Remove std::filesystem to avoid trouble with clang in travis-ci.

.travis.yml

@@ -60,7 +60,6 @@ matrix:
           packages: ['gcc-7', 'g++-7', 'lcov']
 
     - name: "clang"
-      if: branch = travis
       env:
         - CXX=clang++-10
         - CC=clang-10
@@ -73,7 +72,6 @@ matrix:
           packages: ['clang-10', 'clang++-10', 'clang-format-10', 'clang-tools-10', 'libc++-10-dev', 'libc++abi-10-dev']
 
     - name: "mac"
-      if: branch = travis
       os: osx
       osx_image: xcode11.2
       compiler: clang

CMakeLists.txt

@@ -23,7 +23,6 @@ include(ext_cmake_setup)
 include(ext_cmake_install)
 
 find_package(Threads REQUIRED)
-find_package(Filesystem REQUIRED)
 if(NOT TARGET ext::basics)
     add_subdirectory(external_libs/ext-basics EXCLUDE_FROM_ALL)
 endif()
@@ -74,7 +73,6 @@ target_compile_definitions(ext-logging PRIVATE EXT_IN_LIB=1)
 target_link_libraries(ext-logging PUBLIC
     ext::basics
     Threads::Threads
-    std::filesystem
 )
 
 # set up folder structure for XCode and VisualStudio

tests/logging.cpp

@@ -1,14 +1,12 @@
 // Copyright - 2016-2020 - Jan Christoph Uhde <Jan@UhdeJC.com>
 // Please see LICENSE.md for license or visit https://github.com/extcpp/basics
 #include <cstring>
-#include <filesystem>
 #include <sstream>
 
 #include <gtest/gtest.h>
 
 #include <ext/macros/platform.hpp>
 #include <ext/util/except.hpp>
-#include <ext/util/files.hpp>
 
 #define EXT_LOGGING_DEFAULT_LEVEL warn
 #include <ext/logging.hpp>
@@ -36,16 +34,6 @@ struct LoggingTest : public ::testing::Test {
         ASSERT_EQ(expected, _log.str());
     }
 
-    std::string path() {
-#ifdef EXT_COMPILER_VC
-        return "logging.cpp";
-#else
-        auto path = std::filesystem::current_path().parent_path().parent_path().parent_path() / "logging" / "tests" /
-                    "logging.cpp";
-        return path.string();
-#endif // EXT_COMPILER_VC
-    };
-
     std::string line() {
         return std::to_string(_line);
     }