Enhance build-libraries.sh and env.sh for improved toolchain configuration

- Updated build-libraries.sh to set up environment variables for the arm-uclinuxfdpiceabi toolchain, including compiler flags and paths.
- Removed the dependency on env.sh for initial environment setup, simplifying the script logic.
- Streamlined the export and unset of environment variables to ensure a clean build environment.
- Adjusted the handling of CFLAGS and related variables for better clarity and consistency in the build process.

env.sh

@@ -1,58 +1,10 @@
-TOP="$(pwd)"
-TOOLCHAIN_PATH=""
-GLOBAL_MODE=0
-CUSTOM_PATH=""
 
-while [ $# -gt 0 ]; do
-    case "$1" in
-        --global)
-            GLOBAL_MODE=1
-            shift
-            ;;
-        --path)
-            if [ -z "$2" ]; then
-                echo "Ошибка: для --path нужно указать путь"
-                return 1 2>/dev/null || exit 1
-            fi
-            CUSTOM_PATH="$2"
-            shift 2
-            ;;
-        *)
-            shift
-            ;;
-    esac
-done
+TOP=`pwd`
+TARGET=arm-uclinuxfdpiceabi
+CFLAGS_TOOLSET='-O2' 
+CFLAGS_TARGET='-Os -mthumb'
+CFLAGS=$CFLAGS_TOOLSET CFLAGS_FOR_TARGET=$CFLAGS_TARGET CXXFLAGS_FOR_TARGET=$CFLAGS_TARGET
+SUBARCH=armv7-m 
+SUBMODE=thumb 
+PATH=${TOP}/${TARGET}/bin:${PATH}
 
-if [ -n "${CUSTOM_PATH}" ]; then
-    TOOLCHAIN_PATH="${CUSTOM_PATH}"
-elif [ -d "${TOP}/arm-uclinuxfdpiceabi" ]; then
-    TOOLCHAIN_PATH="${TOP}/arm-uclinuxfdpiceabi"
-elif [ -d "${TOP}/build/install" ]; then
-    TOOLCHAIN_PATH="${TOP}/build/install"
-fi
-
-if [ -n "${TOOLCHAIN_PATH}" ] && [ -x "${TOOLCHAIN_PATH}/bin/arm-uclinuxfdpiceabi-gcc" ]; then
-    echo "Найден toolchain: ${TOOLCHAIN_PATH}/bin/arm-uclinuxfdpiceabi-gcc"
-
-    CFLAGS_TOOLSET='-O2'
-    CFLAGS_TARGET='-Os -mthumb'
-    SUBARCH=armv7-m
-    SUBMODE=thumb
-
-    if [ "$GLOBAL_MODE" -eq 1 ]; then
-        export CFLAGS="${CFLAGS_TOOLSET}"
-        export CFLAGS_FOR_TARGET="${CFLAGS_TARGET}"
-        export CXXFLAGS_FOR_TARGET="${CFLAGS_TARGET}"
-        export SUBARCH
-        export SUBMODE
-        export PATH="${TOOLCHAIN_PATH}/bin:${PATH}"
-    else
-        CFLAGS="${CFLAGS_TOOLSET}"
-        CFLAGS_FOR_TARGET="${CFLAGS_TARGET}"
-        CXXFLAGS_FOR_TARGET="${CFLAGS_TARGET}"
-        PATH="${TOOLCHAIN_PATH}/bin:${PATH}"
-    fi
-else
-    echo "Ошибка: не найден ${TOOLCHAIN_PATH}/bin/arm-uclinuxfdpiceabi-gcc"
-    return 1 2>/dev/null || exit 1
-fi