From 323549e82f0604400b487ec6cfa5d2640a20b6ee Mon Sep 17 00:00:00 2001
From: Romain Vimont <rom@rom1v.com>
Date: Thu, 12 Feb 2026 20:40:32 +0100
Subject: [PATCH] Prevent build from falling back to system libs

Ensure that if a file or function is not found, the build does not
attempt to use system libraries. Falling back could result in using
libraries that are incompatible due to wrong versions or features.

PR #6671 <https://github.com/Genymobile/scrcpy/pull/6671>
---
 release/build_linux.sh   | 5 ++++-
 release/build_macos.sh   | 5 ++++-
 release/build_windows.sh | 5 ++++-
 3 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/release/build_linux.sh b/release/build_linux.sh
index 6bca6979..e83d355e 100755
--- a/release/build_linux.sh
+++ b/release/build_linux.sh
@@ -22,9 +22,12 @@ app/deps/libusb.sh linux native static
 DEPS_INSTALL_DIR="$PWD/app/deps/work/install/linux-native-static"
 ADB_INSTALL_DIR="$PWD/app/deps/work/install/adb-linux"
 
+# Never fall back to system libs
+unset PKG_CONFIG_PATH
+export PKG_CONFIG_LIBDIR="$DEPS_INSTALL_DIR/lib/pkgconfig"
+
 rm -rf "$LINUX_BUILD_DIR"
 meson setup "$LINUX_BUILD_DIR" \
-    --pkg-config-path="$DEPS_INSTALL_DIR/lib/pkgconfig" \
     -Dc_args="-I$DEPS_INSTALL_DIR/include" \
     -Dc_link_args="-L$DEPS_INSTALL_DIR/lib" \
     --buildtype=release \
diff --git a/release/build_macos.sh b/release/build_macos.sh
index 8f4beb9b..d6f1a56a 100755
--- a/release/build_macos.sh
+++ b/release/build_macos.sh
@@ -22,9 +22,12 @@ app/deps/libusb.sh macos native static
 DEPS_INSTALL_DIR="$PWD/app/deps/work/install/macos-native-static"
 ADB_INSTALL_DIR="$PWD/app/deps/work/install/adb-macos"
 
+# Never fall back to system libs
+unset PKG_CONFIG_PATH
+export PKG_CONFIG_LIBDIR="$DEPS_INSTALL_DIR/lib/pkgconfig"
+
 rm -rf "$MACOS_BUILD_DIR"
 meson setup "$MACOS_BUILD_DIR" \
-    --pkg-config-path="$DEPS_INSTALL_DIR/lib/pkgconfig" \
     -Dc_args="-I$DEPS_INSTALL_DIR/include" \
     -Dc_link_args="-L$DEPS_INSTALL_DIR/lib" \
     --buildtype=release \
diff --git a/release/build_windows.sh b/release/build_windows.sh
index eb821a95..5bf1d67f 100755
--- a/release/build_windows.sh
+++ b/release/build_windows.sh
@@ -29,9 +29,12 @@ app/deps/libusb.sh $WINXX cross shared
 DEPS_INSTALL_DIR="$PWD/app/deps/work/install/$WINXX-cross-shared"
 ADB_INSTALL_DIR="$PWD/app/deps/work/install/adb-windows"
 
+# Never fall back to system libs
+unset PKG_CONFIG_PATH
+export PKG_CONFIG_LIBDIR="$DEPS_INSTALL_DIR/lib/pkgconfig"
+
 rm -rf "$WINXX_BUILD_DIR"
 meson setup "$WINXX_BUILD_DIR" \
-    --pkg-config-path="$DEPS_INSTALL_DIR/lib/pkgconfig" \
     -Dc_args="-I$DEPS_INSTALL_DIR/include" \
     -Dc_link_args="-L$DEPS_INSTALL_DIR/lib" \
     --cross-file=cross_$WINXX.txt \