diff --git a/Makefile b/Makefile
index c388873e89..849ad67ac0 100644
--- a/Makefile
+++ b/Makefile
@@ -1005,8 +1005,8 @@ SPATCH_TEST_FLAGS =
 # COMPUTE_HEADER_DEPENDENCIES=no this will be unset too.
 SPATCH_USE_O_DEPENDENCIES = YesPlease
 
-# Set SPATCH_CONCAT_COCCI to concatenate the contrib/cocci/*.cocci
-# files into a single contrib/cocci/ALL.cocci before running
+# Set SPATCH_CONCAT_COCCI to concatenate the tools/coccinelle/*.cocci
+# files into a single tools/coccinelle/ALL.cocci before running
 # "coccicheck".
 #
 # Pros:
@@ -1025,7 +1025,7 @@ SPATCH_USE_O_DEPENDENCIES = YesPlease
 #   generate a specific patch, e.g. this will always use strbuf.cocci,
 #   not ALL.cocci:
 #
-#	make contrib/coccinelle/strbuf.cocci.patch
+#	make tools/coccinelle/strbuf.cocci.patch
 SPATCH_CONCAT_COCCI = YesPlease
 
 # Rebuild 'coccicheck' if $(SPATCH), its flags etc. change
@@ -1066,11 +1066,13 @@ SOURCES_CMD = ( \
 		'*.sh' \
 		':!*[tp][0-9][0-9][0-9][0-9]*' \
 		':!contrib' \
+		':!tools' \
 		2>/dev/null || \
 	$(FIND) . \
 		\( -name .git -type d -prune \) \
 		-o \( -name '[tp][0-9][0-9][0-9][0-9]*' -prune \) \
 		-o \( -name contrib -type d -prune \) \
+		-o \( -name tools -type d -prune \) \
 		-o \( -name build -type d -prune \) \
 		-o \( -name .build -type d -prune \) \
 		-o \( -name 'trash*' -type d -prune \) \
@@ -2697,21 +2699,21 @@ $(BUILT_INS): git$X
 	ln -s $< $@ 2>/dev/null || \
 	cp $< $@
 
-config-list.h: generate-configlist.sh
+config-list.h: tools/generate-configlist.sh
 	@mkdir -p .depend
-	$(QUIET_GEN)$(SHELL_PATH) ./generate-configlist.sh . $@ .depend/config-list.h.d
+	$(QUIET_GEN)$(SHELL_PATH) ./tools/generate-configlist.sh . $@ .depend/config-list.h.d
 
 -include .depend/config-list.h.d
 
-command-list.h: generate-cmdlist.sh command-list.txt
+command-list.h: tools/generate-cmdlist.sh command-list.txt
 
 command-list.h: $(wildcard Documentation/git*.adoc)
-	$(QUIET_GEN)$(SHELL_PATH) ./generate-cmdlist.sh \
+	$(QUIET_GEN)$(SHELL_PATH) ./tools/generate-cmdlist.sh \
 		$(patsubst %,--exclude-program %,$(EXCLUDED_PROGRAMS)) \
 		. $@
 
-hook-list.h: generate-hooklist.sh Documentation/githooks.adoc
-	$(QUIET_GEN)$(SHELL_PATH) ./generate-hooklist.sh . $@
+hook-list.h: tools/generate-hooklist.sh Documentation/githooks.adoc
+	$(QUIET_GEN)$(SHELL_PATH) ./tools/generate-hooklist.sh . $@
 
 SCRIPT_DEFINES = $(SHELL_PATH_SQ):$(DIFF_SQ):\
 	$(localedir_SQ):$(USE_GETTEXT_SCHEME):$(SANE_TOOL_PATH_SQ):\
@@ -2724,8 +2726,8 @@ GIT-SCRIPT-DEFINES: FORCE
 		echo "$$FLAGS" >$@; \
             fi
 
-$(SCRIPT_SH_GEN) $(SCRIPT_LIB) : % : %.sh generate-script.sh GIT-BUILD-OPTIONS GIT-SCRIPT-DEFINES
-	$(QUIET_GEN)./generate-script.sh "$<" "$@+" ./GIT-BUILD-OPTIONS && \
+$(SCRIPT_SH_GEN) $(SCRIPT_LIB) : % : %.sh tools/generate-script.sh GIT-BUILD-OPTIONS GIT-SCRIPT-DEFINES
+	$(QUIET_GEN)./tools/generate-script.sh "$<" "$@+" ./GIT-BUILD-OPTIONS && \
 	mv $@+ $@
 
 git.rc: git.rc.in GIT-VERSION-GEN GIT-VERSION-FILE
@@ -2765,8 +2767,8 @@ endif
 
 PERL_DEFINES += $(gitexecdir) $(perllibdir) $(localedir)
 
-$(SCRIPT_PERL_GEN): % : %.perl generate-perl.sh GIT-PERL-DEFINES GIT-PERL-HEADER GIT-VERSION-FILE
-	$(QUIET_GEN)$(SHELL_PATH) generate-perl.sh ./GIT-BUILD-OPTIONS ./GIT-VERSION-FILE GIT-PERL-HEADER "$<" "$@+" && \
+$(SCRIPT_PERL_GEN): % : %.perl tools/generate-perl.sh GIT-PERL-DEFINES GIT-PERL-HEADER GIT-VERSION-FILE
+	$(QUIET_GEN)$(SHELL_PATH) tools/generate-perl.sh ./GIT-BUILD-OPTIONS ./GIT-VERSION-FILE GIT-PERL-HEADER "$<" "$@+" && \
 	mv $@+ $@
 
 PERL_DEFINES := $(subst $(space),:,$(PERL_DEFINES))
@@ -2794,8 +2796,8 @@ GIT-PERL-HEADER: $(PERL_HEADER_TEMPLATE) GIT-PERL-DEFINES Makefile
 perllibdir:
 	@echo '$(perllibdir_SQ)'
 
