From 8f9dad9dbb340d025a88c58c0f2d4624beadfd6a Mon Sep 17 00:00:00 2001
From: Eric Van Albert <eric@van.al>
Date: Mon, 24 Nov 2025 00:32:48 -0500
Subject: [PATCH] add build script

---
 .github/scripts/build.sh | 104 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100755 .github/scripts/build.sh

diff --git a/.github/scripts/build.sh b/.github/scripts/build.sh
new file mode 100755
index 00000000..378c197a
--- /dev/null
+++ b/.github/scripts/build.sh
@@ -0,0 +1,104 @@
+#!/bin/bash
+set -euo pipefail
+
+# Usage: TARGET=x86_64-pc-windows-gnu ./generate-rustflags.sh
+
+# Set PKG_CONFIG_PATH based on target
+export PKG_CONFIG_PATH="../libmpv-static-build/${TARGET}/output/lib/pkgconfig"
+
+# Get all the static library dependencies
+LIBS=$(pkg-config --static --libs mpv)
+
+# Convert pkg-config output to RUSTFLAGS format
+RUSTFLAGS=""
+
+# Add all library flags, excluding -lpthread and -lstdc++ (we'll handle these separately)
+for flag in $LIBS; do
+  if [[ $flag == -l* ]] || [[ $flag == -L* ]]; then
+    # Skip -lpthread and -lstdc++ since we'll link them statically
+    if [[ $flag != "-lpthread" ]] && [[ $flag != "-lstdc++" ]]; then
+      RUSTFLAGS="$RUSTFLAGS -C link-arg=$flag"
+    fi
+  fi
+done
+
+# Platform-specific linking
+case "$TARGET" in
+  x86_64-pc-windows-gnu)
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-Wl,--allow-multiple-definition"
+    # Wrap all static libraries in a group to resolve circular dependencies
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-Wl,-Bstatic"
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-Wl,--start-group"
+    # Force static linking of libgcc, libgcc_eh, libstdc++, libwinpthread, and libmingw32
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-lmingw32"
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-lwinpthread"
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-lgcc_eh"
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-lgcc"
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-lstdc++"
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-Wl,--end-group"
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-Wl,-Bdynamic"
+    # MinGW runtime libraries (mingwex static, msvcrt uses system default CRT)
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-Wl,--start-group"
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-Wl,-Bstatic"
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-lmingwex"
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-Wl,-Bdynamic"
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-lmsvcrt"
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-Wl,--end-group"
+    # Windows system libraries (dynamically linked)
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-lkernel32"
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-ladvapi32"
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-lshell32"
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-lole32"
+
+    export RUSTFLAGS
+    echo "Generated RUSTFLAGS: $RUSTFLAGS"
+
+    cargo build --release --target "$TARGET"
+    x86_64-w64-mingw32-strip "target/${TARGET}/release/radiance.exe"
+    ;;
+  x86_64-unknown-linux-gnu)
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-Wl,-Bstatic"
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-lstdc++"
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-Wl,-Bdynamic"
+
+    # Populate /tmp/native-lib-pc with fake pkg-config files so we only dynamically link the things we want to
+    rm -rf /tmp/native-lib-pc/
+    mkdir -p /tmp/native-lib-pc/
+
+    cat <<EOF >/tmp/native-lib-pc/mpv.pc
+Name: mpv
+Description: placeholder
+Version: 999
+Cflags: 
+Libs: 
+EOF
+
+    cat <<EOF >/tmp/native-lib-pc/x11.pc
+Name: X11
+Description: placeholder
+Version: 999
+Cflags: 
+Libs: -lX11
+EOF
+
+    cat <<EOF >/tmp/native-lib-pc/alsa.pc
+Name: alsa
+Description: placeholder
+Version: 999
+Cflags: 
+Libs: -lasound
+EOF
+
+    export RUSTFLAGS
+    echo "Generated RUSTFLAGS: $RUSTFLAGS"
+
+    PKG_CONFIG_LIBDIR="/tmp/native-lib-pc/" \
+    PKG_CONFIG_PATH="/tmp/native-lib-pc/" \
+    cargo build --release --target "$TARGET"
+    strip "target/${TARGET}/release/radiance"
+    ;;
+  *)
+    echo "Unknown target: $TARGET" >&2
+    exit 1
+    ;;
+esac