CMake cleanup (#2885)

* 🔥 clean CMake files and Makefile * 💡 update documentation
2021-07-22 09:25:55 +02:00 · 2021-07-22 09:25:55 +02:00 · 19a5e12136
commit 19a5e12136
parent eba82ecd62
7 changed files with 72 additions and 468 deletions
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -30,13 +30,13 @@ if (POLICY CMP0077)
    cmake_policy(SET CMP0077 NEW)
 endif ()

-option(JSON_BuildTests "Build the unit tests when BUILD_TESTING is enabled." ${MAIN_PROJECT})
-option(JSON_Install "Install CMake targets during install step." ${MAIN_PROJECT})
-option(JSON_MultipleHeaders "Use non-amalgamated version of the library." OFF)
+option(JSON_BuildTests          "Build the unit tests when BUILD_TESTING is enabled." ${MAIN_PROJECT})
+option(JSON_CI                  "Enable CI build targets." OFF)
+option(JSON_Diagnostics         "Use extended diagnostic messages." OFF)
 option(JSON_ImplicitConversions "Enable implicit conversions." ON)
-option(JSON_Diagnostics "Enable better diagnostic messages." OFF)
-option(JSON_CI "Enable CI build targets." OFF)
-option(JSON_SystemInclude "Include as system headers (skip for clang-tidy)" OFF)
+option(JSON_Install             "Install CMake targets during install step." ${MAIN_PROJECT})
+option(JSON_MultipleHeaders     "Use non-amalgamated version of the library." OFF)
+option(JSON_SystemInclude       "Include as system headers (skip for clang-tidy)." OFF)

 if (JSON_CI)
    include(cmake/ci.cmake)
--- a/403
+++ b/403
@ -32,36 +32,16 @@ all:
 	@echo "ChangeLog.md - generate ChangeLog file"
 	@echo "check-amalgamation - check whether sources have been amalgamated"
 	@echo "clean - remove built files"
-	@echo "coverage - create coverage information with lcov"
-	@echo "cppcheck - analyze code with cppcheck"
-	@echo "cpplint - analyze code with cpplint"
-	@echo "clang_tidy - analyze code with Clang-Tidy"
-	@echo "clang_analyze - analyze code with Clang-Analyzer"
 	@echo "doctest - compile example files and check their output"
 	@echo "fuzz_testing - prepare fuzz testing of the JSON parser"
 	@echo "fuzz_testing_bson - prepare fuzz testing of the BSON parser"
 	@echo "fuzz_testing_cbor - prepare fuzz testing of the CBOR parser"
 	@echo "fuzz_testing_msgpack - prepare fuzz testing of the MessagePack parser"
 	@echo "fuzz_testing_ubjson - prepare fuzz testing of the UBJSON parser"
-	@echo "pedantic_clang - run Clang with maximal warning flags"
-	@echo "pedantic_gcc - run GCC with maximal warning flags"
 	@echo "pretty - beautify code with Artistic Style"
 	@echo "run_benchmarks - build and run benchmarks"


-##########################################################################
-# coverage
-##########################################################################
-
-coverage:
-	rm -fr cmake-build-coverage
-	mkdir cmake-build-coverage
-	cd cmake-build-coverage ; cmake .. -GNinja -DCMAKE_BUILD_TYPE=Debug -DJSON_Coverage=ON -DJSON_MultipleHeaders=ON
-	cd cmake-build-coverage ; ninja
-	cd cmake-build-coverage ; ctest -j10
-	cd cmake-build-coverage ; ninja lcov_html
-	open cmake-build-coverage/test/html/index.html
-
 ##########################################################################
 # documentation tests
 ##########################################################################
@ -71,304 +51,6 @@ doctest:
 	$(MAKE) check_output -C doc