-git-instaweb: git-instaweb.sh generate-script.sh GIT-BUILD-OPTIONS GIT-SCRIPT-DEFINES
-	$(QUIET_GEN)./generate-script.sh "$<" "$@+" ./GIT-BUILD-OPTIONS && \
+git-instaweb: git-instaweb.sh tools/generate-script.sh GIT-BUILD-OPTIONS GIT-SCRIPT-DEFINES
+	$(QUIET_GEN)./tools/generate-script.sh "$<" "$@+" ./GIT-BUILD-OPTIONS && \
 	chmod +x $@+ && \
 	mv $@+ $@
 else # NO_PERL
@@ -2812,9 +2814,9 @@ endif # NO_PERL
 $(SCRIPT_PYTHON_GEN): GIT-BUILD-OPTIONS
 
 ifndef NO_PYTHON
-$(SCRIPT_PYTHON_GEN): generate-python.sh
+$(SCRIPT_PYTHON_GEN): tools/generate-python.sh
 $(SCRIPT_PYTHON_GEN): % : %.py
-	$(QUIET_GEN)$(SHELL_PATH) generate-python.sh ./GIT-BUILD-OPTIONS "$<" "$@"
+	$(QUIET_GEN)$(SHELL_PATH) tools/generate-python.sh ./GIT-BUILD-OPTIONS "$<" "$@"
 else # NO_PYTHON
 $(SCRIPT_PYTHON_GEN): % : unimplemented.sh
 	$(QUIET_GEN) \
@@ -3234,9 +3236,9 @@ endif
 NO_PERL_CPAN_FALLBACKS_SQ = $(subst ','\'',$(NO_PERL_CPAN_FALLBACKS))
 endif
 
-perl/build/lib/%.pm: perl/%.pm generate-perl.sh GIT-BUILD-OPTIONS GIT-VERSION-FILE GIT-PERL-DEFINES
+perl/build/lib/%.pm: perl/%.pm tools/generate-perl.sh GIT-BUILD-OPTIONS GIT-VERSION-FILE GIT-PERL-DEFINES
 	$(call mkdir_p_parent_template)
-	$(QUIET_GEN)$(SHELL_PATH) generate-perl.sh ./GIT-BUILD-OPTIONS ./GIT-VERSION-FILE GIT-PERL-HEADER "$<" "$@"
+	$(QUIET_GEN)$(SHELL_PATH) tools/generate-perl.sh ./GIT-BUILD-OPTIONS ./GIT-VERSION-FILE GIT-PERL-HEADER "$<" "$@"
 
 perl/build/man/man3/Git.3pm: perl/Git.pm
 	$(call mkdir_p_parent_template)
@@ -3465,15 +3467,15 @@ check:
 		exit 1; \
 	fi
 
-COCCI_GEN_ALL = .build/contrib/coccinelle/ALL.cocci
-COCCI_GLOB = $(wildcard contrib/coccinelle/*.cocci)
+COCCI_GEN_ALL = .build/tools/coccinelle/ALL.cocci
+COCCI_GLOB = $(wildcard tools/coccinelle/*.cocci)
 COCCI_RULES_TRACKED = $(COCCI_GLOB:%=.build/%)
 COCCI_RULES_TRACKED_NO_PENDING = $(filter-out %.pending.cocci,$(COCCI_RULES_TRACKED))
 COCCI_RULES =
 COCCI_RULES += $(COCCI_GEN_ALL)
 COCCI_RULES += $(COCCI_RULES_TRACKED)
 COCCI_NAMES =
-COCCI_NAMES += $(COCCI_RULES:.build/contrib/coccinelle/%.cocci=%)
+COCCI_NAMES += $(COCCI_RULES:.build/tools/coccinelle/%.cocci=%)
 
 COCCICHECK_PENDING = $(filter %.pending.cocci,$(COCCI_RULES))
 COCCICHECK = $(filter-out $(COCCICHECK_PENDING),$(COCCI_RULES))
@@ -3488,20 +3490,20 @@ COCCICHECK_PATCHES_PENDING_INTREE = $(COCCICHECK_PATCHES_PENDING:.build/%=%)
 # on $(MAKECMDGOALS) that match these $(COCCI_RULES)
 COCCI_RULES_GLOB =
 COCCI_RULES_GLOB += cocci%
-COCCI_RULES_GLOB += .build/contrib/coccinelle/%
+COCCI_RULES_GLOB += .build/tools/coccinelle/%
 COCCI_RULES_GLOB += $(COCCICHECK_PATCHES)
 COCCI_RULES_GLOB += $(COCCICHEC_PATCHES_PENDING)
 COCCI_RULES_GLOB += $(COCCICHECK_PATCHES_INTREE)
 COCCI_RULES_GLOB += $(COCCICHECK_PATCHES_PENDING_INTREE)
 COCCI_GOALS = $(filter $(COCCI_RULES_GLOB),$(MAKECMDGOALS))
 
-COCCI_TEST_RES = $(wildcard contrib/coccinelle/tests/*.res)
+COCCI_TEST_RES = $(wildcard tools/coccinelle/tests/*.res)
 
 $(COCCI_RULES_TRACKED): .build/% : %
 	$(call mkdir_p_parent_template)
 	$(QUIET_CP)cp $< $@
 
-.build/contrib/coccinelle/FOUND_H_SOURCES: $(FOUND_H_SOURCES)
+.build/tools/coccinelle/FOUND_H_SOURCES: $(FOUND_H_SOURCES)
 	$(call mkdir_p_parent_template)
 	$(QUIET_GEN) >$@
 
