mirror of
https://github.com/hrydgard/ppsspp.git
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Henrik RydgårdandClaude Opus 5.5
2e3b844cff
./b.sh --armhf builds headless and the unit tests for 32-bit ARM, which run under qemu-arm the way the loongarch64 and riscv64 builds do. setup-cross.sh learns the target (it also needs an EGL stub), and the docs cover setting it up without root. hash/hash dies with a bus error under qemu-arm on every CPU core, so it goes in a known-failures list for the target. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
124 lines
4.5 KiB
Bash
Executable File
124 lines
4.5 KiB
Bash
Executable File
#!/bin/bash
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# Sets up a cross-compilation environment for one of the headless-only targets.
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# Run once with sudo. After this, ./b.sh --<target> works on a fresh checkout.
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#
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# Usage: sudo cmake/scripts/setup-cross.sh <loongarch64|riscv64|armhf>
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set -e
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TARGET="$1"
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case "$TARGET" in
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loongarch64)
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TRIPLE=loongarch64-linux-gnu
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LD_SO=ld-linux-loongarch-lp64d.so.1
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;;
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riscv64)
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TRIPLE=riscv64-linux-gnu
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LD_SO=ld-linux-riscv64-lp64d.so.1
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;;
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armhf)
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TRIPLE=arm-linux-gnueabihf
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LD_SO=ld-linux-armhf.so.3
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# 32-bit ARM looks for its dynamic linker in /lib, and qemu names it plain arm.
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LD_DIR=/lib
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QEMU=qemu-arm
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# The ARM build links EGL as well as GL.
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NEEDS_EGL=1
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;;
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*)
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echo "Usage: sudo $0 <loongarch64|riscv64|armhf>"
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exit 1
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;;
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esac
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SYSROOT=/usr/$TRIPLE
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CROSS_GCC=$TRIPLE-gcc-14
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LD_DIR=${LD_DIR:-/lib64}
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QEMU=${QEMU:-qemu-$TARGET}
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if ! command -v $CROSS_GCC &>/dev/null; then
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echo "Error: $CROSS_GCC not found. Install it first:"
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echo " sudo apt install gcc-14-$TRIPLE g++-14-$TRIPLE binutils-$TRIPLE"
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exit 1
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fi
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if [ "$(id -u)" -ne 0 ]; then
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echo "This script must be run with sudo."
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exit 1
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fi
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HOST_MULTIARCH=$(gcc -print-multiarch 2>/dev/null || dpkg-architecture -qDEB_HOST_MULTIARCH 2>/dev/null)
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# ── OpenGL headers ───────────────────────────────────────────────────────────
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# GL headers are platform-independent C headers; copy from the host.
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echo "Installing GL headers into sysroot..."
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mkdir -p $SYSROOT/include/GL
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for h in gl.h glext.h glcorearb.h glu.h; do
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[ -f /usr/include/GL/$h ] && cp /usr/include/GL/$h $SYSROOT/include/GL/ && echo " $h"
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done
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# ── GL stub library ──────────────────────────────────────────────────────────
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# Generate a libGL.so for the target that exports all symbols from the host
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# libGL so that GLEW's static archive can be linked via PLT entries (a direct
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# branch to address 0 would overflow the relocation on these targets).
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echo "Generating libGL.so stub..."
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HOST_GL=""
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for candidate in \
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/usr/lib/$HOST_MULTIARCH/libGL.so.1 \
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/usr/lib/$HOST_MULTIARCH/libGL.so \
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/usr/lib/libGL.so.1 ; do
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[ -f "$candidate" ] && HOST_GL="$candidate" && break
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done
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STUB_C=$(mktemp /tmp/gl_stub_XXXXXX.c)
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echo "/* $TARGET GL/GLX stub - for cross-compilation only */" > "$STUB_C"
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echo "void __cross_gl_placeholder(void) {}" >> "$STUB_C"
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if [ -n "$HOST_GL" ]; then
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nm -D "$HOST_GL" 2>/dev/null | awk '/^[0-9a-f]+ T /{ print "void "$3"(void){}" }' >> "$STUB_C"
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echo " Extracted symbols from $HOST_GL"
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fi
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# Always include the minimal set GLEW needs (in case host GL wasn't found)
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for sym in glXGetProcAddressARB glXGetClientString glXQueryVersion \
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glBindTexture glGetString glGetIntegerv glGetError; do
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grep -q "void ${sym}(" "$STUB_C" || echo "void ${sym}(void){}" >> "$STUB_C"
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done
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$CROSS_GCC -shared -fPIC -Wno-implicit-function-declaration \
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-o $SYSROOT/lib/libGL.so "$STUB_C"
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rm "$STUB_C"
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echo " Installed to $SYSROOT/lib/libGL.so"
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if [ -n "$NEEDS_EGL" ]; then
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echo "Generating libEGL.so stub..."
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STUB_C=$(mktemp /tmp/egl_stub_XXXXXX.c)
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echo "/* $TARGET EGL stub - for cross-compilation only */" > "$STUB_C"
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echo "void eglGetProcAddress(void){}" >> "$STUB_C"
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for lib in /usr/lib/$HOST_MULTIARCH/libEGL.so.1 /usr/lib/$HOST_MULTIARCH/libEGL.so; do
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if [ -f "$lib" ]; then
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nm -D "$lib" 2>/dev/null | awk '/^[0-9a-f]+ T /{ print "void "$3"(void){}" }' | grep -v ' eglGetProcAddress(' >> "$STUB_C"
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break
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fi
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done
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$CROSS_GCC -shared -fPIC -o $SYSROOT/lib/libEGL.so "$STUB_C"
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rm "$STUB_C"
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echo " Installed to $SYSROOT/lib/libEGL.so"
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fi
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# ── Dynamic linker symlink ───────────────────────────────────────────────────
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# Without this, binfmt_misc can't find the target's dynamic linker.
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LD_LINUX=$SYSROOT/lib/$LD_SO
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if [ -f "$LD_LINUX" ]; then
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mkdir -p $LD_DIR
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ln -sf "$LD_LINUX" $LD_DIR/$LD_SO
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echo "Created $LD_DIR/$LD_SO -> $LD_LINUX"
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fi
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echo ""
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echo "Setup complete."
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echo "Build: ./b.sh --$TARGET"
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echo "Run: $QEMU -L $SYSROOT <binary>"
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echo " (after setup the $LD_DIR symlink lets you run $TARGET binaries directly)"
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