Remove most of boost usage

libgm/CMakeLists.txt

@@ -8,7 +8,8 @@ option(STATIC_BUILD "Create static build of GateMate tools" ON)
 
 set(PROGRAM_PREFIX "" CACHE STRING "Name prefix for executables")
 
-set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
 if (MSVC)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -bigobj -EHsc")
 else()
@@ -31,7 +32,6 @@ else()
     endif()
 endif()
 if (WASI)
-    set(USE_THREADS OFF)
     add_definitions(
         -DBOOST_EXCEPTION_DISABLE
         -DBOOST_NO_EXCEPTIONS
@@ -40,15 +40,8 @@ if (WASI)
         -DBOOST_NO_CXX11_HDR_MUTEX
         -DBOOST_NO_CXX11_HDR_ATOMIC
     )
-else()
-    set(USE_THREADS ON)
-endif()
-set(boost_libs filesystem program_options system)
-if (USE_THREADS)
-    list(APPEND boost_libs thread)
-else()
-    add_definitions(-DNO_THREADS)
 endif()
+set(boost_libs program_options)
 
 find_package(Boost REQUIRED COMPONENTS ${boost_libs})
 

libgm/include/Bitstream.hpp

@@ -24,7 +24,6 @@
 #include <iostream>
 #include <memory>
 
-#include <boost/optional.hpp>
 #include <map>
 #include <stdexcept>
 #include <string>

libgm/include/Util.hpp

@@ -20,7 +20,8 @@
 #ifndef LIBGATEMATE_UTIL_HPP
 #define LIBGATEMATE_UTIL_HPP
 
-#include <boost/range/adaptor/reversed.hpp>
+#include <algorithm>
+#include <cassert>
 #include <cstdint>
 #include <iomanip>
 #include <sstream>
@@ -50,8 +51,8 @@ inline uint32_t parse_uint32(std::string str) { return uint32_t(strtoul(str.c_st
 inline std::string to_string(const std::vector<bool> &bv)
 {
     std::ostringstream os;
-    for (auto bit : boost::adaptors::reverse(bv))
-        os << (bit ? '1' : '0');
+    for (auto it = bv.rbegin(); it != bv.rend(); ++it)
+        os << (*it ? '1' : '0');
     return os.str();
 }
 
@@ -60,7 +61,8 @@ inline std::istream &operator>>(std::istream &in, std::vector<bool> &bv)
     bv.clear();
     std::string s;
     in >> s;
-    for (auto c : boost::adaptors::reverse(s)) {
+    for (auto it = s.rbegin(); it != s.rend(); ++it) {
+        char c = *it;
         assert((c == '0') || (c == '1'));
         bv.push_back((c == '1'));
     }

libgm/src/Bitstream.cpp

@@ -19,8 +19,6 @@
 
 #include "Bitstream.hpp"
 #include <bitset>
-#include <boost/algorithm/string/predicate.hpp>
-#include <boost/optional.hpp>
 #include <cstring>
 #include <iostream>
 #include "Chip.hpp"

libgm/tools/gmpack.cpp

@@ -17,8 +17,8 @@
  *
  */
 
-#include <boost/filesystem.hpp>
 #include <boost/program_options.hpp>
+#include <filesystem>
 #include <fstream>
 #include <iomanip>
 #include <iostream>
@@ -65,7 +65,7 @@ int main(int argc, char *argv[])
 
     if (vm.count("help")) {
     help:
-        boost::filesystem::path path(argv[0]);
+        std::filesystem::path path(argv[0]);
         std::cerr << "Open Source Tools for GateMate FPGAs Version " << git_describe_str << std::endl;
         std::cerr << "Copyright (C) 2024 The Project Peppercorn Authors" << std::endl;
         std::cerr << std::endl;

libgm/tools/gmunpack.cpp

@@ -17,9 +17,8 @@
  *
  */
 
-#include <boost/filesystem.hpp>
-#include <boost/optional.hpp>
 #include <boost/program_options.hpp>
+#include <filesystem>
 #include <fstream>
 #include <iostream>
 #include <stdexcept>
@@ -58,7 +57,7 @@ int main(int argc, char *argv[])
 
     if (vm.count("help")) {
     help:
-        boost::filesystem::path path(argv[0]);
+        std::filesystem::path path(argv[0]);
         std::cerr << "Open Source Tools for GateMate FPGAs Version " << git_describe_str << std::endl;
         std::cerr << "Copyright (C) 2024 The Project Peppercorn Authors" << std::endl;
         std::cerr << std::endl;