diff --git a/.github/workflows/c-cpp.yml b/.github/workflows/c-cpp.yml
index ee06d5469..692442a17 100644
--- a/.github/workflows/c-cpp.yml
+++ b/.github/workflows/c-cpp.yml
@@ -15,6 +15,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: install dependencies
+        run: sudo apt update
         run: sudo apt-get install gcc-6 libusb-1.0.0-dev libgtk-3-dev rpm
       - name: make debug
         run: sudo make clean && make debug
@@ -35,6 +36,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: install dependencies
+        run: sudo apt update
         run: sudo apt-get install gcc-6 libusb-1.0.0-dev libgtk-3-dev rpm
       - name: Set compiler flags
         run: |
@@ -60,6 +62,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: install dependencies
+        run: sudo apt update
         run: sudo apt-get install clang-10 libusb-1.0.0-dev libgtk-3-dev rpm
       - name: make debug
         run: sudo make clean && make debug
@@ -80,6 +83,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Install dependencies
+        run: sudo apt update
         run: sudo apt-get install clang-10 libusb-1.0.0-dev libgtk-3-dev rpm
       - name: Set compiler flags
         run: |
@@ -105,6 +109,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Install dependencies
+        run: sudo apt update
         run: sudo apt-get install gcc-10 libusb-1.0.0-dev libgtk-3-dev rpm
       - name: make debug
         run: sudo make clean && make debug
@@ -125,6 +130,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Install dependencies
+        run: sudo apt update
         run: sudo apt-get install gcc-10 libusb-1.0.0-dev libgtk-3-dev rpm
       - name: Set compiler flags
         run: |
@@ -150,6 +156,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Install dependencies
+        run: sudo apt update
         run: sudo apt-get install clang-10 libusb-1.0.0-dev libgtk-3-dev rpm
       - name: make debug
         run: sudo make clean && make debug
@@ -170,6 +177,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Install dependencies
+        run: sudo apt update
         run: sudo apt-get install clang-10 libusb-1.0.0-dev libgtk-3-dev rpm
       - name: Set compiler flags
         run: |
@@ -191,96 +199,6 @@ jobs:
 
   # macOS
 
-  # job_macos_10_14_64_gcc:
-  #   name: macos-10.14 gcc
-  #   runs-on: macos-10.14
-  #   steps:
-  #     - uses: actions/checkout@v2
-  #     - name: Install dependencies
-  #       run: brew install gcc libusb gtk+3
-  #     - name: make debug
-  #       run: sudo make clean && make debug
-  #     - name: make test
-  #       run: sudo make clean && make test
-  #     - name: make release
-  #       run: sudo make clean && make release
-  #     - name: sudo make install
-  #       run: sudo make clean && sudo make install
-  #     - name: sudo make package
-  #       run: sudo make package
-  #     - name: sudo make uninstall
-  #       run: sudo make uninstall && sudo make clean
-
-  # job_macos_10_14_32_gcc:
-  #   name: macos-10.14 gcc 32-bit
-  #   runs-on: macos-10.14
-  #   steps:
-  #     - uses: actions/checkout@v2
-  #     - name: Install dependencies
-  #       run: brew install gcc libusb gtk+3
-  #     - name: Set compiler flags
-  #       run: |
-  #         CFLAGS="$CFLAGS -m32"
-  #         CXXFLAGS="$CXXFLAGS -m32"
-  #         LDFLAGS="$LDFLAGS -m32"
-  #     - name: make debug
-  #       run: sudo make clean && make debug
-  #     - name: make test
-  #       run: sudo make clean && make test
-  #     - name: make release
-  #       run: sudo make clean && make release
-  #     - name: sudo make install
-  #       run: sudo make clean && sudo make install
-  #     - name: sudo make package
-  #       run: sudo make package
-  #     - name: sudo make uninstall
-  #       run: sudo make uninstall && sudo make clean
-
-  # job_macos_10_14_64_clang:
-  #   name: macos-10.14 clang
-  #   runs-on: macos-10.14
-  #   steps:
-  #     - uses: actions/checkout@v2
-  #     - name: Install dependencies
-  #       run: brew install llvm libusb gtk+3
-  #     - name: make debug
-  #       run: sudo make clean && make debug
-  #     - name: make test
-  #       run: sudo make clean && make test
-  #     - name: make release
-  #       run: sudo make clean && make release
-  #     - name: sudo make install
-  #       run: sudo make clean && sudo make install
-  #     - name: sudo make package
-  #       run: sudo make package
-  #     - name: sudo make uninstall
-  #       run: sudo make uninstall && sudo make clean
-
-  # job_macos_10_14_32_clang:
-  #   name: macos-10.14 clang 32-bit
-  #   runs-on: macos-10.14
-  #   steps:
-  #     - uses: actions/checkout@v2
-  #     - name: Install dependencies
-  #       run: brew install llvm libusb gtk+3
-  #     - name: Set compiler flags
-  #       run: |
-  #         CFLAGS="$CFLAGS -m32"
-  #         CXXFLAGS="$CXXFLAGS -m32"
-  #         LDFLAGS="$LDFLAGS -m32"
-  #     - name: make debug
-  #       run: sudo make clean && make debug
-  #     - name: make test
-  #       run: sudo make clean && make test
-  #     - name: make release
-  #       run: sudo make clean && make release
-  #     - name: sudo make install
-  #       run: sudo make clean && sudo make install
-  #     - name: sudo make package
-  #       run: sudo make package
-  #     - name: sudo make uninstall
-  #       run: sudo make uninstall && sudo make clean
-
   job_macos_10_15_gcc:
     name: macos-10.15 gcc
     runs-on: macos-10.15
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 26313ecb5..4e9f41de6 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -35,6 +35,7 @@ jobs:
 