-##########################################################################
-# warning detector
-##########################################################################
-
-# calling Clang with all warnings, except:
-# -Wno-c++2a-compat: u8 literals will behave differently in C++20...
-# -Wno-deprecated-declarations: the library deprecated some functions
-# -Wno-documentation-unknown-command: code uses user-defined commands like @complexity
-# -Wno-exit-time-destructors: warning in json code triggered by NLOHMANN_JSON_SERIALIZE_ENUM
-# -Wno-float-equal: not all comparisons in the tests can be replaced by Approx
-# -Wno-missing-prototypes: for NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE
-# -Wno-padded: padding is nothing to warn about
-# -Wno-range-loop-analysis: items tests "for(const auto i...)"
-# -Wno-extra-semi-stmt: spurious warnings for semicolons after JSON_ASSERT()
-# -Wno-switch-enum -Wno-covered-switch-default: pedantic/contradicting warnings about switches
-# -Wno-weak-vtables: exception class is defined inline, but has virtual method
-pedantic_clang:
-	rm -fr cmake-build-pedantic
-	CXXFLAGS=" \
-		-std=c++11 -Wno-c++98-compat -Wno-c++98-compat-pedantic \
-		-Werror \
-		-Weverything \
-		-Wno-c++2a-compat \
-		-Wno-deprecated-declarations \
-		-Wno-documentation-unknown-command \
-		-Wno-exit-time-destructors \
-		-Wno-float-equal \
-		-Wno-missing-prototypes \
-		-Wno-padded \
-		-Wno-range-loop-analysis \
-		-Wno-extra-semi-stmt \
-		-Wno-switch-enum -Wno-covered-switch-default \
-		-Wno-weak-vtables" cmake -S . -B cmake-build-pedantic -GNinja -DCMAKE_BUILD_TYPE=Debug -DJSON_MultipleHeaders=ON -DJSON_BuildTests=On
-	cmake --build cmake-build-pedantic
-
-# calling GCC with most warnings
-pedantic_gcc:
-	rm -fr cmake-build-pedantic
-	CXXFLAGS=" \
-		-std=c++11 \
-		-pedantic \
-		-Werror \
-		--all-warnings                                    \
-		--extra-warnings                                  \
-		-W                                                \
-		-Wno-abi-tag                                         \
-		-Waddress                                         \
-		-Waddress-of-packed-member                        \
-		-Wno-aggregate-return                                \
-		-Waggressive-loop-optimizations                   \
-		-Waligned-new=all                                 \
-		-Wall                                             \
-		-Walloc-zero                                      \
-		-Walloca                                          \
-		-Wanalyzer-double-fclose                          \
-		-Wanalyzer-double-free                            \
-		-Wanalyzer-exposure-through-output-file           \
-		-Wanalyzer-file-leak                              \
-		-Wanalyzer-free-of-non-heap                       \
-		-Wanalyzer-malloc-leak                            \
-		-Wanalyzer-null-argument                          \
-		-Wanalyzer-null-dereference                       \
-		-Wanalyzer-possible-null-argument                 \
-		-Wanalyzer-possible-null-dereference              \
-		-Wanalyzer-stale-setjmp-buffer                    \
-		-Wanalyzer-tainted-array-index                    \
-		-Wanalyzer-too-complex                            \
-		-Wanalyzer-unsafe-call-within-signal-handler      \
-		-Wanalyzer-use-after-free                         \
-		-Wanalyzer-use-of-pointer-in-stale-stack-frame    \
-		-Warith-conversion                                \
-		-Warray-bounds                                    \
-		-Warray-bounds=2                                  \
-		-Wattribute-alias=2                               \
-		-Wattribute-warning                               \
-		-Wattributes                                      \
-		-Wbool-compare                                    \
-		-Wbool-operation                                  \
-		-Wbuiltin-declaration-mismatch                    \
-		-Wbuiltin-macro-redefined                         \
-		-Wc++0x-compat                                    \
-		-Wc++11-compat                                    \
-		-Wc++14-compat                                    \
-		-Wc++17-compat                                    \
-		-Wc++1z-compat                                    \
-		-Wc++20-compat                                    \
-		-Wc++2a-compat                                    \
-		-Wcannot-profile                                  \
-		-Wcast-align                                      \
-		-Wcast-align=strict                               \
-		-Wcast-function-type                              \
-		-Wcast-qual                                       \
-		-Wcatch-value=3                                   \
-		-Wchar-subscripts                                 \
-		-Wclass-conversion                                \
-		-Wclass-memaccess                                 \
-		-Wclobbered                                       \
-		-Wcomma-subscript                                 \
-		-Wcomment                                         \
-		-Wcomments                                        \
-		-Wconditionally-supported                         \
-		-Wconversion                                      \
-		-Wconversion-null                                 \
-		-Wcoverage-mismatch                               \
-		-Wcpp                                             \
-		-Wctor-dtor-privacy                               \
-		-Wdangling-else                                   \
-		-Wdate-time                                       \
-		-Wdelete-incomplete                               \
-		-Wdelete-non-virtual-dtor                         \
-		-Wdeprecated                                      \
-		-Wdeprecated-copy                                 \
-		-Wdeprecated-copy-dtor                            \
-		-Wdeprecated-declarations                         \
-		-Wdisabled-optimization                           \
-		-Wdiv-by-zero                                     \
-		-Wdouble-promotion                                \
-		-Wduplicated-branches                             \
-		-Wduplicated-cond                                 \
-		-Weffc++                                          \
-		-Wempty-body                                      \
-		-Wendif-labels                                    \
-		-Wenum-compare                                    \
-		-Wexpansion-to-defined                            \
-		-Wextra                                           \
-		-Wextra-semi                                      \
-		-Wfloat-conversion                                \
-		-Wfloat-equal                                     \
-		-Wformat -Wformat-contains-nul                    \
-		-Wformat -Wformat-extra-args                      \
-		-Wformat -Wformat-nonliteral                      \
-		-Wformat -Wformat-security                        \
-		-Wformat -Wformat-y2k                             \
-		-Wformat -Wformat-zero-length                     \
-		-Wformat-diag                                     \
-		-Wformat-overflow=2                               \
-		-Wformat-signedness                               \
-		-Wformat-truncation=2                             \
-		-Wformat=2                                        \
-		-Wframe-address                                   \
-		-Wfree-nonheap-object                             \
-		-Whsa                                             \
-		-Wif-not-aligned                                  \
-		-Wignored-attributes                              \
-		-Wignored-qualifiers                              \
-		-Wimplicit-fallthrough=5                          \
-		-Winaccessible-base                               \
-		-Winherited-variadic-ctor                         \
-		-Winit-list-lifetime                              \
-		-Winit-self                                       \
-		-Winline                                          \
-		-Wint-in-bool-context                             \
-		-Wint-to-pointer-cast                             \
-		-Winvalid-memory-model                            \
-		-Winvalid-offsetof                                \
-		-Winvalid-pch                                     \
-		-Wliteral-suffix                                  \
-		-Wlogical-not-parentheses                         \
-		-Wlogical-op                                      \
-		-Wno-long-long                                       \
-		-Wlto-type-mismatch                               \
-		-Wmain                                            \
-		-Wmaybe-uninitialized                             \
-		-Wmemset-elt-size                                 \
-		-Wmemset-transposed-args                          \
-		-Wmisleading-indentation                          \
-		-Wmismatched-tags                                 \
-		-Wmissing-attributes                              \
-		-Wmissing-braces                                  \
-		-Wno-missing-declarations                            \
-		-Wmissing-field-initializers                      \
-		-Wmissing-include-dirs                            \
-		-Wmissing-profile                                 \
-		-Wmultichar                                       \
-		-Wmultiple-inheritance                            \
-		-Wmultistatement-macros                           \
-		-Wno-namespaces                                      \
-		-Wnarrowing                                       \
-		-Wno-noexcept                                        \
-		-Wnoexcept-type                                   \
-		-Wnon-template-friend                             \
-		-Wnon-virtual-dtor                                \
-		-Wnonnull                                         \
-		-Wnonnull-compare                                 \
-		-Wnonportable-cfstrings                           \
-		-Wnormalized=nfkc                                 \
-		-Wnull-dereference                                \
-		-Wodr                                             \
-		-Wold-style-cast                                  \
-		-Wopenmp-simd                                     \
-		-Woverflow                                        \
-		-Woverlength-strings                              \
-		-Woverloaded-virtual                              \
-		-Wpacked                                          \
-		-Wpacked-bitfield-compat                          \
-		-Wpacked-not-aligned                              \
-		-Wno-padded                                          \
-		-Wparentheses                                     \
-		-Wpedantic                                        \
-		-Wpessimizing-move                                \
-		-Wplacement-new=2                                 \
-		-Wpmf-conversions                                 \
-		-Wpointer-arith                                   \
-		-Wpointer-compare                                 \
-		-Wpragmas                                         \
-		-Wprio-ctor-dtor                                  \
-		-Wpsabi                                           \
-		-Wredundant-decls                                 \
-		-Wredundant-move                                  \
-		-Wredundant-tags                                  \
-		-Wregister                                        \
-		-Wreorder                                         \
-		-Wrestrict                                        \
-		-Wreturn-local-addr                               \
-		-Wreturn-type                                     \
-		-Wscalar-storage-order                            \
-		-Wsequence-point                                  \
-		-Wshadow=compatible-local                         \
-		-Wshadow=global                                   \
-		-Wshadow=local                                    \
-		-Wshift-count-negative                            \
-		-Wshift-count-overflow                            \
-		-Wshift-negative-value                            \
-		-Wshift-overflow=2                                \
-		-Wsign-compare                                    \
-		-Wsign-conversion                                 \
-		-Wsign-promo                                      \
-		-Wsized-deallocation                              \
-		-Wsizeof-array-argument                           \
-		-Wsizeof-pointer-div                              \
-		-Wsizeof-pointer-memaccess                        \
-		-Wstack-protector                                 \
-		-Wstrict-aliasing                                 \
-		-Wstrict-aliasing=3                               \
-		-Wstrict-null-sentinel                            \
-		-Wstrict-overflow                                 \
-		-Wstrict-overflow=5                               \
-		-Wstring-compare                                  \
-		-Wstringop-overflow                               \
-		-Wstringop-overflow=4                             \
-		-Wstringop-truncation                             \
-		-Wsubobject-linkage                               \
-		-Wsuggest-attribute=cold                          \
-		-Wsuggest-attribute=const                         \
-		-Wsuggest-attribute=format                        \
-		-Wsuggest-attribute=malloc                        \
-		-Wsuggest-attribute=noreturn                      \
-		-Wsuggest-attribute=pure                          \
-		-Wsuggest-final-methods                           \
-		-Wsuggest-final-types                             \
-		-Wsuggest-override                                \
-		-Wswitch                                          \
-		-Wswitch-bool                                     \
-		-Wswitch-default                                  \
-		-Wno-switch-enum                                     \
-		-Wswitch-outside-range                            \
-		-Wswitch-unreachable                              \
-		-Wsync-nand                                       \
-		-Wsynth                                           \
-		-Wno-system-headers                                  \
-		-Wtautological-compare                            \
-		-Wno-templates                                       \
-		-Wterminate                                       \
-		-Wtrampolines                                     \
-		-Wtrigraphs                                       \
-		-Wtype-limits                                     \
-		-Wundef                                           \
-		-Wuninitialized                                   \
-		-Wunknown-pragmas                                 \
-		-Wunreachable-code                                \
-		-Wunsafe-loop-optimizations                       \
-		-Wunused                                          \
-		-Wunused-but-set-parameter                        \
-		-Wunused-but-set-variable                         \
-		-Wunused-const-variable=2                         \
-		-Wunused-function                                 \
-		-Wunused-label                                    \
-		-Wno-unused-local-typedefs                           \
-		-Wunused-macros                                   \
-		-Wunused-parameter                                \
-		-Wunused-result                                   \
-		-Wunused-value                                    \
-		-Wunused-variable                                 \
-		-Wuseless-cast                                    \
-		-Wvarargs                                         \
-		-Wvariadic-macros                                 \
-		-Wvector-operation-performance                    \
-		-Wvirtual-inheritance                             \
-		-Wvirtual-move-assign                             \
-		-Wvla                                             \
-		-Wvolatile                                        \
-		-Wvolatile-register-var                           \
-		-Wwrite-strings                                   \
-		-Wzero-as-null-pointer-constant                   \
-		-Wzero-length-bounds                              \
-		" cmake -S . -B cmake-build-pedantic -GNinja -DCMAKE_BUILD_TYPE=Debug -DJSON_MultipleHeaders=ON -DJSON_BuildTests=On
-	cmake --build cmake-build-pedantic
-
 ##########################################################################
 # benchmarks
 ##########################################################################
@ -444,33 +126,6 @@ fuzzing-stop:
 # Static analysis
 ##########################################################################

