diff --git a/build.sh b/build.sh
new file mode 100644
index 0000000..623113a
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,52 @@
+sudo -i
+dnf install mg
+dnf upgrade
+dnf install @c-development gnat gprbuild gmp-devel mpfr-devel libmpc-devel git
+# you can probably drop privileges here
+export PATH="$HOME/prefix/tools/bin:$HOME/prefix/stage1/bin:$HOME/prefix-$(uname -m)/bin:$PATH"
+wget https://ftpmirror.gnu.org/gnu/binutils/binutils-2.46.0.tar.gz https://ftpmirror.gnu.org/gnu/gcc/gcc-15.2.0/gcc-15.2.0.tar.gz
+git clone https://github.com/Jonimoose/libfxcg --depth=1
+tar xf gcc-15.2.0.tar.gz
+tar xf binutils-2.46.0.tar.gz
+
+cd binutils-2.46.0
+mkdir stage{0,1}
+cd stage0
+../configure --prefix=$HOME/prefix-$(uname -m) --sysconfdir=/etc --enable-ld=default --enable-plugins --enable-shared --disable-werror --enable-64-bit-bfd
+make -j$(nproc) tooldir=$HOME/prefix-$(uname -m)
+make -j$(nproc) check
+make -j install-strip tooldir=$HOME/prefix-$(uname -m)
+
+cd ../../gcc-15.2.0
+mkdir stage{0,1,2}
+sed -ie '/m64=/s/lib64/lib/' gcc/config/i386/t-linux64
+cd stage0
+../configure --prefix=$HOME/prefix-$(uname -m) LD=ld --enable-languages-c,c++,ada --enable-default-pie --enable-default-ssp --enable-host-pie --disable-multilib --disable-fixincludes
+make -j$(nproc)
+sed -i ../gcc/testsuite/gcc.dg/plugin/plugin.exp -e '/cpython/d'
+make -j install-strip
+
+cd ../../binutils-2.46.0/stage1
+../configure --prefix=$HOME/prefix/stage1 --with-sysroot=$HOME/prefix --target=sh3eb-elf --disable-nls --disable-gprofng --disable-werror
+make -j$(nproc)
+make -j install-strip
+../configure --prefix=$HOME/prefix/tools --with-sysroot=$HOME/prefix --target=sh3eb-elf --disable-nls --disable-gprofng --disable-werror
+make -j$(nproc)
+make -j install-strip
+
+cd ../../gcc-15.2.0/stage1
+../configure --target=sh3eb-elf --prefix=$HOME/prefix/stage1 --with-sysroot=$HOME/prefix --with-newlib --without-headers --enable-default-pie --enable-default-ssp --disable-nls --enable-languages=c,c++,ada --disable-libstdcxx --disable-libada --disable-libssp
+make -j$(nproc)
+make -j install-strip
+
+cd ../../libfxcg
+make -j$(nproc) libc/libc.a
+install -Dt $HOME/prefix/lib libc/libc.a libfxcg/libfxcg.a
+mkdir -p $HOME/prefix/include
+cp -r include/* $HOME/prefix/include/
+
+cd ../gcc-15.2.0/stage2
+../configure --target=sh3eb-elf --prefix=$HOME/prefix/tools --with-sysroot=$HOME/prefix --enable-default-pie --disable-nls --enable-languages=c,c++,ada --with-native-system-header-dir=/include --disable-gcov --disable-libada --disable-libstdcxx --disable-libssp
+make -j$(nproc)
+make -j install-strip
+rm -rf $HOME/prefix/stage1
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