mirror of
https://github.com/hrydgard/ppsspp.git
synced 2026-07-11 01:25:07 +02:00
Henrik Rydgård
76 lines
3.1 KiB
Bash
Executable File
76 lines
3.1 KiB
Bash
Executable File
#!/bin/bash
|
|
# Sets up the loongarch64 cross-compilation environment.
|
|
# Run once with sudo. After this, ./b.sh --loongarch64 works on a fresh checkout.
|
|
|
|
set -e
|
|
|
|
SYSROOT=/usr/loongarch64-linux-gnu
|
|
CROSS_GCC=loongarch64-linux-gnu-gcc-14
|
|
|
|
if ! command -v $CROSS_GCC &>/dev/null; then
|
|
echo "Error: $CROSS_GCC not found. Install it first:"
|
|
echo " sudo apt install gcc-14-loongarch64-linux-gnu g++-14-loongarch64-linux-gnu binutils-loongarch64-linux-gnu"
|
|
exit 1
|
|
fi
|
|
|
|
if [ "$(id -u)" -ne 0 ]; then
|
|
echo "This script must be run with sudo."
|
|
exit 1
|
|
fi
|
|
|
|
# ── OpenGL headers ───────────────────────────────────────────────────────────
|
|
# GL headers are platform-independent C headers; copy from the host.
|
|
echo "Installing GL headers into sysroot..."
|
|
mkdir -p $SYSROOT/include/GL
|
|
for h in gl.h glext.h glcorearb.h glu.h; do
|
|
[ -f /usr/include/GL/$h ] && cp /usr/include/GL/$h $SYSROOT/include/GL/ && echo " $h"
|
|
done
|
|
|
|
# ── GL stub library ──────────────────────────────────────────────────────────
|
|
# Generate a loongarch64 libGL.so that exports all symbols from the host
|
|
# libGL so that GLEW's static archive can be linked via PLT entries (a direct
|
|
# B26 branch to address 0 would overflow on LoongArch).
|
|
echo "Generating libGL.so stub..."
|
|
|
|
HOST_GL=""
|
|
for candidate in \
|
|
/usr/lib/x86_64-linux-gnu/libGL.so.1 \
|
|
/usr/lib/x86_64-linux-gnu/libGL.so \
|
|
/usr/lib/libGL.so.1 ; do
|
|
[ -f "$candidate" ] && HOST_GL="$candidate" && break
|
|
done
|
|
|
|
STUB_C=$(mktemp /tmp/gl_stub_XXXXXX.c)
|
|
echo "/* Loongarch64 GL/GLX stub - for cross-compilation only */" > "$STUB_C"
|
|
echo "void __loongarch64_gl_placeholder(void) {}" >> "$STUB_C"
|
|
|
|
if [ -n "$HOST_GL" ]; then
|
|
nm -D "$HOST_GL" 2>/dev/null | awk '/^[0-9a-f]+ T /{ print "void "$3"(void){}" }' >> "$STUB_C"
|
|
echo " Extracted symbols from $HOST_GL"
|
|
fi
|
|
# Always include the minimal set GLEW needs (in case host GL wasn't found)
|
|
for sym in glXGetProcAddressARB glXGetClientString glXQueryVersion \
|
|
glBindTexture glGetString glGetIntegerv glGetError; do
|
|
grep -q "void ${sym}(" "$STUB_C" || echo "void ${sym}(void){}" >> "$STUB_C"
|
|
done
|
|
|
|
$CROSS_GCC -shared -fPIC -Wno-implicit-function-declaration \
|
|
-o $SYSROOT/lib/libGL.so "$STUB_C"
|
|
rm "$STUB_C"
|
|
echo " Installed to $SYSROOT/lib/libGL.so"
|
|
|
|
# ── Dynamic linker symlink ───────────────────────────────────────────────────
|
|
# Without this, binfmt_misc can't find the loongarch64 dynamic linker.
|
|
LD_LINUX=$SYSROOT/lib/ld-linux-loongarch-lp64d.so.1
|
|
if [ -f "$LD_LINUX" ]; then
|
|
mkdir -p /lib64
|
|
ln -sf "$LD_LINUX" /lib64/ld-linux-loongarch-lp64d.so.1
|
|
echo "Created /lib64/ld-linux-loongarch-lp64d.so.1 -> $LD_LINUX"
|
|
fi
|
|
|
|
echo ""
|
|
echo "Setup complete."
|
|
echo "Build: ./b.sh --loongarch64"
|
|
echo "Run: qemu-loongarch64-static -L $SYSROOT <binary>"
|
|
echo " (after setup the /lib64 symlink lets you run loongarch64 binaries directly)"
|