@@ -3515,12 +3517,12 @@ endif
 define cocci-rule
 
 ## Rule for .build/$(1).patch/$(2); Params:
-# $(1) = e.g. ".build/contrib/coccinelle/free.cocci"
+# $(1) = e.g. ".build/tools/coccinelle/free.cocci"
 # $(2) = e.g. "grep.c"
 # $(3) = e.g. "grep.o"
-COCCI_$(1:.build/contrib/coccinelle/%.cocci=%) += $(1).d/$(2).patch
+COCCI_$(1:.build/tools/coccinelle/%.cocci=%) += $(1).d/$(2).patch
 $(1).d/$(2).patch: GIT-SPATCH-DEFINES
-$(1).d/$(2).patch: $(if $(and $(SPATCH_USE_O_DEPENDENCIES),$(wildcard $(3))),$(3),.build/contrib/coccinelle/FOUND_H_SOURCES)
+$(1).d/$(2).patch: $(if $(and $(SPATCH_USE_O_DEPENDENCIES),$(wildcard $(3))),$(3),.build/tools/coccinelle/FOUND_H_SOURCES)
 $(1).d/$(2).patch: $(1)
 $(1).d/$(2).patch: $(1).d/%.patch : %
 	$$(call mkdir_p_parent_template)
@@ -3546,13 +3548,13 @@ endif
 
 define spatch-rule
 
-.build/contrib/coccinelle/$(1).cocci.patch: $$(COCCI_$(1))
+.build/tools/coccinelle/$(1).cocci.patch: $$(COCCI_$(1))
 	$$(QUIET_SPATCH_CAT)cat $$^ >$$@ && \
 	if test -s $$@; \
 	then \
 		echo '    ' SPATCH result: $$@; \
 	fi
-contrib/coccinelle/$(1).cocci.patch: .build/contrib/coccinelle/$(1).cocci.patch
+tools/coccinelle/$(1).cocci.patch: .build/tools/coccinelle/$(1).cocci.patch
 	$$(QUIET_CP)cp $$< $$@
 
 endef
@@ -3566,9 +3568,9 @@ $(COCCI_TEST_RES_GEN): GIT-SPATCH-DEFINES
 $(COCCI_TEST_RES_GEN): .build/%.res : %.c
 $(COCCI_TEST_RES_GEN): .build/%.res : %.res
 ifdef SPATCH_CONCAT_COCCI
-$(COCCI_TEST_RES_GEN): .build/contrib/coccinelle/tests/%.res : $(COCCI_GEN_ALL)
+$(COCCI_TEST_RES_GEN): .build/tools/coccinelle/tests/%.res : $(COCCI_GEN_ALL)
 else
-$(COCCI_TEST_RES_GEN): .build/contrib/coccinelle/tests/%.res : contrib/coccinelle/%.cocci
+$(COCCI_TEST_RES_GEN): .build/tools/coccinelle/tests/%.res : tools/coccinelle/%.cocci
 endif
 	$(call mkdir_p_parent_template)
 	$(QUIET_SPATCH_TEST)$(SPATCH) $(SPATCH_TEST_FLAGS) \
@@ -3584,14 +3586,14 @@ coccicheck-test: $(COCCI_TEST_RES_GEN)
 coccicheck: coccicheck-test
 
 ifdef SPATCH_CONCAT_COCCI
-COCCICHECK_PATCH_MUST_BE_EMPTY_FILES = contrib/coccinelle/ALL.cocci.patch
+COCCICHECK_PATCH_MUST_BE_EMPTY_FILES = tools/coccinelle/ALL.cocci.patch
 else
 COCCICHECK_PATCH_MUST_BE_EMPTY_FILES = $(COCCICHECK_PATCHES_INTREE)
 endif
 coccicheck: $(COCCICHECK_PATCH_MUST_BE_EMPTY_FILES)
 	! grep ^ $(COCCICHECK_PATCH_MUST_BE_EMPTY_FILES) /dev/null
 
-# See contrib/coccinelle/README
+# See tools/coccinelle/README
 coccicheck-pending: coccicheck-test
 coccicheck-pending: $(COCCICHECK_PATCHES_PENDING_INTREE)
 
@@ -3865,8 +3867,8 @@ profile-clean:
 
 cocciclean:
 	$(RM) GIT-SPATCH-DEFINES
-	$(RM) -r .build/contrib/coccinelle
-	$(RM) contrib/coccinelle/*.cocci.patch
+	$(RM) -r .build/tools/coccinelle
+	$(RM) tools/coccinelle/*.cocci.patch
 
 clean: profile-clean coverage-clean cocciclean
 	$(RM) -r .build $(UNIT_TEST_BIN)
@@ -3944,7 +3946,7 @@ check-docs::
 ### Make sure built-ins do not have dups and listed in git.c
 #
 check-builtins::
-	./check-builtins.sh
+	./tools/check-builtins.sh
 
 ### Test suite coverage testing
 #
diff --git a/ci/run-static-analysis.sh b/ci/run-static-analysis.sh
index 9e9c72681d..ba67e80b4d 100755
--- a/ci/run-static-analysis.sh
+++ b/ci/run-static-analysis.sh
@@ -10,7 +10,7 @@ make coccicheck
 set +x
 
 fail=
-for cocci_patch in contrib/coccinelle/*.patch
+for cocci_patch in tools/coccinelle/*.patch
 do
 	if test -s "$cocci_patch"
 	then
diff --git a/config.mak.dev b/config.mak.dev
index e86b6e1b34..c8dcf78779 100644
--- a/config.mak.dev
+++ b/config.mak.dev
@@ -1,5 +1,5 @@
 ifndef COMPILER_FEATURES
-COMPILER_FEATURES := $(shell ./detect-compiler $(CC))
+COMPILER_FEATURES := $(shell ./tools/detect-compiler $(CC))
 endif
 
 ifeq ($(filter no-error,$(DEVOPTS)),)
diff --git a/contrib/buildsystems/CMakeLists.txt b/contrib/buildsystems/CMakeLists.txt
index 0732a04e0f..d102e4696f 100644
--- a/contrib/buildsystems/CMakeLists.txt
+++ b/contrib/buildsystems/CMakeLists.txt
@@ -639,7 +639,7 @@ set(EXCLUSION_PROGS_CACHE ${EXCLUSION_PROGS} CACHE STRING "Programs not built" F
 if(NOT EXISTS ${CMAKE_BINARY_DIR}/command-list.h OR NOT EXCLUSION_PROGS_CACHE STREQUAL EXCLUSION_PROGS)
 	list(REMOVE_ITEM EXCLUSION_PROGS empty)
 	message("Generating command-list.h")
-	execute_process(COMMAND "${SH_EXE}" "${CMAKE_SOURCE_DIR}/generate-cmdlist.sh"
+	execute_process(COMMAND "${SH_EXE}" "${CMAKE_SOURCE_DIR}/tools/generate-cmdlist.sh"
 				${EXCLUSION_PROGS}
 				"${CMAKE_SOURCE_DIR}"
 				"${CMAKE_BINARY_DIR}/command-list.h")
@@ -647,14 +647,14 @@ endif()
 
