vcpkg/ports/telnetpp/fix-build-error.patch

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 09b4f9b..feb3746 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,9 +22,6 @@ message("Building Telnet++ with zlib: ${TELNETPP_WITH_ZLIB}")
 message("Building Telnet++ with code coverage: ${TELNETPP_COVERAGE}")
 message("Building Telnet++ with sanitizers: ${TELNETPP_SANITIZE}")
 
-include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
-conan_basic_setup(TARGETS NO_OUTPUT_DIRS)
-
 # The required C++ Standard for Telnet++ is C++14.
 set(CMAKE_CXX_STANDARD 14)
 
@@ -154,18 +151,24 @@ add_library(telnetpp
     ${TELNETPP_PRIVATE_INCLUDE_FILES}
 )
 
+if (BUILD_SHARED_LIBS)
+    add_definitions(-Dtelnetpp_EXPORTS)
+else()
+    add_definitions(-DTELNETPP_STATIC_DEFINE)
+endif()
+
 target_link_libraries(telnetpp
     PUBLIC
-        CONAN_PKG::gsl-lite
-        CONAN_PKG::boost_container
-        CONAN_PKG::boost_signals2
-        CONAN_PKG::boost_variant
+        ${BOOST_CONTAINER_LIBRARY}
+        ${BOOST_SIGNALS2_LIBRARY}
+        ${BOOST_VARIANT_LIBRARY}
 )
 
 if (TELNETPP_WITH_ZLIB)
+    find_package(ZLIB REQUIRED)
     target_link_libraries(telnetpp
         PRIVATE
-            CONAN_PKG::zlib
+            ${ZLIB_LIBRARIES}
     )
 endif()
 
@@ -180,7 +183,8 @@ target_include_directories(telnetpp
     PUBLIC
         $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
         $<INSTALL_INTERFACE:include/telnetpp-${TELNETPP_VERSION}>
-        "${Boost_INCLUDE_DIRS}"
+        $<BUILD_INTERFACE:${Boost_INCLUDE_DIRS}>
+        $<BUILD_INTERFACE:${GSL_INCLUDE_PATH}>
 )
 
 generate_export_header(telnetpp
@@ -197,17 +201,19 @@ install(
         telnetpp
     EXPORT
         telnetpp-config
+    RUNTIME DESTINATION
+        bin
     ARCHIVE DESTINATION
-        lib/telnetpp-${TELNETPP_VERSION}
+        lib
     LIBRARY DESTINATION
-        lib/telnetpp-${TELNETPP_VERSION}
+        lib
 )
 
 install(
     DIRECTORY
         include/
     DESTINATION
-        include/telnetpp-${TELNETPP_VERSION}
+        include
 )
 
 export(
@@ -221,7 +227,7 @@ install(
     EXPORT
         telnetpp-config
     DESTINATION
-        lib/telnetpp-${TELNETPP_VERSION}
+        share/telnetpp
 )
 
 include(CMakePackageConfigHelpers)
@@ -236,7 +242,7 @@ install(
     FILES
         "${CMAKE_CURRENT_BINARY_DIR}/telnetpp-config-version.cmake"
     DESTINATION
-        lib/telnetpp-${TELNETPP_VERSION}
+        share/telnetpp
 )
 
 if (TELNETPP_WITH_TESTS)
@@ -299,13 +305,13 @@ if (TELNETPP_WITH_TESTS)
     target_link_libraries(telnetpp_tester
         PRIVATE
             telnetpp
-            CONAN_PKG::gtest
+            GTest::GTest GTest::Main
     )
 
     if (TELNETPP_WITH_ZLIB)
         target_link_libraries(telnetpp_tester
             PRIVATE
-                CONAN_PKG::zlib
+                ${ZLIB_LIBRARIES}
         )
     endif()
 
diff --git a/include/telnetpp/core.hpp b/include/telnetpp/core.hpp
index 2362fac..48d340e 100644
--- a/include/telnetpp/core.hpp
+++ b/include/telnetpp/core.hpp
@@ -1,7 +1,7 @@
 #pragma once
 
 #include "telnetpp/detail/export.hpp"
-#include <gsl-lite.h>
+#include <gsl-lite.hpp>
 #include <string>
 #include <cstdint>
 
diff --git a/include/telnetpp/subnegotiation.hpp b/include/telnetpp/subnegotiation.hpp
index a209b72..1f24fc9 100644
--- a/include/telnetpp/subnegotiation.hpp
+++ b/include/telnetpp/subnegotiation.hpp
@@ -15,7 +15,11 @@ public:
     //* =====================================================================
     /// \brief Constructor
     //* =====================================================================
+#if _WIN32
+    const subnegotiation(option_type option, bytes content) noexcept
+#else
     constexpr subnegotiation(option_type option, bytes content) noexcept
+#endif
       : option_(std::move(option)),
         content_(std::move(content))
     {
@@ -32,7 +36,11 @@ public:
     //* =====================================================================
     /// \brief Returns the content for this subnegotiation.
     //* =====================================================================
+#if _WIN32
+    const bytes content() const noexcept
+#else
     constexpr bytes content() const noexcept
+#endif
     {
         return content_;
     }