make fails on 3d_sample1 about grrlib

[Crayon2000]

Are you using the proper toolchain to build the sample?

I see no problem:

root@ce60341aec94:/workspaces/GRRLIB/examples/3D_sample1# make --version
GNU Make 4.2.1
Built for x86_64-pc-linux-gnu
Copyright (C) 1988-2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
root@ce60341aec94:/workspaces/GRRLIB/examples/3D_sample1# make --trace
Makefile:100: target 'build' does not exist
[ -d build ] || mkdir -p build
make --no-print-directory -C build -f /workspaces/GRRLIB/examples/3D_sample1/Makefile
/opt/devkitpro/devkitPPC/base_rules:17: update target 'main.o' due to: /workspaces/GRRLIB/examples/3D_sample1/source/main.c
echo main.c
main.c
powerpc-eabi-gcc -MMD -MP -MF /workspaces/GRRLIB/examples/3D_sample1/build/main.d -g -O2 -Wall -DGEKKO -mrvl -mcpu=750 -meabi -mhard-float  -I/workspaces/GRRLIB/examples/3D_sample1//include -I/opt/devkitpro/portlibs/wii/include -I/opt/devkitpro/portlibs/ppc/include -I/workspaces/GRRLIB/examples/3D_sample1/build -I/opt/devkitpro/libogc/include -c /workspaces/GRRLIB/examples/3D_sample1/source/main.c -o main.o 
/opt/devkitpro/devkitPPC/base_rules:17: update target 'font.o' due to: /workspaces/GRRLIB/examples/3D_sample1/source/gfx/font.c
echo font.c
font.c
powerpc-eabi-gcc -MMD -MP -MF /workspaces/GRRLIB/examples/3D_sample1/build/font.d -g -O2 -Wall -DGEKKO -mrvl -mcpu=750 -meabi -mhard-float  -I/workspaces/GRRLIB/examples/3D_sample1//include -I/opt/devkitpro/portlibs/wii/include -I/opt/devkitpro/portlibs/ppc/include -I/workspaces/GRRLIB/examples/3D_sample1/build -I/opt/devkitpro/libogc/include -c /workspaces/GRRLIB/examples/3D_sample1/source/gfx/font.c -o font.o 
/opt/devkitpro/devkitPPC/wii_rules:29: update target '/workspaces/GRRLIB/examples/3D_sample1/3D_sample1.elf' due to: main.o font.o
echo linking ... 3D_sample1.elf
linking ... 3D_sample1.elf
powerpc-eabi-gcc  main.o font.o -g -DGEKKO -mrvl -mcpu=750 -meabi -mhard-float -Wl,-Map,3D_sample1.elf.map -L/opt/devkitpro/libogc/lib/wii -L/workspaces/GRRLIB/examples/3D_sample1//lib -L/opt/devkitpro/portlibs/wii/lib -L/opt/devkitpro/portlibs/ppc/lib -lgrrlib -lfreetype -lbz2 -lpngu -lpng -ljpeg -lz -lfat -lwiiuse -lbte -logc -lm -o /workspaces/GRRLIB/examples/3D_sample1/3D_sample1.elf
/opt/devkitpro/devkitPPC/wii_rules:19: update target '/workspaces/GRRLIB/examples/3D_sample1/3D_sample1.dol' due to: /workspaces/GRRLIB/examples/3D_sample1/3D_sample1.elf
echo output ... 3D_sample1.dol
output ... 3D_sample1.dol
elf2dol /workspaces/GRRLIB/examples/3D_sample1/3D_sample1.elf /workspaces/GRRLIB/examples/3D_sample1/3D_sample1.dol

On last commit, everything was built without errors: https://github.com/GRRLIB/GRRLIB/runs/5345626930?check_suite_focus=true