     steps:
       - name: Install dependencies
+        run: sudo apt update
         run: sudo apt-get install gcc-10 libusb-1.0.0-dev libgtk-3-dev rpm
       - name: Checkout repository
         uses: actions/checkout@v2
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5c8aaa60c..efa96759a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,11 +9,6 @@ set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
 
-set(CMAKE_STLINK_ETC_DIR  etc)
-set(CMAKE_ETC_CHIPS_DIR  ${CMAKE_STLINK_ETC_DIR}/stlink/chips)
-set(CMAKE_ETC_CHIPS_DIR_ABS  ${CMAKE_INSTALL_PREFIX}/${CMAKE_ETC_CHIPS_DIR})
-add_definitions( -DETC_STLINK_DIR="${CMAKE_ETC_CHIPS_DIR_ABS}" )
-
 
 ###
 # General project settings
@@ -162,6 +157,15 @@ if (${CMAKE_BUILD_TYPE} MATCHES "Debug")
 endif ()
 
 
+###
+# MCU configuration files
+###
+
+set(CMAKE_ETC_CHIPS_DIR  etc/stlink/chips)
+set(CMAKE_ETC_CHIPS_DIR_ABS  ${CMAKE_INSTALL_PREFIX}/${CMAKE_ETC_CHIPS_DIR})
+add_definitions( -DETC_STLINK_DIR="${CMAKE_ETC_CHIPS_DIR_ABS}" )
+
+
 ###
 # Libraries
 ###
@@ -287,8 +291,9 @@ install(TARGETS st-info DESTINATION ${CMAKE_INSTALL_BINDIR})
 install(TARGETS st-util DESTINATION ${CMAKE_INSTALL_BINDIR})
 install(TARGETS st-trace DESTINATION ${CMAKE_INSTALL_BINDIR})
 
+# Install MCU configuration files
 file(GLOB CHIP_FILES ${CMAKE_SOURCE_DIR}/config/chips/*.chip)
-install(FILES ${CHIP_FILES} DESTINATION ${CMAKE_ETC_CHIPS_DIR})
+install(FILES ${CHIP_FILES} DESTINATION ${CMAKE_INSTALL_PREFIX}/${CMAKE_ETC_CHIPS_DIR})
 
 
 ###
diff --git a/src/common.c b/src/common.c
index 601fac0b6..c40f6aa79 100644
--- a/src/common.c
+++ b/src/common.c
@@ -2199,7 +2199,7 @@ static int map_file(mapped_file_t *mf, const char *path) {
 
   if (sizeof(st.st_size) != sizeof(size_t)) {
     // on 32 bit systems, check if there is an overflow
-    if (st.st_size > (off_t)INT32_MAX) {
+    if (st.st_size > (off_t)SSIZE_MAX) {
       fprintf(stderr, "mmap() size_t overflow for file %s\n", path);
       goto on_error;
     }
@@ -2213,7 +2213,7 @@ static int map_file(mapped_file_t *mf, const char *path) {
     goto on_error;
   }
 
-  mf->len = st.st_size;
+  mf->len = (size_t)st.st_size;
   error = 0; // success
 
 on_error: