CMake: split configuration in two files

The main CMakeLists.txt file in the project's root directory takes
care of the main project settings like project name and version,
handling the options, finding dependencies, etc.

The src/CMakeLists.txt handles options that are necessary to build
libavrdude library and avrdude binary.

.github/workflows/build.yml

@@ -29,9 +29,6 @@ env:
 jobs:
   linux-x86_64:
     runs-on: ubuntu-latest
-    defaults:
-      run:
-        working-directory: ./src
     steps:
       - uses: actions/checkout@v2
       - name: Install prerequisites
@@ -53,9 +50,9 @@ jobs:
           -D HAVE_LINUXGPIO=1
           -D HAVE_LINUXSPI=1
           -D CMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
-          -B ../build
+          -B build
       - name: Build
-        run: cmake --build ../build
+        run: cmake --build build
       - name: Archive build artifacts
         if: always()
         uses: actions/upload-artifact@v2
@@ -70,15 +67,12 @@ jobs:
         with:
           name: avrdude-linux-x86_64
           path: |
-            build/avrdude
+            build/src/avrdude
-            build/avrdude.conf
+            build/src/avrdude.conf
 
   linux:
     runs-on: ubuntu-latest
     container: debian:11
-    defaults:
-      run:
-        working-directory: ./src
     strategy:
       matrix:
         include:
@@ -117,9 +111,9 @@ jobs:
           -D CMAKE_FIND_ROOT_PATH=/usr/${{matrix.prefix}}
           -D CMAKE_INCLUDE_PATH=/usr/include/${{matrix.inc-lib}}
           -D CMAKE_LIBRARY_PATH=/usr/lib/${{matrix.inc-lib}}
-          -B ../build
+          -B build
       - name: Build
-        run: cmake --build ../build
+        run: cmake --build build
       - name: Archive build artifacts
         if: always()
         uses: actions/upload-artifact@v2
@@ -134,14 +128,11 @@ jobs:
         with:
           name: avrdude-linux-${{matrix.processor}}
           path: |
-            build/avrdude
+            build/src/avrdude
-            build/avrdude.conf
+            build/src/avrdude.conf
 
   macos-x86_64:
     runs-on: macos-latest
-    defaults:
-      run:
-        working-directory: ./src
     steps:
       - uses: actions/checkout@v2
       - name: Install prerequisites
@@ -161,9 +152,9 @@ jobs:
           -D CMAKE_EXE_LINKER_FLAGS=-L/usr/local/Cellar
           -D DEBUG_CMAKE=1
           -D CMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
-          -B ../build
+          -B build
       - name: Build
-        run: cmake --build ../build
+        run: cmake --build build
       - name: Archive build artifacts
         if: always()
         uses: actions/upload-artifact@v2
@@ -178,14 +169,11 @@ jobs:
         with:
           name: avrdude-macos-x86_64
           path: |
-            build/avrdude
+            build/src/avrdude
-            build/avrdude.conf
+            build/src/avrdude.conf
 
   msvc:
     runs-on: windows-latest
-    defaults:
-      run:
-        working-directory: ./src
     strategy:
       matrix:
         include:
@@ -212,9 +200,9 @@ jobs:
           -D CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO="/DEBUG /INCREMENTAL:NO /LTCG /OPT:REF /OPT:ICF"
           -D CMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
           -D USE_EXTERNAL=1
-          -B ../build
+          -B build
       - name: Build
-        run: cmake --build ../build --config ${{env.BUILD_TYPE}}
+        run: cmake --build build --config ${{env.BUILD_TYPE}}
       - name: Archive build artifacts
         if: always()
         uses: actions/upload-artifact@v2
@@ -226,23 +214,22 @@ jobs:
             !**/*.obj
       - name: Move executables
         run: |
-          mv ../build/RelWithDebInfo/avrdude.exe ../build
+          mv build/src/RelWithDebInfo/avrdude.exe build/src
-          mv ../build/RelWithDebInfo/avrdude.pdb ../build
+          mv build/src/RelWithDebInfo/avrdude.pdb build/src
       - name: Archive executables
         uses: actions/upload-artifact@v2
         with:
           name: avrdude-msvc-${{matrix.arch}}
           path: |
-            build/avrdude.exe
+            build/src/avrdude.exe
-            build/avrdude.pdb
+            build/src/avrdude.pdb
-            build/avrdude.conf
+            build/src/avrdude.conf
 
   mingw:
     runs-on: windows-latest
     defaults:
       run:
         shell: msys2 {0}
-        working-directory: ./src
     strategy:
       matrix:
         include:
@@ -269,9 +256,9 @@ jobs:
           -G"MSYS Makefiles"
           -D DEBUG_CMAKE=1
           -D CMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
-          -B ../build
+          -B build
       - name: Build
-        run: cmake --build ../build
+        run: cmake --build build
       - name: Archive build artifacts
         if: always()
         uses: actions/upload-artifact@v2
@@ -284,5 +271,5 @@ jobs:
         with:
           name: avrdude-mingw-${{matrix.env}}
           path: |
-            build/avrdude.exe
+            build/src/avrdude.exe
-            build/avrdude.conf
+            build/src/avrdude.conf

CMakeLists.txt

@@ -0,0 +1,394 @@
+#
+# CMakeLists.txt - CMake project for AVRDUDE
+# Copyright (C) 2021 Marius Greuel
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+# Typical usage:
+#     cmake -B build
+#     cmake --build build
+
+cmake_minimum_required(VERSION 3.12)
+project(avrdude VERSION 6.99)
+
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_C_STANDARD_REQUIRED True)
+
+option(BUILD_DOC "Enable building documents" OFF)
+option(HAVE_LINUXGPIO "Enable Linux sysfs GPIO support" OFF)
+option(HAVE_LINUXSPI "Enable Linux SPI support" OFF)
+option(HAVE_PARPORT "Enable parallel port support" OFF)
+option(USE_EXTERNAL "Use external libraries from AVRDUDE GitHub repositories" OFF)
+option(USE_LIBUSBWIN32 "Prefer libusb-win32 over libusb" OFF)
+option(DEBUG_CMAKE "Enable debugging output for this CMake project" OFF)
+option(BUILD_SHARED_LIBS "Build shared libraries" OFF)
+
+include(CheckIncludeFile)
+include(CheckSymbolExists)
+include(FetchContent)
+include(FindPackageMessage)
+include(GNUInstallDirs)
+
+set(CONFIG_DIR "${CMAKE_INSTALL_FULL_SYSCONFDIR}")
+set(AVRDUDE_FULL_VERSION ${CMAKE_PROJECT_VERSION})
+
+# =====================================
+# Get Git commit info
+# =====================================
+
+# GIT_COMMIT_HASH -> hash of latest commit, e.g. b8b859f5
+# GIT_COMMIT_DATE -> date of latest commit, e.g. 20201231
+# GIT_COMMIT_YEAR -> year of latest commit, e.g. 2020
+
+find_package(Git)
+if(Git_FOUND)
+    execute_process(
+        COMMAND "${GIT_EXECUTABLE}" log -1 --format=%h
+        WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}"
+        OUTPUT_VARIABLE GIT_COMMIT_HASH
+        ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE
+        )
+
+    execute_process(
+        COMMAND "${GIT_EXECUTABLE}" log -1 --format=%ad --date=format:%Y%m%d
+        WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}"
+        OUTPUT_VARIABLE GIT_COMMIT_DATE
+        ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE
+        )
+
+    execute_process(
+        COMMAND "${GIT_EXECUTABLE}" log -1 --format=%ad --date=format:%Y
+        WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}"
+        OUTPUT_VARIABLE GIT_COMMIT_YEAR
+        ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE
+        )
+
+    execute_process(
+        COMMAND "${GIT_EXECUTABLE}" log -1 --tags --format=%h
+        WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}"
+        OUTPUT_VARIABLE GIT_TAG_HASH
+        ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE
+        )
+
+    # If the commit is not tagged, include the date and commit hash in the full version string.
+    if(NOT GIT_COMMIT_HASH STREQUAL GIT_TAG_HASH)
+        set(AVRDUDE_FULL_VERSION "${CMAKE_PROJECT_VERSION}-${GIT_COMMIT_DATE} (${GIT_COMMIT_HASH})")
+    endif()
+endif()
+
+find_package(FLEX)
+if(NOT FLEX_FOUND)
+    message(SEND_ERROR "This CMake project requires 'flex', which is not installed on your system." )
+endif()
+
+find_package(BISON QUIET)
+if(BISON_FOUND)
+    find_package_message(BISON "Found BISON: ${BISON_EXECUTABLE} (found version \"${BISON_VERSION}\")" "[${BISON_EXECUTABLE}][${BISON_VERSION}]")
+else()
+    find_program(YACC_EXECUTABLE NAMES yacc byacc DOC "path to the yacc executable")
+    mark_as_advanced(YACC_EXECUTABLE)
+    if(YACC_EXECUTABLE)
+        find_package_message(YACC "Found YACC: ${YACC_EXECUTABLE}" "[${YACC_EXECUTABLE}]")
+    else()
+        message(SEND_ERROR "This CMake project requires 'bison', 'yacc', or 'byacc', which is not installed on your system." )
+    endif()
+endif()
+
+# =====================================
+# Detect installed libraries
+# =====================================
+
+# Prefer static libraries over DLLs on Windows
+if(WIN32)
+    set(PREFERRED_LIBELF libelf.a elf)
+    set(PREFERRED_LIBUSB libusb.a usb)
+    set(PREFERRED_LIBUSB_1_0 libusb-1.0.a usb-1.0)
+    set(PREFERRED_LIBHIDAPI libhidapi.a libhidapi-libusb.a libhidapi-hidraw.a hidapi hidapi-libusb hidapi-hidraw)
+    set(PREFERRED_LIBFTDI libftdi.a ftdi)
+    set(PREFERRED_LIBFTDI1 libftdi1.a ftdi1)
+else()
+    set(PREFERRED_LIBELF elf)
+    set(PREFERRED_LIBUSB usb)
+    set(PREFERRED_LIBUSB_1_0 usb-1.0)
+    set(PREFERRED_LIBHIDAPI hidapi hidapi-libusb hidapi-hidraw)
+    set(PREFERRED_LIBFTDI ftdi)
+    set(PREFERRED_LIBFTDI1 ftdi1)
+endif()
+
+# -------------------------------------
+# Find libelf
+
+find_library(HAVE_LIBELF NAMES ${PREFERRED_LIBELF})
+if(HAVE_LIBELF)
+    set(LIB_LIBELF ${HAVE_LIBELF})
+    check_include_file(libelf.h HAVE_LIBELF_H)
+    check_include_file(libelf/libelf.h HAVE_LIBELF_LIBELF_H)
+endif()
+
+# -------------------------------------
+# Find libusb
+
+find_library(HAVE_LIBUSB NAMES ${PREFERRED_LIBUSB})
+if(HAVE_LIBUSB)
+    set(LIB_LIBUSB ${HAVE_LIBUSB})
+endif()
+
+find_library(HAVE_LIBUSB_1_0 NAMES ${PREFERRED_LIBUSB_1_0})
+if(HAVE_LIBUSB_1_0)
+    set(LIB_LIBUSB_1_0 ${HAVE_LIBUSB_1_0})
+endif()
+
+# FreeBSD's library 'libusb' supports both the libusb-0.1 and libusb-1.0 API.
+if (HAVE_LIBUSB AND CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
+    set(HAVE_LIBUSB_1_0 ${HAVE_LIBUSB})
+endif()
+
+find_library(HAVE_LIBUSB_WIN32 NAMES libusb0.a usb0)
+
+if(HAVE_LIBUSB OR HAVE_LIBUSB_1_0 OR HAVE_LIBUSB_WIN32)
+    check_include_file(usb.h HAVE_USB_H)
+    check_include_file(lusb0_usb.h HAVE_LUSB0_USB_H)
+    check_include_file(libusb.h HAVE_LIBUSB_H)
+    check_include_file(libusb-1.0/libusb.h HAVE_LIBUSB_1_0_LIBUSB_H)
+
+    if((USE_LIBUSBWIN32 OR NOT HAVE_LIBUSB) AND HAVE_LIBUSB_WIN32)
+        set(HAVE_LIBUSB ${HAVE_LIBUSB_WIN32})
+        set(LIB_LIBUSB ${HAVE_LIBUSB_WIN32})
+        unset(HAVE_USB_H CACHE)
+    elseif(NOT HAVE_USB_H)
+        find_path(LIBUSB_COMPAT_DIR libusb-compat/usb.h)
+        if(LIBUSB_COMPAT_DIR)
+            set(LIBUSB_COMPAT_DIR ${LIBUSB_COMPAT_DIR}/libusb-compat)
+            set(HAVE_USB_H 1)
+        else()
+            unset(LIBUSB_COMPAT_DIR CACHE)
+        endif()
+    endif()
+endif()
+
+# -------------------------------------
+# Find libhidapi
+
+find_library(HAVE_LIBHID NAMES hid)
+
+find_library(HAVE_LIBHIDAPI NAMES ${PREFERRED_LIBHIDAPI})
+if(HAVE_LIBHIDAPI)
+    set(LIB_LIBHIDAPI ${HAVE_LIBHIDAPI})
+    check_include_file(hidapi/hidapi.h HAVE_HIDAPI_HIDAPI_H)
+endif()
+
+# -------------------------------------
+# Find libftdi
+
+find_library(HAVE_LIBFTDI NAMES ${PREFERRED_LIBFTDI})
+if(HAVE_LIBFTDI)
+    set(LIB_LIBFTDI ${HAVE_LIBFTDI})
+    set(HAVE_LIBFTDI_TYPE_232H 1)
+endif()
+
+find_library(HAVE_LIBFTDI1 NAMES ${PREFERRED_LIBFTDI1})
+if(HAVE_LIBFTDI1)
+    set(LIB_LIBFTDI1 ${HAVE_LIBFTDI1})
+    set(HAVE_LIBFTDI_TYPE_232H 1)
+    set(CMAKE_REQUIRED_LIBRARIES ${LIB_LIBFTDI1} ${LIB_LIBUSB} ${LIB_LIBUSB_1_0})
+    check_symbol_exists(ftdi_tcioflush "libftdi1/ftdi.h" HAVE_FTDI_TCIOFLUSH)
+endif()
+
+# -------------------------------------
+# Find libreadline
+
+find_library(HAVE_LIBREADLINE NAMES readline)
+if(HAVE_LIBREADLINE)
+    set(LIB_LIBREADLINE ${HAVE_LIBREADLINE})
+endif()
+
+# =====================================
+# Use external libraries if requested
+# =====================================
+
+if(USE_EXTERNAL)
+    FetchContent_Declare(libelf
+        GIT_REPOSITORY https://github.com/avrdudes/libelf.git
+        GIT_TAG e5a39bf19bd6598c42e09172be5a78ceec2a065c
+        )
+
+    FetchContent_Declare(libusb
+        GIT_REPOSITORY https://github.com/avrdudes/libusb.git
+        GIT_TAG 632bc25d04eff563cc00de29435b9a7ed6f4654c
+        )
+
+    FetchContent_Declare(libhidapi
+        GIT_REPOSITORY https://github.com/avrdudes/libhidapi.git
+        GIT_TAG e3700e951f762ef92871ff4fc94586e4d1c042a6
+        )
+
+    FetchContent_Declare(libftdi
+        GIT_REPOSITORY https://github.com/avrdudes/libftdi.git
+        GIT_TAG f3a54da710002a7d25a32a69e667a69ef84cc120
+        )
+
+    message(STATUS "Fetching external libraries, please wait...")
+    FetchContent_MakeAvailable(
+        libelf
+        libusb
+        libhidapi
+        libftdi
+        )
+
+    message(STATUS "Using external library 'libelf'")
+    set(LIB_LIBELF libelf)
+    set(HAVE_LIBELF 1)
+    set(HAVE_LIBELF_H 1)
+
+    message(STATUS "Using external library 'libusb'")
+    set(LIB_LIBUSB libusb)
+    set(HAVE_LIBUSB 1)
+    set(HAVE_LUSB0_USB_H 1)
+
+    message(STATUS "Using external library 'libhidapi'")
+    set(LIB_LIBHIDAPI libhidapi)
+    set(HAVE_LIBHIDAPI 1)
+    set(HAVE_HIDAPI_HIDAPI_H 1)
+
+    message(STATUS "Using external library 'libftdi'")
+    set(LIB_LIBFTDI libftdi)
+    set(HAVE_LIBFTDI 1)
+    set(HAVE_LIBFTDI_TYPE_232H 1)
+endif()
+
+add_subdirectory(src)
+
+# =====================================
+# Setup default port names
+# =====================================
+
+if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
+    set(DEFAULT_PAR_PORT "/dev/parport0")
+    set(DEFAULT_SER_PORT "/dev/ttyS0")
+elseif (CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
+    set(DEFAULT_PAR_PORT "/dev/ppi0")
+    set(DEFAULT_SER_PORT "/dev/cuad0")
+elseif (CMAKE_SYSTEM_NAME STREQUAL "Solaris")
+    set(DEFAULT_PAR_PORT "/dev/printers/0")
+    set(DEFAULT_SER_PORT "/dev/term/a")
+elseif (CMAKE_SYSTEM_NAME STREQUAL "Windows")
+    set(DEFAULT_PAR_PORT "lpt1")
+    set(DEFAULT_SER_PORT "com1")
+else()
+    set(DEFAULT_PAR_PORT "unknown")
+    set(DEFAULT_SER_PORT "unknown")
+endif()
+
+# =====================================
+# Configuration
+# =====================================
+
+message(STATUS "Configuration summary:")
+message(STATUS "----------------------")
+
+if (DEBUG_CMAKE)
+    message(STATUS "CMAKE_HOST_SYSTEM: ${CMAKE_HOST_SYSTEM}")
+    message(STATUS "CMAKE_SYSTEM: ${CMAKE_SYSTEM}")
+    message(STATUS "CMAKE_FIND_ROOT_PATH: ${CMAKE_FIND_ROOT_PATH}")
+    message(STATUS "CMAKE_C_COMPILER: ${CMAKE_C_COMPILER}")
+    message(STATUS "CONFIG_DIR: ${CONFIG_DIR}")
+    message(STATUS "AVRDUDE_FULL_VERSION: ${AVRDUDE_FULL_VERSION}")
+    message(STATUS "USE_EXTERNAL: ${USE_EXTERNAL}")
+    message(STATUS "USE_LIBUSBWIN32: ${USE_LIBUSBWIN32}")
+    message(STATUS "HAVE_LIBELF: ${HAVE_LIBELF}")
+    message(STATUS "HAVE_LIBUSB: ${HAVE_LIBUSB}")
+    message(STATUS "HAVE_LIBUSB_1_0: ${HAVE_LIBUSB_1_0}")
+    message(STATUS "HAVE_LIBUSB_WIN32: ${HAVE_LIBUSB_WIN32}")
+    message(STATUS "HAVE_LIBHID: ${HAVE_LIBHID}")
+    message(STATUS "HAVE_LIBHIDAPI: ${HAVE_LIBHIDAPI}")
+    message(STATUS "HAVE_LIBFTDI: ${HAVE_LIBFTDI}")
+    message(STATUS "HAVE_LIBFTDI1: ${HAVE_LIBFTDI1}")
+    message(STATUS "HAVE_LIBREADLINE: ${HAVE_LIBREADLINE}")
+    message(STATUS "HAVE_LIBELF_H: ${HAVE_LIBELF_H}")
+    message(STATUS "HAVE_LIBELF_LIBELF_H: ${HAVE_LIBELF_LIBELF_H}")
+    message(STATUS "HAVE_USB_H: ${HAVE_USB_H}")
+    message(STATUS "HAVE_LUSB0_USB_H: ${HAVE_LUSB0_USB_H}")
+    message(STATUS "HAVE_LIBUSB_H: ${HAVE_LIBUSB_H}")
+    message(STATUS "HAVE_LIBUSB_1_0_LIBUSB_H: ${HAVE_LIBUSB_1_0_LIBUSB_H}")
+    message(STATUS "HAVE_HIDAPI_HIDAPI_H: ${HAVE_HIDAPI_HIDAPI_H}")
+    message(STATUS "LIBUSB_COMPAT_DIR: ${LIBUSB_COMPAT_DIR}")
+    message(STATUS "----------------------")
+endif()
+
+if(HAVE_LIBELF)
+    message(STATUS "DO HAVE    libelf")
+else()
+    message(STATUS "DON'T HAVE libelf")
+endif()
+
+if(HAVE_LIBUSB)
+    message(STATUS "DO HAVE    libusb")
+else()
+    message(STATUS "DON'T HAVE libusb")
+endif()
+
+if(HAVE_LIBUSB_1_0)
+    message(STATUS "DO HAVE    libusb_1_0")
+else()
+    message(STATUS "DON'T HAVE libusb_1_0")
+endif()
+
+if(HAVE_LIBHIDAPI)
+    message(STATUS "DO HAVE    libhidapi")
+else()
+    message(STATUS "DON'T HAVE libhidapi")
+endif()
+
+if(HAVE_LIBFTDI)
+    if(HAVE_LIBFTDI1)
+        message(STATUS "DO HAVE    libftdi (but prefer to use libftdi1)")
+    else()
+        message(STATUS "DO HAVE    libftdi")
+    endif()
+else()
+    message(STATUS "DON'T HAVE libftdi")
+endif()
+
+if(HAVE_LIBFTDI1)
+    message(STATUS "DO HAVE    libftdi1")
+else()
+    message(STATUS "DON'T HAVE libftdi1")
+endif()
+
+if(BUILD_DOC)
+	message(STATUS "ENABLED    doc")
+else()
+	message(STATUS "DISABLED   doc")
+endif()
+
+if(HAVE_PARPORT)
+    message(STATUS "ENABLED    parport")
+else()
+    message(STATUS "DISABLED   parport")
+endif()
+
+if(HAVE_LINUXGPIO)
+    message(STATUS "ENABLED    linuxgpio")
+else()
+    message(STATUS "DISABLED   linuxgpio")
+endif()
+
+if(HAVE_LINUXSPI)
+    message(STATUS "ENABLED    linuxspi")
+else()
+    message(STATUS "DISABLED   linuxspi")
+endif()
+
+message(STATUS "----------------------")

src/CMakeLists.txt

@@ -16,102 +16,23 @@
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
 
-# Typical usage:
-#     cmake -B build
-#     cmake --build build
-
-cmake_minimum_required(VERSION 3.12)
-project(avrdude VERSION 6.99)
-
-set(CMAKE_C_STANDARD 11)
-set(CMAKE_C_STANDARD_REQUIRED True)
-
-option(BUILD_DOC "Enable building documents" OFF)
-option(HAVE_LINUXGPIO "Enable Linux sysfs GPIO support" OFF)
-option(HAVE_LINUXSPI "Enable Linux SPI support" OFF)
-option(HAVE_PARPORT "Enable parallel port support" OFF)
-option(USE_EXTERNAL "Use external libraries from AVRDUDE GitHub repositories" OFF)
-option(USE_LIBUSBWIN32 "Prefer libusb-win32 over libusb" OFF)
-option(DEBUG_CMAKE "Enable debugging output for this CMake project" OFF)
-option(BUILD_SHARED_LIBS "Build shared libraries" OFF)
-
-include(CheckIncludeFile)
-include(CheckSymbolExists)
-include(FetchContent)
-include(FindPackageMessage)
-include(GNUInstallDirs)
-
-set(CONFIG_DIR "${CMAKE_INSTALL_FULL_SYSCONFDIR}")
-set(AVRDUDE_FULL_VERSION ${CMAKE_PROJECT_VERSION})
-
 # =====================================
-# Get Git commit info
+# Set up flex target
 # =====================================
 
-# GIT_COMMIT_HASH -> hash of latest commit, e.g. b8b859f5
+FLEX_TARGET(Parser "lexer.l" "${PROJECT_BINARY_DIR}/lexer.c")
-# GIT_COMMIT_DATE -> date of latest commit, e.g. 20201231
-# GIT_COMMIT_YEAR -> year of latest commit, e.g. 2020
-
-find_package(Git)
-if(Git_FOUND)
-    execute_process(
-        COMMAND "${GIT_EXECUTABLE}" log -1 --format=%h
-        WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}"
-        OUTPUT_VARIABLE GIT_COMMIT_HASH
-        ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE
-        )
-
-    execute_process(
-        COMMAND "${GIT_EXECUTABLE}" log -1 --format=%ad --date=format:%Y%m%d
-        WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}"
-        OUTPUT_VARIABLE GIT_COMMIT_DATE
-        ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE
-        )
-
-    execute_process(
-        COMMAND "${GIT_EXECUTABLE}" log -1 --format=%ad --date=format:%Y
-        WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}"
-        OUTPUT_VARIABLE GIT_COMMIT_YEAR
-        ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE
-        )
-
-    execute_process(
-        COMMAND "${GIT_EXECUTABLE}" log -1 --tags --format=%h
-        WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}"
-        OUTPUT_VARIABLE GIT_TAG_HASH
-        ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE
-        )
-
-    # If the commit is not tagged, include the date and commit hash in the full version string.
-    if(NOT GIT_COMMIT_HASH STREQUAL GIT_TAG_HASH)
-        set(AVRDUDE_FULL_VERSION "${CMAKE_PROJECT_VERSION}-${GIT_COMMIT_DATE} (${GIT_COMMIT_HASH})")
-    endif()
-endif()
-
-# =====================================
-# Detect flex and yacc/bison
-# =====================================
-
-find_package(FLEX)
-if(FLEX_FOUND)
-    FLEX_TARGET(Parser lexer.l "${PROJECT_BINARY_DIR}/lexer.c")
 
 if (FLEX_VERSION VERSION_GREATER_EQUAL 2.5.9)
     set(HAVE_YYLEX_DESTROY 1)
 endif()
-else()
-    message(SEND_ERROR "This CMake project requires 'flex', which is not installed on your system." )
-endif()
 
-find_package(BISON QUIET)
+# =====================================
+# Set up yacc/bison target
+# =====================================
+
 if(BISON_FOUND)
-    find_package_message(BISON "Found BISON: ${BISON_EXECUTABLE} (found version \"${BISON_VERSION}\")" "[${BISON_EXECUTABLE}][${BISON_VERSION}]")
     BISON_TARGET(Parser config_gram.y "${PROJECT_BINARY_DIR}/config_gram.c" DEFINES_FILE "${PROJECT_BINARY_DIR}/config_gram.h")
 else()
-    find_program(YACC_EXECUTABLE NAMES yacc byacc DOC "path to the yacc executable")
-    mark_as_advanced(YACC_EXECUTABLE)
-    if(YACC_EXECUTABLE)
-        find_package_message(YACC "Found YACC: ${YACC_EXECUTABLE}" "[${YACC_EXECUTABLE}]")
     set(YACC_TARGET_outputs "${PROJECT_BINARY_DIR}/config_gram.c")
     add_custom_command(OUTPUT ${YACC_TARGET_outputs}
         COMMAND ${YACC_EXECUTABLE} -d -o ${YACC_TARGET_outputs} config_gram.y
@@ -120,181 +41,17 @@ else()
         WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
         )
     set(BISON_Parser_OUTPUTS ${YACC_TARGET_outputs})
-    else()
-        message(SEND_ERROR "This CMake project requires 'bison', 'yacc', or 'byacc', which is not installed on your system." )
-    endif()
-endif()
-
-# =====================================
-# Detect installed libraries
-# =====================================
-
-# Prefer static libraries over DLLs on Windows
-if(WIN32)
-    set(PREFERRED_LIBELF libelf.a elf)
-    set(PREFERRED_LIBUSB libusb.a usb)
-    set(PREFERRED_LIBUSB_1_0 libusb-1.0.a usb-1.0)
-    set(PREFERRED_LIBHIDAPI libhidapi.a libhidapi-libusb.a libhidapi-hidraw.a hidapi hidapi-libusb hidapi-hidraw)
-    set(PREFERRED_LIBFTDI libftdi.a ftdi)
-    set(PREFERRED_LIBFTDI1 libftdi1.a ftdi1)
-else()
-    set(PREFERRED_LIBELF elf)
-    set(PREFERRED_LIBUSB usb)
-    set(PREFERRED_LIBUSB_1_0 usb-1.0)
-    set(PREFERRED_LIBHIDAPI hidapi hidapi-libusb hidapi-hidraw)
-    set(PREFERRED_LIBFTDI ftdi)
-    set(PREFERRED_LIBFTDI1 ftdi1)
-endif()
-
-# -------------------------------------
-# Find libelf
-
-find_library(HAVE_LIBELF NAMES ${PREFERRED_LIBELF})
-if(HAVE_LIBELF)
-    set(LIB_LIBELF ${HAVE_LIBELF})
-    check_include_file(libelf.h HAVE_LIBELF_H)
-    check_include_file(libelf/libelf.h HAVE_LIBELF_LIBELF_H)
-endif()
-
-# -------------------------------------
-# Find libusb
-
-find_library(HAVE_LIBUSB NAMES ${PREFERRED_LIBUSB})
-if(HAVE_LIBUSB)
-    set(LIB_LIBUSB ${HAVE_LIBUSB})
-endif()
-
-find_library(HAVE_LIBUSB_1_0 NAMES ${PREFERRED_LIBUSB_1_0})
-if(HAVE_LIBUSB_1_0)
-    set(LIB_LIBUSB_1_0 ${HAVE_LIBUSB_1_0})
-endif()
-
-# FreeBSD's library 'libusb' supports both the libusb-0.1 and libusb-1.0 API.
-if (HAVE_LIBUSB AND CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
-    set(HAVE_LIBUSB_1_0 ${HAVE_LIBUSB})
-endif()
-
-find_library(HAVE_LIBUSB_WIN32 NAMES libusb0.a usb0)
-
-if(HAVE_LIBUSB OR HAVE_LIBUSB_1_0 OR HAVE_LIBUSB_WIN32)
-    check_include_file(usb.h HAVE_USB_H)
-    check_include_file(lusb0_usb.h HAVE_LUSB0_USB_H)
-    check_include_file(libusb.h HAVE_LIBUSB_H)
-    check_include_file(libusb-1.0/libusb.h HAVE_LIBUSB_1_0_LIBUSB_H)
-
-    if((USE_LIBUSBWIN32 OR NOT HAVE_LIBUSB) AND HAVE_LIBUSB_WIN32)
-        set(HAVE_LIBUSB ${HAVE_LIBUSB_WIN32})
-        set(LIB_LIBUSB ${HAVE_LIBUSB_WIN32})
-        unset(HAVE_USB_H CACHE)
-    elseif(NOT HAVE_USB_H)
-        find_path(LIBUSB_COMPAT_DIR libusb-compat/usb.h)
-        if(LIBUSB_COMPAT_DIR)
-            set(LIBUSB_COMPAT_DIR ${LIBUSB_COMPAT_DIR}/libusb-compat)
-            set(HAVE_USB_H 1)
-        else()
-            unset(LIBUSB_COMPAT_DIR CACHE)
-        endif()
-    endif()
-endif()
-
-# -------------------------------------
-# Find libhidapi
-
-find_library(HAVE_LIBHID NAMES hid)
-
-find_library(HAVE_LIBHIDAPI NAMES ${PREFERRED_LIBHIDAPI})
-if(HAVE_LIBHIDAPI)
-    set(LIB_LIBHIDAPI ${HAVE_LIBHIDAPI})
-    check_include_file(hidapi/hidapi.h HAVE_HIDAPI_HIDAPI_H)
-endif()
-
-# -------------------------------------
-# Find libftdi
-
-find_library(HAVE_LIBFTDI NAMES ${PREFERRED_LIBFTDI})
-if(HAVE_LIBFTDI)
-    set(LIB_LIBFTDI ${HAVE_LIBFTDI})
-    set(HAVE_LIBFTDI_TYPE_232H 1)
-endif()
-
-find_library(HAVE_LIBFTDI1 NAMES ${PREFERRED_LIBFTDI1})
-if(HAVE_LIBFTDI1)
-    set(LIB_LIBFTDI1 ${HAVE_LIBFTDI1})
-    set(HAVE_LIBFTDI_TYPE_232H 1)
-    set(CMAKE_REQUIRED_LIBRARIES ${LIB_LIBFTDI1} ${LIB_LIBUSB} ${LIB_LIBUSB_1_0})
-    check_symbol_exists(ftdi_tcioflush "libftdi1/ftdi.h" HAVE_FTDI_TCIOFLUSH)
-endif()
-
-# -------------------------------------
-# Find libreadline
-
-find_library(HAVE_LIBREADLINE NAMES readline)
-if(HAVE_LIBREADLINE)
-    set(LIB_LIBREADLINE ${HAVE_LIBREADLINE})
-endif()
-
-# =====================================
-# Use external libraries if requested
-# =====================================
-
-if(USE_EXTERNAL)
-    FetchContent_Declare(libelf
-        GIT_REPOSITORY https://github.com/avrdudes/libelf.git
-        GIT_TAG e5a39bf19bd6598c42e09172be5a78ceec2a065c
-        )
-
-    FetchContent_Declare(libusb
-        GIT_REPOSITORY https://github.com/avrdudes/libusb.git
-        GIT_TAG 632bc25d04eff563cc00de29435b9a7ed6f4654c
-        )
-
-    FetchContent_Declare(libhidapi
-        GIT_REPOSITORY https://github.com/avrdudes/libhidapi.git
-        GIT_TAG e3700e951f762ef92871ff4fc94586e4d1c042a6
-        )
-
-    FetchContent_Declare(libftdi
-        GIT_REPOSITORY https://github.com/avrdudes/libftdi.git
-        GIT_TAG f3a54da710002a7d25a32a69e667a69ef84cc120
-        )
-
-    message(STATUS "Fetching external libraries, please wait...")
-    FetchContent_MakeAvailable(
-        libelf
-        libusb
-        libhidapi
-        libftdi
-        )
-
-    message(STATUS "Using external library 'libelf'")
-    set(LIB_LIBELF libelf)
-    set(HAVE_LIBELF 1)
-    set(HAVE_LIBELF_H 1)
-
-    message(STATUS "Using external library 'libusb'")
-    set(LIB_LIBUSB libusb)
-    set(HAVE_LIBUSB 1)
-    set(HAVE_LUSB0_USB_H 1)
-
-    message(STATUS "Using external library 'libhidapi'")
-    set(LIB_LIBHIDAPI libhidapi)
-    set(HAVE_LIBHIDAPI 1)
-    set(HAVE_HIDAPI_HIDAPI_H 1)
-
-    message(STATUS "Using external library 'libftdi'")
-    set(LIB_LIBFTDI libftdi)
-    set(HAVE_LIBFTDI 1)
-    set(HAVE_LIBFTDI_TYPE_232H 1)
 endif()
 
 # =====================================
 # Setup target specific options
 # =====================================
 
+include_directories(BEFORE ${CMAKE_CURRENT_BINARY_DIR})
 add_compile_definitions(CONFIG_DIR=\"${CONFIG_DIR}\")
 
 if(WIN32)
-    set(EXTRA_WINDOWS_SOURCES "${PROJECT_BINARY_DIR}/windows.rc")
+    set(EXTRA_WINDOWS_SOURCES "${PROJECT_BINARY_DIR}/src/windows.rc")
     set(EXTRA_WINDOWS_LIBRARIES setupapi ws2_32)
 endif()
 
@@ -315,139 +72,15 @@ if(MSVC)
     add_compile_options(/wd6255) # warning C6255: _alloca indicates failure by raising a stack overflow exception. Consider using _malloca instead
 
     set(EXTRA_WINDOWS_SOURCES ${EXTRA_WINDOWS_SOURCES}
-        "${PROJECT_SOURCE_DIR}/msvc/getopt.c"
+        "msvc/getopt.c"
-        "${PROJECT_SOURCE_DIR}/msvc/gettimeofday.c"
+        "msvc/gettimeofday.c"
-        "${PROJECT_SOURCE_DIR}/msvc/usleep.cpp"
+        "msvc/usleep.cpp"
         )
     set(EXTRA_WINDOWS_INCLUDES ${EXTRA_WINDOWS_INCLUDES}
-        "${PROJECT_SOURCE_DIR}/msvc"
+        "msvc"
-        "${PROJECT_SOURCE_DIR}/msvc/generated"
         )
 endif()
 
-# =====================================
-# Setup default port names
-# =====================================
-
-if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
-    set(DEFAULT_PAR_PORT "/dev/parport0")
-    set(DEFAULT_SER_PORT "/dev/ttyS0")
-elseif (CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
-    set(DEFAULT_PAR_PORT "/dev/ppi0")
-    set(DEFAULT_SER_PORT "/dev/cuad0")
-elseif (CMAKE_SYSTEM_NAME STREQUAL "Solaris")
-    set(DEFAULT_PAR_PORT "/dev/printers/0")
-    set(DEFAULT_SER_PORT "/dev/term/a")
-elseif (CMAKE_SYSTEM_NAME STREQUAL "Windows")
-    set(DEFAULT_PAR_PORT "lpt1")
-    set(DEFAULT_SER_PORT "com1")
-else()
-    set(DEFAULT_PAR_PORT "unknown")
-    set(DEFAULT_SER_PORT "unknown")
-endif()
-
-# =====================================
-# Configuration
-# =====================================
-
-message(STATUS "Configuration summary:")
-message(STATUS "----------------------")
-
-if (DEBUG_CMAKE)
-    message(STATUS "CMAKE_HOST_SYSTEM: ${CMAKE_HOST_SYSTEM}")
-    message(STATUS "CMAKE_SYSTEM: ${CMAKE_SYSTEM}")
-    message(STATUS "CMAKE_FIND_ROOT_PATH: ${CMAKE_FIND_ROOT_PATH}")
-    message(STATUS "CMAKE_C_COMPILER: ${CMAKE_C_COMPILER}")
-    message(STATUS "CONFIG_DIR: ${CONFIG_DIR}")
-    message(STATUS "AVRDUDE_FULL_VERSION: ${AVRDUDE_FULL_VERSION}")
-    message(STATUS "USE_EXTERNAL: ${USE_EXTERNAL}")
-    message(STATUS "USE_LIBUSBWIN32: ${USE_LIBUSBWIN32}")
-    message(STATUS "HAVE_LIBELF: ${HAVE_LIBELF}")
-    message(STATUS "HAVE_LIBUSB: ${HAVE_LIBUSB}")
-    message(STATUS "HAVE_LIBUSB_1_0: ${HAVE_LIBUSB_1_0}")
-    message(STATUS "HAVE_LIBUSB_WIN32: ${HAVE_LIBUSB_WIN32}")
-    message(STATUS "HAVE_LIBHID: ${HAVE_LIBHID}")
-    message(STATUS "HAVE_LIBHIDAPI: ${HAVE_LIBHIDAPI}")
-    message(STATUS "HAVE_LIBFTDI: ${HAVE_LIBFTDI}")
-    message(STATUS "HAVE_LIBFTDI1: ${HAVE_LIBFTDI1}")
-    message(STATUS "HAVE_LIBREADLINE: ${HAVE_LIBREADLINE}")
-    message(STATUS "HAVE_LIBELF_H: ${HAVE_LIBELF_H}")
-    message(STATUS "HAVE_LIBELF_LIBELF_H: ${HAVE_LIBELF_LIBELF_H}")
-    message(STATUS "HAVE_USB_H: ${HAVE_USB_H}")
-    message(STATUS "HAVE_LUSB0_USB_H: ${HAVE_LUSB0_USB_H}")
-    message(STATUS "HAVE_LIBUSB_H: ${HAVE_LIBUSB_H}")
-    message(STATUS "HAVE_LIBUSB_1_0_LIBUSB_H: ${HAVE_LIBUSB_1_0_LIBUSB_H}")
-    message(STATUS "HAVE_HIDAPI_HIDAPI_H: ${HAVE_HIDAPI_HIDAPI_H}")
-    message(STATUS "LIBUSB_COMPAT_DIR: ${LIBUSB_COMPAT_DIR}")
-    message(STATUS "----------------------")
-endif()
-
-if(HAVE_LIBELF)
-    message(STATUS "DO HAVE    libelf")
-else()
-    message(STATUS "DON'T HAVE libelf")
-endif()
-
-if(HAVE_LIBUSB)
-    message(STATUS "DO HAVE    libusb")
-else()
-    message(STATUS "DON'T HAVE libusb")
-endif()
-
-if(HAVE_LIBUSB_1_0)
-    message(STATUS "DO HAVE    libusb_1_0")
-else()
-    message(STATUS "DON'T HAVE libusb_1_0")
-endif()
-
-if(HAVE_LIBHIDAPI)
-    message(STATUS "DO HAVE    libhidapi")
-else()
-    message(STATUS "DON'T HAVE libhidapi")
-endif()
-
-if(HAVE_LIBFTDI)
-    if(HAVE_LIBFTDI1)
-        message(STATUS "DO HAVE    libftdi (but prefer to use libftdi1)")
-    else()
-        message(STATUS "DO HAVE    libftdi")
-    endif()
-else()
-    message(STATUS "DON'T HAVE libftdi")
-endif()
-
-if(HAVE_LIBFTDI1)
-    message(STATUS "DO HAVE    libftdi1")
-else()
-    message(STATUS "DON'T HAVE libftdi1")
-endif()
-
-if(BUILD_DOC)
-	message(STATUS "ENABLED    doc")
-else()
-	message(STATUS "DISABLED   doc")
-endif()
-
-if(HAVE_PARPORT)
-    message(STATUS "ENABLED    parport")
-else()
-    message(STATUS "DISABLED   parport")
-endif()
-
-if(HAVE_LINUXGPIO)
-    message(STATUS "ENABLED    linuxgpio")
-else()
-    message(STATUS "DISABLED   linuxgpio")
-endif()
-
-if(HAVE_LINUXSPI)
-    message(STATUS "ENABLED    linuxspi")
-else()
-    message(STATUS "DISABLED   linuxspi")
-endif()
-
-message(STATUS "----------------------")
-
 # =====================================
 # Configure files
 # =====================================