Error while building: Makefile:95: *** "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>/devkitpro". Stop.

[yllekz]

Error while building: Makefile:95: *** "Please set DEVKITPRO in your environment. export DEVKITPRO=/devkitpro". Stop.

from sm64-port.

[yllekz]

Figured it out and got a bit further. Please add this to your guide as it's a critical step:

export DEVKITPRO=/opt/devkitpro/
export DEVKITPPC=/opt/devkitpro/devkitPPC

^regarding the second export command. There is a bug in the code where there is an additional forward slash for DEVKITPPC so the export command must omit it at the end until the code is fixed.

Also add in your guide to name the rom file specifically as baserom.us.z64

The build still fails though:

Building tools...
In file included from /usr/include/c++/11/cstdio:41,
                 from armips.cpp:51:
/usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:573:2: warning: #warning "__STRICT_ANSI__ seems to have been undefined; this is not supported" [-Wcpp]
  573 | #warning "__STRICT_ANSI__ seems to have been undefined; this is not supported"
      |  ^~~~~~~
armips.cpp:1273:9: warning: ISO C++ prohibits anonymous structs [-Wpedantic]
 1273 |         {
      |         ^
armips.cpp: In member function ‘wchar_t TextFile::readCharacter()’:
armips.cpp:15054:50: warning: ‘value’ may be used uninitialized in this function [-Wmaybe-uninitialized]
15054 |         if (value == L'\r' && recursion == false && atEnd() == false)
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
In constructor ‘ExpressionValue::ExpressionValue(ExpressionValue&&)’,
    inlined from ‘ExpressionValue ExpressionInternal::evaluate()’ at armips.cpp:18031:10:
armips.cpp:1225:8: warning: ‘val.ExpressionValue::<anonymous>’ may be used uninitialized [-Wmaybe-uninitialized]
 1225 | struct ExpressionValue
      |        ^~~~~~~~~~~~~~~
armips.cpp: In member function ‘ExpressionValue ExpressionInternal::evaluate()’:
armips.cpp:17923:25: note: ‘val’ declared here
17923 |         ExpressionValue val;
      |                         ^~~
In constructor ‘ExpressionValue::ExpressionValue(ExpressionValue&&)’,
    inlined from ‘ExpressionValue Expression::evaluate()’ at armips.cpp:18145:10:
armips.cpp:1225:8: warning: ‘invalid.ExpressionValue::<anonymous>’ may be used uninitialized [-Wmaybe-uninitialized]
 1225 | struct ExpressionValue
      |        ^~~~~~~~~~~~~~~
armips.cpp: In member function ‘ExpressionValue Expression::evaluate()’:
armips.cpp:18144:33: note: ‘invalid’ declared here
18144 |                 ExpressionValue invalid;
      |                                 ^~~~~~~
armips.cpp: In member function ‘bool CDirectiveConditional::evaluate()’:
armips.cpp:9626:33: warning: ‘value’ may be used uninitialized in this function [-Wmaybe-uninitialized]
 9626 |                 return value != 0;
      |                                 ^
armips.cpp: In function ‘std::unique_ptr<CAssemblerCommand> parseDirectiveConditional(Parser&, int)’:
armips.cpp:9600:37: warning: ‘type’ may be used uninitialized in this function [-Wmaybe-uninitialized]
 9600 |         : CDirectiveConditional(type)
      |                                     ^
armips.cpp:11038:23: note: ‘type’ was declared here
11038 |         ConditionType type;
      |                       ^~~~
Building ROM...
Preprocessing level make rules: levels/level_rules.mk -> build/us_wiiu/level_rules.mk
Makefile:102: /opt/devkitpro/devkitPPC//base_tools: No such file or directory
make: *** No rule to make target '/opt/devkitpro/devkitPPC//base_tools'.  Stop.

[yllekz]

Ok so here's the actual, functional instructions, please update your instructions to include all of this:

Credit to this guide: https://youtu.be/hrA8z7Yw02Y

Tested and working on Linux Mint

#Super Mario 64 PC Port - Wii U Installation script for Linux
#https://youtu.be/hrA8z7Yw02Y
#https://github.com/aboood40091/sm64-port
#https://github.com/devkitPro/pacman/releases
sudo apt update
sudo apt install -y git build-essential pkg-config libusb-1.0-0-dev libsdl2-dev curl

cd ~/Downloads
wget https://apt.devkitpro.org/install-devkitpro-pacman
chmod +x ./install-devkitpro-pacman
sudo ./install-devkitpro-pacman
#^Confirm when prompted
sudo dkp-pacman -Sy
sudo dkp-pacman -S devkitPPC wiiload
sudo dkp-pacman -S devkit-env
#^Confirm when prompted
source /etc/profile.d/devkit-env.sh
export DEVKITPRO=/opt/devkitpro
export DEVKITPPC=$DEVKITPRO/devkitPPC
export PATH=$DEVKITPPC/bin:$DEVKITPRO/tools/bin:$PATH
sudo dkp-pacman -Sl | grep wut
sudo dkp-pacman -Sl | grep wiiu
sudo dkp-pacman -S wut-tools wiiu-pkg-config wiiu-sdl2
#^Confirm when prompted

git clone https://github.com/aboood40091/sm64-port "/home/me/Downloads/sm64-port"
# copy baserom.us.z64 into the directory
cp "/path/to/Super Mario 64.z64" "/home/me/Downloads/sm64-port/baserom.us.z64"
cd /home/me/Downloads/sm64-port
make -j4
#Then go to /build/us_wiiu and grab the sm64.us.f3dex2e.rpx file. Copy it to the Wii U SD card into the "apps" folder.

[TH3C4V]

What exactly am I meant to do then to get the "Failed to build tools. Stop." error to go away?