-# call cppcheck <http://cppcheck.sourceforge.net>
-# Note: this target is called by Travis
-cppcheck:
-	cppcheck --enable=warning --inline-suppr --inconclusive --force --std=c++11 $(AMALGAMATED_FILE) --error-exitcode=1
-
-# call Clang Static Analyzer <https://clang-analyzer.llvm.org>
-clang_analyze:
-	rm -fr cmake-build-clang-analyze
-	mkdir cmake-build-clang-analyze
-	cd cmake-build-clang-analyze ; CCC_CXX=$(COMPILER_DIR)/clang++ CXX=$(COMPILER_DIR)/clang++ $(COMPILER_DIR)/scan-build cmake .. -GNinja -DJSON_BuildTests=On
-	cd cmake-build-clang-analyze ; \
-		$(COMPILER_DIR)/scan-build \
-			-enable-checker alpha.core.BoolAssignment,alpha.core.CallAndMessageUnInitRefArg,alpha.core.CastSize,alpha.core.CastToStruct,alpha.core.Conversion,alpha.core.DynamicTypeChecker,alpha.core.FixedAddr,alpha.core.PointerArithm,alpha.core.PointerSub,alpha.core.SizeofPtr,alpha.core.StackAddressAsyncEscape,alpha.core.TestAfterDivZero,alpha.deadcode.UnreachableCode,core.builtin.BuiltinFunctions,core.builtin.NoReturnFunctions,core.CallAndMessage,core.DivideZero,core.DynamicTypePropagation,core.NonnilStringConstants,core.NonNullParamChecker,core.NullDereference,core.StackAddressEscape,core.UndefinedBinaryOperatorResult,core.uninitialized.ArraySubscript,core.uninitialized.Assign,core.uninitialized.Branch,core.uninitialized.CapturedBlockVariable,core.uninitialized.UndefReturn,core.VLASize,cplusplus.InnerPointer,cplusplus.Move,cplusplus.NewDelete,cplusplus.NewDeleteLeaks,cplusplus.SelfAssignment,deadcode.DeadStores,nullability.NullableDereferenced,nullability.NullablePassedToNonnull,nullability.NullableReturnedFromNonnull,nullability.NullPassedToNonnull,nullability.NullReturnedFromNonnull \
-			--use-c++=$(COMPILER_DIR)/clang++ -analyze-headers -o report ninja
-	open cmake-build-clang-analyze/report/*/index.html
-
-# call cpplint <https://github.com/cpplint/cpplint>
-# Note: some errors expected due to false positives
-cpplint:
-	third_party/cpplint/cpplint.py \
-		--filter=-whitespace,-legal,-readability/alt_tokens,-runtime/references,-runtime/explicit \
-		--quiet --recursive $(SRCS)
-
-# call Clang-Tidy <https://clang.llvm.org/extra/clang-tidy/>
-clang_tidy:
-	$(COMPILER_DIR)/clang-tidy $(SRCS) -- -Iinclude -std=c++11
-
 # call PVS-Studio Analyzer <https://www.viva64.com/en/pvs-studio/>
 pvs_studio:
 	rm -fr cmake-build-pvs-studio
@ -480,26 +135,6 @@ pvs_studio:
 	cd cmake-build-pvs-studio ; plog-converter -a'GA:1,2;64:1;CS' -t fullhtml PVS-Studio.log -o pvs
 	open cmake-build-pvs-studio/pvs/index.html

-# call Infer <https://fbinfer.com> static analyzer
-infer:
-	rm -fr cmake-build-infer
-	mkdir cmake-build-infer
-	cd cmake-build-infer ; infer compile -- cmake .. -DJSON_MultipleHeaders=ON ; infer run -- make -j 4
-
-# call OCLint <http://oclint.org> static analyzer
-oclint:
-	oclint $(SRCS) -report-type html -enable-global-analysis -o oclint_report.html -max-priority-1=10000 -max-priority-2=10000 -max-priority-3=10000 -- -std=c++11 -Iinclude
-	open oclint_report.html
-
-# execute the test suite with Clang sanitizers (address and undefined behavior)
-clang_sanitize:
-	rm -fr cmake-build-clang-sanitize
-	mkdir cmake-build-clang-sanitize
-	cd cmake-build-clang-sanitize ; CXX=$(COMPILER_DIR)/clang++ cmake .. -DJSON_Sanitizer=On -DJSON_MultipleHeaders=ON -DJSON_BuildTests=On -GNinja
-	cd cmake-build-clang-sanitize ; ninja
-	cd cmake-build-clang-sanitize ; ctest -j10
-
-
 ##########################################################################
 # Code format and source amalgamation
 ##########################################################################
@ -547,42 +182,6 @@ check-amalgamation:
 	@diff $(AMALGAMATED_FILE) $(AMALGAMATED_FILE)~ || (echo "===================================================================\n  Amalgamation required! Please read the contribution guidelines\n  in file .github/CONTRIBUTING.md.\n===================================================================" ; mv $(AMALGAMATED_FILE)~ $(AMALGAMATED_FILE) ; false)
 	@mv $(AMALGAMATED_FILE)~ $(AMALGAMATED_FILE)

-# check if every header in nlohmann includes sufficient headers to be compiled individually
-check-single-includes:
-	@for x in $(SRCS); do \
-	  echo "Checking self-sufficiency of $$x..." ; \
-	  echo "#include <$$x>\nint main() {}\n" | $(SED) 's|include/||' > single_include_test.cpp; \
-	  $(CXX) $(CXXFLAGS) -Iinclude -std=c++11 single_include_test.cpp -o single_include_test; \
-	  rm -f single_include_test.cpp single_include_test; \
-	done
-
-
-##########################################################################
-# CMake
-##########################################################################
-
-# grep "^option" CMakeLists.txt test/CMakeLists.txt | $(SED) 's/(/ /' | awk '{print $2}' | xargs
-
-# check if all flags of our CMake files work
-check_cmake_flags_do:
-	$(CMAKE_BINARY) --version
-	for flag in JSON_BuildTests JSON_Install JSON_MultipleHeaders JSON_Sanitizer JSON_Valgrind JSON_NoExceptions JSON_Coverage; do \
-		rm -fr cmake_build; \
-		mkdir cmake_build; \
-		echo "\n\n$(CMAKE_BINARY) .. -D$$flag=On\n" ; \
-		cd cmake_build ; \
-		$(CMAKE_BINARY) -Werror=dev .. -D$$flag=On -DCMAKE_CXX_COMPILE_FEATURES="cxx_std_11;cxx_range_for" -DCMAKE_CXX_FLAGS="-std=gnu++11" ; \
-		test -f Makefile || exit 1 ; \
-		cd .. ; \
-	done;
-
-# call target `check_cmake_flags_do` twice: once for minimal required CMake version 3.1.0 and once for the installed version
-check_cmake_flags:
-	wget https://github.com/Kitware/CMake/releases/download/v3.1.0/cmake-3.1.0-Darwin64.tar.gz
-	tar xfz cmake-3.1.0-Darwin64.tar.gz
-	CMAKE_BINARY=$(abspath cmake-3.1.0-Darwin64/CMake.app/Contents/bin/cmake) $(MAKE) check_cmake_flags_do
-	CMAKE_BINARY=$(shell which cmake) $(MAKE) check_cmake_flags_do
-

 ##########################################################################
 # ChangeLog
@ -629,7 +228,7 @@ clean:
 	rm -fr json_unit json_benchmarks fuzz fuzz-testing *.dSYM test/*.dSYM oclint_report.html
 	rm -fr benchmarks/files/numbers/*.json
 	rm -fr cmake-3.1.0-Darwin64.tar.gz cmake-3.1.0-Darwin64
-	rm -fr cmake-build-coverage cmake-build-benchmarks cmake-build-pedantic fuzz-testing cmake-build-clang-analyze cmake-build-pvs-studio cmake-build-infer cmake-build-clang-sanitize cmake_build
+	rm -fr cmake-build-benchmarks cmake-build-pedantic fuzz-testing cmake-build-clang-analyze cmake-build-pvs-studio cmake-build-infer cmake_build
 	$(MAKE) clean -Cdoc

 ##########################################################################
--- a/cmake/ci.cmake
+++ b/cmake/ci.cmake
@ -755,7 +755,7 @@ else()
    )
 endif()

-set(JSON_CMAKE_FLAGS "JSON_BuildTests;JSON_Install;JSON_MultipleHeaders;JSON_ImplicitConversions;JSON_Sanitizer;JSON_Valgrind;JSON_NoExceptions;JSON_Coverage;JSON_Diagnostics;JSON_SystemInclude")
+set(JSON_CMAKE_FLAGS "JSON_BuildTests;JSON_Install;JSON_MultipleHeaders;JSON_ImplicitConversions;JSON_Valgrind;JSON_Diagnostics;JSON_SystemInclude")

 foreach(JSON_CMAKE_FLAG ${JSON_CMAKE_FLAGS})
    string(TOLOWER "ci_cmake_flag_${JSON_CMAKE_FLAG}" JSON_CMAKE_FLAG_TARGET)
--- a/doc/docset/docSet.sql
+++ b/doc/docset/docSet.sql
@ -126,11 +126,26 @@ INSERT INTO searchIndex(name, type, path) VALUES ('Binary Values', 'Guide', 'fea
 INSERT INTO searchIndex(name, type, path) VALUES ('Comments', 'Guide', 'features/comments/index.html');
 INSERT INTO searchIndex(name, type, path) VALUES ('Iterators', 'Guide', 'features/iterators/index.html');
 INSERT INTO searchIndex(name, type, path) VALUES ('Types', 'Guide', 'features/types/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Number Handling', 'Guide', 'features/types/number_handling/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Element Access', 'Guide', 'features/element_access/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON Pointer', 'Guide', 'features/json_pointer/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON Patch and Diff', 'Guide', 'features/json_patch/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON Merge Patch', 'Guide', 'features/merge_patch/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Object Order', 'Guide', 'features/object_order/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Parsing and Exceptions', 'Guide', 'features/parsing/parse_exceptions/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Parser Callbacks', 'Guide', 'features/parsing/parser_callbacks/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('SAX Interface', 'Guide', 'features/parsing/sax_interface/index.html');

 -- Macros
 INSERT INTO searchIndex(name, type, path) VALUES ('JSON_ASSERT', 'Macro', 'features/macros/index.html#json_assertx');
 INSERT INTO searchIndex(name, type, path) VALUES ('JSON_CATCH_USER', 'Macro', 'features/macros/index.html#json_catch_userexception');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_DIAGNOSTICS', 'Macro', 'features/macros/index.html#json_diagnostics');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_11', 'Macro', 'features/macros/index.html#json_has_cpp_11-json_has_cpp_14-json_has_cpp_17-json_has_cpp_20');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_14', 'Macro', 'features/macros/index.html#json_has_cpp_11-json_has_cpp_14-json_has_cpp_17-json_has_cpp_20');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_17', 'Macro', 'features/macros/index.html#json_has_cpp_11-json_has_cpp_14-json_has_cpp_17-json_has_cpp_20');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_20', 'Macro', 'features/macros/index.html#json_has_cpp_11-json_has_cpp_14-json_has_cpp_17-json_has_cpp_20');
 INSERT INTO searchIndex(name, type, path) VALUES ('JSON_NOEXCEPTION', 'Macro', 'features/macros/index.html#json_noexception');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_NO_IO', 'Macro', 'features/macros/index.html#json_no_io');
 INSERT INTO searchIndex(name, type, path) VALUES ('JSON_SKIP_UNSUPPORTED_COMPILER_CHECK', 'Macro', 'features/macros/index.html#json_skip_unsupported_compiler_check');
 INSERT INTO searchIndex(name, type, path) VALUES ('JSON_THROW_USER', 'Macro', 'features/macros/index.html#json_throw_userexception');
 INSERT INTO searchIndex(name, type, path) VALUES ('JSON_TRY_USER', 'Macro', 'features/macros/index.html#json_try_user');
--- a/doc/mkdocs/docs/features/parsing/parse_exceptions.md
+++ b/doc/mkdocs/docs/features/parsing/parse_exceptions.md
@ -1,4 +1,4 @@
-# Parsing and exceptions
+# Parsing and Exceptions

