6bc): first defined here
/usr/bin/ld: ../3rdparty/plutovg/example/libplutovg.a(plutovg.c.o): in function `stbi_write_png':
plutovg.c:(.text+0x3446): multiple definition of `stbi_write_png'; CMakeFiles/svg2png.dir/svg2png.cpp.o:svg2png.cpp:(.text+0x23e8): first defined here
collect2: error: ld returned 1 exit status

Dynamic linking also fails:

[100%] Linking CXX shared library liblunasvg.so
/usr/bin/ld: 3rdparty/plutovg/example/libplutovg.a(plutovg.c.o): relocation R_X86_64_32 against `.rodata' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: 3rdparty/plutovg/example/libplutovg.a(plutovg-blend.c.o): relocation R_X86_64_32S against `.rodata' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: 3rdparty/plutovg/example/libplutovg.a(plutovg-rle.c.o): relocation R_X86_64_32S against `.text' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: 3rdparty/plutovg/example/libplutovg.a(plutovg-font.c.o): relocation R_X86_64_32 against `.rodata' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: 3rdparty/plutovg/example/libplutovg.a(sw_ft_raster.c.o): relocation R_X86_64_32 against `.rodata' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: 3rdparty/plutovg/example/libplutovg.a(sw_ft_stroker.c.o): relocation R_X86_64_32 against `.rodata' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: 3rdparty/plutovg/example/libplutovg.a(sw_ft_math.c.o): relocation R_X86_64_32S against `.rodata' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: 3rdparty/plutovg/example/libplutovg.a(plutovg.c.o): warning: relocation against `stbi__flip_vertically_on_write' in read-only section `.text'
collect2: error: ld returned 1 exit status

Maybe libplutovg can also be compiled as shared library by overriding configuration, as described here

Suggestions for fixing above welcome, but will keep working on them.

[sammycage]

Lemme update plutovg first

[sammycage]

Lemme update plutovg first

[ivantishchenko]

@sammycage

Lemme update plutovg first

Do you have any updates on this? Are there any divergences between 3rdparty/plutovg and the actual plutovg repo? As I understand 3rdparty/plutovg is a superset of the actual plutovg repo, as more features were added.

https://github.com/sammycage/plutovg/issues/31

[sammycage]

@ivantishchenko Well done! I'm kind of busy right now, but I'll let you know when I have time to do so.