add configure_toolchain script

Author: lucarin91

Dockerfile

@@ -96,6 +96,9 @@ RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone &
 # o64-clang -> darwin_amd64
 ENV PATH=/opt/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/bin/:/opt/gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu/bin/:/opt/x86_64-ubuntu16.04-linux-gnu-gcc/bin/:/opt/i686-ubuntu16.04-linux-gnu/bin/:/opt/osxcross/target/bin/:$PATH
 
-WORKDIR /workdir
+COPY ./configure_toolchain.sh /
+RUN chmod +x /configure_toolchain.sh
 
-ENTRYPOINT ["/bin/bash"]
+WORKDIR /workdir
+ENTRYPOINT ["/configure_toolchain.sh"]
+CMD ["bash"]

configure_toolchain.sh

@@ -0,0 +1,47 @@
+#!/bin/bash -e
+
+# Check if the CROSS_COMPILE variable is set
+if [ -z "$CROSS_COMPILE" ]; then
+    echo "Error: CROSS_COMPILE is not set. Please specify the toolchain prefix (e.g., arm-linux-gnueabihf-)."
+    exit 1
+fi
+
+# Detect if the toolchain is osxcross
+if [[ "$CROSS_COMPILE" == *"apple-darwin"* ]]; then
+    # Set osxcross-specific tools
+    export CC="o64-clang"
+    export CXX="o64-clang++"
+else
+    export CC="${CROSS_COMPILE}-gcc"
+    export CXX="${CROSS_COMPILE}-g++"
+fi
+
+# Set default compilation flags
+export AR="${CROSS_COMPILE}-ar"
+export RANLIB="${CROSS_COMPILE}-ranlib"
+export LD="${CROSS_COMPILE}-ld"
+export STRIP="${CROSS_COMPILE}-strip"
+export CFLAGS="-O2"
+export CXXFLAGS="$CFLAGS"
+
+# Add toolchain's lib directory to library paths
+TOOLCHAIN_LIB_DIR="/opt/lib/${CROSS_COMPILE%/}/lib"
+TOOLCHAIN_INCLUDE_DIR="/opt/lib/${CROSS_COMPILE%/}/include"
+export LIBRARY_PATH="$TOOLCHAIN_LIB_DIR:$LIBRARY_PATH"
+export PKG_CONFIG_PATH="$TOOLCHAIN_LIB_DIR/pkgconfig:$PKG_CONFIG_PATH"
+export CPATH="$TOOLCHAIN_INCLUDE_DIR:$CPATH"
+export C_INCLUDE_PATH="$TOOLCHAIN_INCLUDE_DIR:$C_INCLUDE_PATH"
+export CPLUS_INCLUDE_PATH="$TOOLCHAIN_INCLUDE_DIR:$CPLUS_INCLUDE_PATH"
+
+echo "Configured toolchain: $CROSS_COMPILE"
+echo "  CC=$CC, CXX=$CXX, AR=$AR, RANLIB=$RANLIB, LD=$LD, STRIP=$STRIP"
+echo "  CFLAGS=$CFLAGS, CXXFLAGS=$CXXFLAGS, LDFLAGS=$LDFLAGS"
+echo "  LIBRARY_PATH=$LIBRARY_PATH"
+echo "  LD_LIBRARY_PATH=$LD_LIBRARY_PATH"
+echo "  PKG_CONFIG_PATH=$PKG_CONFIG_PATH"
+echo "  CPATH=$CPATH"
+echo "  C_INCLUDE_PATH=$C_INCLUDE_PATH"
+echo "  CPLUS_INCLUDE_PATH=$CPLUS_INCLUDE_PATH"
+
+# Execute the provided command
+exec "$@"