 When the input is not valid JSON, an exception of type [`parse_error`](../../home/exceptions.md#parse-errors) is thrown. This exception contains the position in the input where the error occurred, together with a diagnostic message and the last read input token. The exceptions page contains a [list of examples for parse error exceptions](../../home/exceptions.md#parse-errors). In case you process untrusted input, always enclose your code with a `#!cpp try`/`#!cpp catch` block, like

--- a/doc/mkdocs/docs/integration/cmake.md
+++ b/doc/mkdocs/docs/integration/cmake.md
@ -1,8 +1,10 @@
 # CMake

+## Integration
+
 You can also use the `nlohmann_json::nlohmann_json` interface target in CMake.  This target populates the appropriate usage requirements for `INTERFACE_INCLUDE_DIRECTORIES` to point to the appropriate include directories and `INTERFACE_COMPILE_FEATURES` for the necessary C++11 flags.

-## External
+### External

 To use this library from a CMake project, you can locate it directly with `find_package()` and use the namespaced imported target from the generated package configuration:

@ -17,15 +19,11 @@ target_link_libraries(foo PRIVATE nlohmann_json::nlohmann_json)

 The package configuration file, `nlohmann_jsonConfig.cmake`, can be used either from an install tree or directly out of the build tree.

-## Embedded
+### Embedded

 To embed the library directly into an existing CMake project, place the entire source tree in a subdirectory and call `add_subdirectory()` in your `CMakeLists.txt` file:

 ```cmake
-# Typically you don't care so much for a third party library's tests to be
-# run from your own project's code.
-set(JSON_BuildTests OFF CACHE INTERNAL "")
-
 # If you only include this third party in PRIVATE source files, you do not
 # need to install it when your main project gets installed.
 # set(JSON_Install OFF CACHE INTERNAL "")
@ -41,7 +39,7 @@ add_library(foo ...)
 target_link_libraries(foo PRIVATE nlohmann_json::nlohmann_json)
 ```

-## Embedded (FetchContent)
+### Embedded (FetchContent)

 Since CMake v3.11,
 [FetchContent](https://cmake.org/cmake/help/v3.11/module/FetchContent.html) can
@ -65,12 +63,11 @@ target_link_libraries(foo PRIVATE nlohmann_json::nlohmann_json)
 ```

 !!! Note
-	The repository <https://github.com/nlohmann/json> download size is huge.
-	It contains all the dataset used for the benchmarks. You might want to depend on
-	a smaller repository. For instance, you might want to replace the URL above by
+	The repository <https://github.com/nlohmann/json> download size is quite large.
+	You might want to depend on a smaller repository. For instance, you might want to replace the URL above by
 	<https://github.com/ArthurSonzogni/nlohmann_json_cmake_fetchcontent>.

-## Supporting Both
+### Supporting Both

 To allow your project to support either an externally supplied or an embedded JSON library, you can use a pattern akin to the following:

@ -101,3 +98,41 @@ endif()
 ```

 `thirdparty/nlohmann_json` is then a complete copy of this source tree.
+
+## CMake Options
+
+### `JSON_BuildTests`
+
+Build the unit tests when [`BUILD_TESTING`](https://cmake.org/cmake/help/latest/command/enable_testing.html) is enabled. This option is `ON` by default if the library's CMake project is the top project. That is, when integrating the library as described above, the test suite is not built unless explicitly switched on with this option.
+
+### `JSON_CI`
+
+Enable CI build targets. The exact targets are used during the several CI steps and are subject to change without notice. This option is `OFF` by default.
+
+### `JSON_Diagnostics`
+
+Enable [extended diagnostic messages](../home/exceptions.md#extended-diagnostic-messages) by defining macro [`JSON_DIAGNOSTICS`](../features/macros.md#json_diagnostics). This option is `OFF` by default.
+
+### `JSON_FastTests`
+
+Skip expensive/slow test suites. This option is `OFF` by default. Depends on `JSON_BuildTests`.
+
+### `JSON_ImplicitConversions`
+
+Enable implicit conversions by defining macro [`JSON_USE_IMPLICIT_CONVERSIONS`](../features/macros.md#json_use_implicit_conversions). This option is `ON` by default.
+
+### `JSON_Install`
+
+Install CMake targets during install step. This option is `ON` by default if the library's CMake project is the top project.
+
+### `JSON_MultipleHeaders`
+
+Use non-amalgamated version of the library. This option is `OFF` by default.
+
+### `JSON_SystemInclude`
+
+Treat the library headers like system headers (i.e., adding `SYSTEM` to the [`target_include_directories`](https://cmake.org/cmake/help/latest/command/target_include_directories.html) call) to checks for this library by tools like Clang-Tidy. This option is `OFF` by default.
+
+### `JSON_Valgrind`
+
+Execute test suite with [Valgrind](https://valgrind.org). This option is `OFF` by default. Depends on `JSON_BuildTests`.
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@ -1,8 +1,5 @@
-option(JSON_Sanitizer "Build test suite with Clang sanitizer" OFF)
-option(JSON_Valgrind "Execute test suite with Valgrind" OFF)
-option(JSON_NoExceptions "Build test suite without exceptions" OFF)
-option(JSON_Coverage "Build test suite with coverage information" OFF)
-option(JSON_FastTests "Whether to skip expensive tests" OFF)
+option(JSON_Valgrind    "Execute test suite with Valgrind." OFF)
+option(JSON_FastTests   "Skip expensive/slow tests." OFF)

 # download test data
 include(${CMAKE_CURRENT_SOURCE_DIR}/../cmake/download_test_data.cmake)
@ -11,13 +8,6 @@ include(${CMAKE_CURRENT_SOURCE_DIR}/../cmake/download_test_data.cmake)
 add_test(NAME "download_test_data" COMMAND ${CMAKE_COMMAND} --build ${CMAKE_BINARY_DIR} --target download_test_data)
 set_tests_properties(download_test_data PROPERTIES FIXTURES_SETUP TEST_DATA)

-if(JSON_Sanitizer)
-    message(STATUS "Building test suite with Clang sanitizer")
-    if(NOT MSVC)
-        set(CMAKE_CXX_FLAGS "-g -O0 -fsanitize=address -fsanitize=undefined -fsanitize=integer -fsanitize=nullability -fno-omit-frame-pointer -fno-sanitize-recover=all -fsanitize-recover=unsigned-integer-overflow")
-    endif()
-endif()
-
 if(JSON_Valgrind)
    find_program(CMAKE_MEMORYCHECK_COMMAND valgrind)
    message(STATUS "Executing test suite with Valgrind (${CMAKE_MEMORYCHECK_COMMAND})")
@ -25,36 +15,6 @@ if(JSON_Valgrind)
    separate_arguments(memcheck_command)
 endif()

-if(JSON_NoExceptions)
-    message(STATUS "Building test suite without exceptions")
-    if(NOT MSVC)
-        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DJSON_NOEXCEPTION")
-    endif()
-    set(DOCTEST_TEST_FILTER --no-throw)
-endif()
-
-if(JSON_Coverage)
-    message(STATUS "Building test suite with coverage information")
-
-    # from https://github.com/RWTH-HPC/CMake-codecov/blob/master/cmake/FindGcov.cmake
-    get_filename_component(COMPILER_PATH "${CMAKE_CXX_COMPILER}" PATH)
-    string(REGEX MATCH "^[0-9]+" GCC_VERSION "${CMAKE_CXX_COMPILER_VERSION}")
-    find_program(GCOV_BIN NAMES gcov-${GCC_VERSION} gcov HINTS ${COMPILER_PATH})
-
-    # collect all source files from the chosen include dir
-    file(GLOB_RECURSE SOURCE_FILES ${NLOHMANN_JSON_INCLUDE_BUILD_DIR}*.hpp)
-
-    # add target to collect coverage information and generate HTML file
-    # (filter script from https://stackoverflow.com/a/43726240/266378)
-    add_custom_target(lcov_html
-        COMMAND lcov --directory . --capture --output-file json.info --rc lcov_branch_coverage=1
-        COMMAND lcov -e json.info ${SOURCE_FILES} --output-file json.info.filtered --gcov-tool ${GCOV_BIN} --rc lcov_branch_coverage=1
-        COMMAND ${CMAKE_SOURCE_DIR}/test/thirdparty/imapdl/filterbr.py json.info.filtered > json.info.filtered.noexcept
-        COMMAND genhtml --title "JSON for Modern C++" --legend --demangle-cpp --output-directory html --show-details --branch-coverage json.info.filtered.noexcept
-        COMMENT "Generating HTML report test/html/index.html"
-    )
-endif()
-
 #############################################################################
 # doctest library with the main function to speed up build
 #############################################################################
@ -108,11 +68,6 @@ foreach(file ${files})
    target_include_directories(${testcase} PRIVATE ${CMAKE_BINARY_DIR}/include thirdparty/doctest thirdparty/fifo_map)
    target_link_libraries(${testcase} PRIVATE ${NLOHMANN_JSON_TARGET_NAME})

-    if (JSON_Coverage)
-        target_compile_options(${testcase} PRIVATE --coverage)
-        target_link_libraries(${testcase} PRIVATE --coverage)
-    endif()
-
    if (JSON_FastTests)
        add_test(NAME "${testcase}"
            COMMAND ${testcase} ${DOCTEST_TEST_FILTER}