 if(NOT EXISTS ${CMAKE_BINARY_DIR}/config-list.h)
 	message("Generating config-list.h")
-	execute_process(COMMAND "${SH_EXE}" "${CMAKE_SOURCE_DIR}/generate-configlist.sh"
+	execute_process(COMMAND "${SH_EXE}" "${CMAKE_SOURCE_DIR}/tools/generate-configlist.sh"
 				"${CMAKE_SOURCE_DIR}"
 				"${CMAKE_BINARY_DIR}/config-list.h")
 endif()
 
 if(NOT EXISTS ${CMAKE_BINARY_DIR}/hook-list.h)
 	message("Generating hook-list.h")
-	execute_process(COMMAND "${SH_EXE}" ${CMAKE_SOURCE_DIR}/generate-hooklist.sh
+	execute_process(COMMAND "${SH_EXE}" ${CMAKE_SOURCE_DIR}/tools/generate-hooklist.sh
 				"${CMAKE_SOURCE_DIR}"
 				"${CMAKE_BINARY_DIR}/hook-list.h")
 endif()
@@ -835,11 +835,11 @@ foreach(script ${git_shell_scripts})
 	endif()
 
 	add_custom_command(OUTPUT "${CMAKE_BINARY_DIR}/${shell_gen_path}"
-		COMMAND "${SH_EXE}" "${CMAKE_SOURCE_DIR}/generate-script.sh"
+		COMMAND "${SH_EXE}" "${CMAKE_SOURCE_DIR}/tools/generate-script.sh"
 			"${CMAKE_SOURCE_DIR}/${script}.sh"
 			"${CMAKE_BINARY_DIR}/${shell_gen_path}"
 			"${CMAKE_BINARY_DIR}/GIT-BUILD-OPTIONS"
-		DEPENDS "${CMAKE_SOURCE_DIR}/generate-script.sh"
+		DEPENDS "${CMAKE_SOURCE_DIR}/tools/generate-script.sh"
 			"${CMAKE_SOURCE_DIR}/${script}.sh"
 		VERBATIM)
 	list(APPEND shell_gen ${CMAKE_BINARY_DIR}/${shell_gen_path})
@@ -878,13 +878,13 @@ foreach(script ${git_perl_scripts} ${perl_modules})
 	file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/${perl_gen_dir}")
 
 	add_custom_command(OUTPUT "${CMAKE_BINARY_DIR}/${perl_gen_path}"
-		COMMAND "${SH_EXE}" "${CMAKE_SOURCE_DIR}/generate-perl.sh"
+		COMMAND "${SH_EXE}" "${CMAKE_SOURCE_DIR}/tools/generate-perl.sh"
 			"${CMAKE_BINARY_DIR}/GIT-BUILD-OPTIONS"
 			"${CMAKE_BINARY_DIR}/GIT-VERSION-FILE"
 			"${CMAKE_BINARY_DIR}/GIT-PERL-HEADER"
 			"${CMAKE_SOURCE_DIR}/${script}"
 			"${CMAKE_BINARY_DIR}/${perl_gen_path}"
-		DEPENDS "${CMAKE_SOURCE_DIR}/generate-perl.sh"
+		DEPENDS "${CMAKE_SOURCE_DIR}/tools/generate-perl.sh"
 			"${CMAKE_SOURCE_DIR}/${script}"
 			"${CMAKE_BINARY_DIR}/GIT-BUILD-OPTIONS"
 			"${CMAKE_BINARY_DIR}/GIT-VERSION-FILE"
@@ -895,11 +895,11 @@ add_custom_target(perl-gen ALL DEPENDS ${perl_gen})
 
 # Python script
 add_custom_command(OUTPUT "${CMAKE_BINARY_DIR}/git-p4"
-	COMMAND "${SH_EXE}" "${CMAKE_SOURCE_DIR}/generate-python.sh"
+	COMMAND "${SH_EXE}" "${CMAKE_SOURCE_DIR}/tools/generate-python.sh"
 		"${CMAKE_BINARY_DIR}/GIT-BUILD-OPTIONS"
 		"${CMAKE_SOURCE_DIR}/git-p4.py"
 		"${CMAKE_BINARY_DIR}/git-p4"
-	DEPENDS "${CMAKE_SOURCE_DIR}/generate-python.sh"
+	DEPENDS "${CMAKE_SOURCE_DIR}/tools/generate-python.sh"
 		"${CMAKE_SOURCE_DIR}/git-p4.py"
 		"${CMAKE_BINARY_DIR}/GIT-BUILD-OPTIONS"
 	VERBATIM)
diff --git a/contrib/meson.build b/contrib/meson.build
index a88c5dfe09..569c23ee76 100644
--- a/contrib/meson.build
+++ b/contrib/meson.build
@@ -2,5 +2,4 @@ foreach feature : get_option('contrib')
   subdir(feature)
 endforeach
 
-subdir('coccinelle')
 subdir('credential')
diff --git a/contrib/subtree/meson.build b/contrib/subtree/meson.build
index 161435abeb..804c315894 100644
--- a/contrib/subtree/meson.build
+++ b/contrib/subtree/meson.build
@@ -3,7 +3,7 @@ git_subtree = custom_target(
   output: 'git-subtree',
   command: [
     shell,
-    meson.project_source_root() / 'generate-script.sh',
+    meson.project_source_root() / 'tools/generate-script.sh',
     '@INPUT@',
     '@OUTPUT@',
     meson.project_build_root() / 'GIT-BUILD-OPTIONS',
diff --git a/git-compat-util.h b/git-compat-util.h
index bebcf9f698..4b4ea2498f 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -34,10 +34,6 @@ struct strbuf;
 #  define DISABLE_WARNING(warning)
 #endif
 
-#ifdef DISABLE_SIGN_COMPARE_WARNINGS
-DISABLE_WARNING(-Wsign-compare)
-#endif
-
 #undef FLEX_ARRAY
 #define FLEX_ARRAY /* empty - weather balloon to require C99 FAM */
 
@@ -1099,3 +1095,7 @@ extern int not_supposed_to_survive;
 #endif /* CHECK_ASSERTION_SIDE_EFFECTS */
 
 #endif
+
+#ifdef DISABLE_SIGN_COMPARE_WARNINGS
+DISABLE_WARNING(-Wsign-compare)
+#endif
diff --git a/meson.build b/meson.build
index 5841a2bf79..4dd0e2c142 100644
--- a/meson.build
+++ b/meson.build
@@ -271,6 +271,13 @@ version_gen_environment.set('GIT_VERSION', get_option('version'))
 
 compiler = meson.get_compiler('c')
 
+compat_sources = [
+  'compat/nonblock.c',
+  'compat/obstack.c',
+  'compat/open.c',
+  'compat/terminal.c',
+]
+
 libgit_sources = [
   'abspath.c',
   'add-interactive.c',
@@ -304,10 +311,6 @@ libgit_sources = [
   'commit.c',
   'common-exit.c',
   'common-init.c',
-  'compat/nonblock.c',
-  'compat/obstack.c',
-  'compat/open.c',
-  'compat/terminal.c',
   'compiler-tricks/not-constant.c',
   'config.c',
   'connect.c',
@@ -556,7 +559,7 @@ libgit_sources = [
 libgit_sources += custom_target(
   input: 'command-list.txt',
   output: 'command-list.h',
-  command: [shell, meson.current_source_dir() + '/generate-cmdlist.sh', meson.current_source_dir(), '@OUTPUT@'],
+  command: [shell, meson.current_source_dir() + '/tools/generate-cmdlist.sh', meson.current_source_dir(), '@OUTPUT@'],
   env: script_environment,
 )
 
@@ -725,10 +728,10 @@ endif
 builtin_sources += custom_target(
   output: 'config-list.h',
   depfile: 'config-list.h.d',
-  depend_files: [ 'generate-configlist.sh' ],
+  depend_files: [ 'tools/generate-configlist.sh' ],
   command: [
     shell,
-    meson.current_source_dir() / 'generate-configlist.sh',
+    meson.current_source_dir() / 'tools/generate-configlist.sh',
     meson.current_source_dir(),
     '@OUTPUT@',
     '@DEPFILE@',
@@ -741,7 +744,7 @@ builtin_sources += custom_target(
   output: 'hook-list.h',
   command: [
     shell,
-    meson.current_source_dir() + '/generate-hooklist.sh',
+    meson.current_source_dir() + '/tools/generate-hooklist.sh',
     meson.current_source_dir(),
     '@OUTPUT@',
   ],
@@ -1175,7 +1178,7 @@ endif
 
 if not has_poll_h and not has_sys_poll_h
   libgit_c_args += '-DNO_POLL'
-  libgit_sources += 'compat/poll/poll.c'
+  compat_sources += 'compat/poll/poll.c'
   libgit_include_directories += 'compat/poll'
 endif
 
@@ -1191,7 +1194,7 @@ endif
 # implementation to threat things like drive prefixes specially.
 if host_machine.system() == 'windows' or not compiler.has_header('libgen.h')
   libgit_c_args += '-DNO_LIBGEN_H'
-  libgit_sources += 'compat/basename.c'
+  compat_sources += 'compat/basename.c'
 endif
 
 if compiler.has_header('paths.h')
@@ -1221,7 +1224,7 @@ if host_machine.system() != 'windows'
   foreach symbol : ['inet_ntop', 'inet_pton', 'hstrerror']
     if not compiler.has_function(symbol, dependencies: networking_dependencies)
       libgit_c_args += '-DNO_' + symbol.to_upper()
-      libgit_sources += 'compat/' + symbol + '.c'
+      compat_sources += 'compat/' + symbol + '.c'
     endif
   endforeach
 endif
@@ -1263,18 +1266,18 @@ else
 endif
 
 if host_machine.system() == 'darwin'
-  libgit_sources += 'compat/precompose_utf8.c'
+  compat_sources += 'compat/precompose_utf8.c'
   libgit_c_args += '-DPRECOMPOSE_UNICODE'
   libgit_c_args += '-DPROTECT_HFS_DEFAULT'
 endif
 
 # Configure general compatibility wrappers.
 if host_machine.system() == 'cygwin'
-  libgit_sources += [
+  compat_sources += [
     'compat/win32/path-utils.c',
   ]
 elif host_machine.system() == 'windows'
-  libgit_sources += [
+  compat_sources += [
     'compat/winansi.c',
     'compat/win32/dirent.c',
     'compat/win32/flush.c',
@@ -1301,20 +1304,20 @@ elif host_machine.system() == 'windows'
   libgit_include_directories += 'compat/win32'
   if compiler.get_id() == 'msvc'
     libgit_include_directories += 'compat/vcbuild/include'
-    libgit_sources += 'compat/msvc.c'
+    compat_sources += 'compat/msvc.c'
   else
-    libgit_sources += 'compat/mingw.c'
+    compat_sources += 'compat/mingw.c'
   endif
 endif
 
 if host_machine.system() == 'linux'
-  libgit_sources += 'compat/linux/procinfo.c'
+  compat_sources += 'compat/linux/procinfo.c'
 elif host_machine.system() == 'windows'
-  libgit_sources += 'compat/win32/trace2_win32_process_info.c'
+  compat_sources += 'compat/win32/trace2_win32_process_info.c'
 elif host_machine.system() == 'darwin'
-  libgit_sources += 'compat/darwin/procinfo.c'
+  compat_sources += 'compat/darwin/procinfo.c'
 else
-  libgit_sources += 'compat/stub/procinfo.c'
+  compat_sources += 'compat/stub/procinfo.c'
 endif
 
 if host_machine.system() == 'cygwin' or host_machine.system() == 'windows'
@@ -1327,13 +1330,13 @@ endif
 
 # Configure the simple-ipc subsystem required fro the fsmonitor.
 if host_machine.system() == 'windows'
-  libgit_sources += [
+  compat_sources += [
     'compat/simple-ipc/ipc-shared.c',
     'compat/simple-ipc/ipc-win32.c',
   ]
   libgit_c_args += '-DSUPPORTS_SIMPLE_IPC'
 else
-  libgit_sources += [
+  compat_sources += [
     'compat/simple-ipc/ipc-shared.c',
     'compat/simple-ipc/ipc-unix-socket.c',
   ]
@@ -1358,7 +1361,7 @@ if fsmonitor_backend != ''
   libgit_c_args += '-DHAVE_FSMONITOR_DAEMON_BACKEND'
   libgit_c_args += '-DHAVE_FSMONITOR_OS_SETTINGS'
 
-  libgit_sources += [
+  compat_sources += [
     'compat/fsmonitor/fsm-health-' + fsmonitor_backend + '.c',
     'compat/fsmonitor/fsm-ipc-' + fsmonitor_os + '.c',
     'compat/fsmonitor/fsm-listen-' + fsmonitor_backend + '.c',
@@ -1374,7 +1377,7 @@ if not get_option('b_sanitize').contains('address') and get_option('regex').allo
 
   if compiler.get_define('REG_ENHANCED', prefix: '#include <regex.h>') != ''
     libgit_c_args += '-DUSE_ENHANCED_BASIC_REGULAR_EXPRESSIONS'
-    libgit_sources += 'compat/regcomp_enhanced.c'
+    compat_sources += 'compat/regcomp_enhanced.c'
   endif
 elif not get_option('regex').enabled()
   libgit_c_args += [
@@ -1383,7 +1386,7 @@ elif not get_option('regex').enabled()
     '-DNO_MBSUPPORT',
   ]
   build_options_config.set('NO_REGEX', '1')
-  libgit_sources += 'compat/regex/regex.c'
+  compat_sources += 'compat/regex/regex.c'
   libgit_include_directories += 'compat/regex'
 else
     error('Native regex support requested but not found')
@@ -1448,7 +1451,7 @@ else
 
   if get_option('b_sanitize').contains('address') or get_option('b_sanitize').contains('leak')
     libgit_c_args += '-DNO_MMAP'
-    libgit_sources += 'compat/mmap.c'
+    compat_sources += 'compat/mmap.c'
   else
     checkfuncs += { 'mmap': ['mmap.c'] }
   endif
@@ -1458,7 +1461,7 @@ foreach func, impls : checkfuncs
   if not compiler.has_function(func)
     libgit_c_args += '-DNO_' + func.to_upper()
     foreach impl : impls
-      libgit_sources += 'compat/' + impl
+      compat_sources += 'compat/' + impl
     endforeach
   endif
 endforeach
@@ -1469,13 +1472,13 @@ endif
 
 if not compiler.has_function('strdup')
   libgit_c_args += '-DOVERRIDE_STRDUP'
-  libgit_sources += 'compat/strdup.c'
+  compat_sources += 'compat/strdup.c'
 endif
 
 if not compiler.has_function('qsort')
   libgit_c_args += '-DINTERNAL_QSORT'
 endif
-libgit_sources += 'compat/qsort_s.c'
+compat_sources += 'compat/qsort_s.c'
 
 if compiler.has_function('getdelim')
   libgit_c_args += '-DHAVE_GETDELIM'
@@ -1531,7 +1534,7 @@ if meson.can_run_host_binaries() and compiler.run('''
   }
 ''', name: 'fread reads directories').returncode() == 0
   libgit_c_args += '-DFREAD_READS_DIRECTORIES'
-  libgit_sources += 'compat/fopen.c'
+  compat_sources += 'compat/fopen.c'
 endif
 
 if not meson.is_cross_build() and fs.exists('/dev/tty')
@@ -1765,14 +1768,23 @@ else
 endif
 
 libgit = declare_dependency(
-  link_with: static_library('git',
-    sources: libgit_sources,
-    c_args: libgit_c_args + [
-      '-DGIT_VERSION_H="' + version_def_h.full_path() + '"',
-    ],
-    dependencies: libgit_dependencies,
-    include_directories: libgit_include_directories,
-  ),
+  link_with: [
+    static_library('compat',
+      sources: compat_sources,
+      c_args: libgit_c_args,
+      dependencies: libgit_dependencies,
+      include_directories: libgit_include_directories,
+    ),
+    static_library('git',
+      sources: libgit_sources,
+      c_args: libgit_c_args + [
+        '-DGIT_VERSION_H="' + version_def_h.full_path() + '"',
+      ],
+      c_pch: [ 'tools/precompiled.h' ],
+      dependencies: libgit_dependencies,
+      include_directories: libgit_include_directories,
+    ),
+  ],
   compile_args: libgit_c_args,
   dependencies: libgit_dependencies,
   include_directories: libgit_include_directories,
@@ -1829,6 +1841,7 @@ test_dependencies = [ ]
 
 git_builtin = executable('git',
   sources: builtin_sources + 'git.c',
+  c_pch: [ 'tools/precompiled.h' ],
   dependencies: [libgit_commonmain],
   install: true,
   install_dir: git_exec_path,
@@ -1979,7 +1992,7 @@ foreach script : scripts_sh
     output: fs.stem(script),
     command: [
       shell,
-      meson.project_source_root() / 'generate-script.sh',
+      meson.project_source_root() / 'tools/generate-script.sh',
       '@INPUT@',
       '@OUTPUT@',
       meson.project_build_root() / 'GIT-BUILD-OPTIONS',
@@ -2028,7 +2041,7 @@ if perl_features_enabled
 
   generate_perl_command = [
     shell,
-    meson.project_source_root() / 'generate-perl.sh',
+    meson.project_source_root() / 'tools/generate-perl.sh',
     meson.project_build_root() / 'GIT-BUILD-OPTIONS',
     git_version_file.full_path(),
     perl_header,
@@ -2077,7 +2090,7 @@ if target_python.found()
       output: fs.stem(script),
       command: [
         shell,
-        meson.project_source_root() / 'generate-python.sh',
+        meson.project_source_root() / 'tools/generate-python.sh',
         meson.project_build_root() / 'GIT-BUILD-OPTIONS',
         '@INPUT@',
         '@OUTPUT@',
@@ -2169,6 +2182,7 @@ else
 endif
 
 subdir('contrib')
+subdir('tools')
 
 # Note that the target is intentionally configured after including the
 # 'contrib' directory, as some tool there also have their own manpages.
diff --git a/tools/README.md b/tools/README.md
new file mode 100644
index 0000000000..d732997136
--- /dev/null
+++ b/tools/README.md
@@ -0,0 +1,7 @@
+Developer Tooling
+-----------------
+
+This directory is expected to contain all sorts of tooling that
+relates to our build infrastructure. This includes scripts and
+inputs required by our build systems, but also scripts that
+developers are expected to run manually.
diff --git a/check-builtins.sh b/tools/check-builtins.sh
similarity index 100%
rename from check-builtins.sh
rename to tools/check-builtins.sh
diff --git a/contrib/coccinelle/.gitignore b/tools/coccinelle/.gitignore
similarity index 100%
rename from contrib/coccinelle/.gitignore
rename to tools/coccinelle/.gitignore
diff --git a/contrib/coccinelle/README b/tools/coccinelle/README
similarity index 98%
rename from contrib/coccinelle/README
rename to tools/coccinelle/README
index 055ad0e06a..fd0a543cc2 100644
--- a/contrib/coccinelle/README
+++ b/tools/coccinelle/README
@@ -38,7 +38,7 @@ that might be useful to developers.
    So to aid these large scale refactorings, semantic patches can be used.
    However we do not want to store them in the same place as the checks for
    bad patterns, as then automated builds would fail.
-   That is why semantic patches 'contrib/coccinelle/*.pending.cocci'
+   That is why semantic patches 'tools/coccinelle/*.pending.cocci'
    are ignored for checks, and can be applied using 'make coccicheck-pending'.
 
    This allows to expose plans of pending large scale refactorings without
diff --git a/contrib/coccinelle/array.cocci b/tools/coccinelle/array.cocci
similarity index 100%
rename from contrib/coccinelle/array.cocci
rename to tools/coccinelle/array.cocci
diff --git a/contrib/coccinelle/commit.cocci b/tools/coccinelle/commit.cocci
similarity index 100%
rename from contrib/coccinelle/commit.cocci
rename to tools/coccinelle/commit.cocci
diff --git a/contrib/coccinelle/config_fn_ctx.pending.cocci b/tools/coccinelle/config_fn_ctx.pending.cocci
similarity index 100%
rename from contrib/coccinelle/config_fn_ctx.pending.cocci
rename to tools/coccinelle/config_fn_ctx.pending.cocci
diff --git a/contrib/coccinelle/equals-null.cocci b/tools/coccinelle/equals-null.cocci
similarity index 100%
rename from contrib/coccinelle/equals-null.cocci
rename to tools/coccinelle/equals-null.cocci
diff --git a/contrib/coccinelle/flex_alloc.cocci b/tools/coccinelle/flex_alloc.cocci
similarity index 100%
rename from contrib/coccinelle/flex_alloc.cocci
rename to tools/coccinelle/flex_alloc.cocci
diff --git a/contrib/coccinelle/free.cocci b/tools/coccinelle/free.cocci
similarity index 100%
rename from contrib/coccinelle/free.cocci
rename to tools/coccinelle/free.cocci
diff --git a/contrib/coccinelle/git_config_number.cocci b/tools/coccinelle/git_config_number.cocci
similarity index 100%
rename from contrib/coccinelle/git_config_number.cocci
rename to tools/coccinelle/git_config_number.cocci
diff --git a/contrib/coccinelle/hashmap.cocci b/tools/coccinelle/hashmap.cocci
similarity index 100%
rename from contrib/coccinelle/hashmap.cocci
rename to tools/coccinelle/hashmap.cocci
diff --git a/contrib/coccinelle/index-compatibility.cocci b/tools/coccinelle/index-compatibility.cocci
similarity index 100%
rename from contrib/coccinelle/index-compatibility.cocci
rename to tools/coccinelle/index-compatibility.cocci
diff --git a/contrib/coccinelle/meson.build b/tools/coccinelle/meson.build
similarity index 100%
rename from contrib/coccinelle/meson.build
rename to tools/coccinelle/meson.build
diff --git a/contrib/coccinelle/object_id.cocci b/tools/coccinelle/object_id.cocci
similarity index 100%
rename from contrib/coccinelle/object_id.cocci
rename to tools/coccinelle/object_id.cocci
diff --git a/contrib/coccinelle/preincr.cocci b/tools/coccinelle/preincr.cocci
similarity index 100%
rename from contrib/coccinelle/preincr.cocci
rename to tools/coccinelle/preincr.cocci
diff --git a/contrib/coccinelle/qsort.cocci b/tools/coccinelle/qsort.cocci
similarity index 100%
rename from contrib/coccinelle/qsort.cocci
rename to tools/coccinelle/qsort.cocci
diff --git a/contrib/coccinelle/refs.cocci b/tools/coccinelle/refs.cocci
similarity index 100%
rename from contrib/coccinelle/refs.cocci
rename to tools/coccinelle/refs.cocci
diff --git a/contrib/coccinelle/spatchcache b/tools/coccinelle/spatchcache
similarity index 97%
rename from contrib/coccinelle/spatchcache
rename to tools/coccinelle/spatchcache
index 29e9352d8a..efbcbc3827 100755
--- a/contrib/coccinelle/spatchcache
+++ b/tools/coccinelle/spatchcache
@@ -30,7 +30,7 @@
 #	   out of control.
 #
 # This along with the general incremental "make" support for
-# "contrib/coccinelle" makes it viable to (re-)run coccicheck
+# "tools/coccinelle" makes it viable to (re-)run coccicheck
 # e.g. when merging integration branches.
 #
 # Note that the "--very-quiet" flag is currently critical. The cache
@@ -42,7 +42,7 @@
 # to change, so just supply "--very-quiet" for now.
 #
 # To use this, simply set SPATCH to
-# contrib/coccinelle/spatchcache. Then optionally set:
+# tools/coccinelle/spatchcache. Then optionally set:
 #
 #	[spatchCache]
 #		# Optional: path to a custom spatch
@@ -65,7 +65,7 @@
 #
 #	redis-cli FLUSHALL
 #	<make && make coccicheck, as above>
-#	grep -hore HIT -e MISS -e SET -e NOCACHE -e CANTCACHE .build/contrib/coccinelle | sort | uniq -c
+#	grep -hore HIT -e MISS -e SET -e NOCACHE -e CANTCACHE .build/tools/coccinelle | sort | uniq -c
 #	    600 CANTCACHE
 #	   7365 MISS
 #	   7365 SET
diff --git a/contrib/coccinelle/strbuf.cocci b/tools/coccinelle/strbuf.cocci
similarity index 100%
rename from contrib/coccinelle/strbuf.cocci
rename to tools/coccinelle/strbuf.cocci
diff --git a/contrib/coccinelle/swap.cocci b/tools/coccinelle/swap.cocci
similarity index 100%
rename from contrib/coccinelle/swap.cocci
rename to tools/coccinelle/swap.cocci
diff --git a/contrib/coccinelle/tests/free.c b/tools/coccinelle/tests/free.c
similarity index 100%
rename from contrib/coccinelle/tests/free.c
rename to tools/coccinelle/tests/free.c
diff --git a/contrib/coccinelle/tests/free.res b/tools/coccinelle/tests/free.res
similarity index 100%
rename from contrib/coccinelle/tests/free.res
rename to tools/coccinelle/tests/free.res
diff --git a/contrib/coccinelle/the_repository.cocci b/tools/coccinelle/the_repository.cocci
similarity index 100%
rename from contrib/coccinelle/the_repository.cocci
rename to tools/coccinelle/the_repository.cocci
diff --git a/contrib/coccinelle/xcalloc.cocci b/tools/coccinelle/xcalloc.cocci
similarity index 100%
rename from contrib/coccinelle/xcalloc.cocci
rename to tools/coccinelle/xcalloc.cocci
diff --git a/contrib/coccinelle/xopen.cocci b/tools/coccinelle/xopen.cocci
similarity index 100%
rename from contrib/coccinelle/xopen.cocci
rename to tools/coccinelle/xopen.cocci
diff --git a/contrib/coccinelle/xstrdup_or_null.cocci b/tools/coccinelle/xstrdup_or_null.cocci
similarity index 100%
rename from contrib/coccinelle/xstrdup_or_null.cocci
rename to tools/coccinelle/xstrdup_or_null.cocci
diff --git a/contrib/coccinelle/xstrncmpz.cocci b/tools/coccinelle/xstrncmpz.cocci
similarity index 100%
rename from contrib/coccinelle/xstrncmpz.cocci
rename to tools/coccinelle/xstrncmpz.cocci
diff --git a/contrib/coverage-diff.sh b/tools/coverage-diff.sh
similarity index 100%
rename from contrib/coverage-diff.sh
rename to tools/coverage-diff.sh
diff --git a/detect-compiler b/tools/detect-compiler
similarity index 100%
rename from detect-compiler
rename to tools/detect-compiler
diff --git a/generate-cmdlist.sh b/tools/generate-cmdlist.sh
similarity index 100%
rename from generate-cmdlist.sh
rename to tools/generate-cmdlist.sh
diff --git a/generate-configlist.sh b/tools/generate-configlist.sh
similarity index 100%
rename from generate-configlist.sh
rename to tools/generate-configlist.sh
diff --git a/generate-hooklist.sh b/tools/generate-hooklist.sh
similarity index 100%
rename from generate-hooklist.sh
rename to tools/generate-hooklist.sh
diff --git a/generate-perl.sh b/tools/generate-perl.sh
similarity index 100%
rename from generate-perl.sh
rename to tools/generate-perl.sh
diff --git a/generate-python.sh b/tools/generate-python.sh
similarity index 100%
rename from generate-python.sh
rename to tools/generate-python.sh
diff --git a/generate-script.sh b/tools/generate-script.sh
similarity index 100%
rename from generate-script.sh
rename to tools/generate-script.sh
diff --git a/tools/meson.build b/tools/meson.build
new file mode 100644
index 0000000000..f731f74312
--- /dev/null
+++ b/tools/meson.build
@@ -0,0 +1 @@
+subdir('coccinelle')
diff --git a/tools/precompiled.h b/tools/precompiled.h
new file mode 100644
index 0000000000..b2bec0d2b4
--- /dev/null
+++ b/tools/precompiled.h
@@ -0,0 +1 @@
+#include "git-compat-util.h"
diff --git a/contrib/update-unicode/.gitignore b/tools/update-unicode/.gitignore
similarity index 100%
rename from contrib/update-unicode/.gitignore
rename to tools/update-unicode/.gitignore
diff --git a/contrib/update-unicode/README b/tools/update-unicode/README
similarity index 100%
rename from contrib/update-unicode/README
rename to tools/update-unicode/README
diff --git a/contrib/update-unicode/update_unicode.sh b/tools/update-unicode/update_unicode.sh
similarity index 100%
rename from contrib/update-unicode/update_unicode.sh
rename to tools/update-unicode/update_unicode.sh