diff --git a/CMakeLists.txt b/CMakeLists.txt
index bb6cdf02d..8dfc6a8c0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,7 +6,7 @@
 
 cmake_minimum_required(VERSION 3.5.1)
 
-project(libgit2 VERSION "1.9.3" LANGUAGES C)
+project(libgit2 VERSION "1.9.4" LANGUAGES C)
 
 # Add find modules to the path
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${PROJECT_SOURCE_DIR}/cmake")
diff --git a/deps/xdiff/CMakeLists.txt b/deps/xdiff/CMakeLists.txt
index 743ac636f..82af0fad5 100644
--- a/deps/xdiff/CMakeLists.txt
+++ b/deps/xdiff/CMakeLists.txt
@@ -6,7 +6,7 @@ add_library(xdiff OBJECT ${SRC_XDIFF})
 target_include_directories(xdiff SYSTEM PRIVATE
 	"${PROJECT_SOURCE_DIR}/include"
 	"${PROJECT_SOURCE_DIR}/src/util"
-	"${PROJECT_BINARY_DIR}/src/util"
+	"${PROJECT_BINARY_DIR}/gen_headers"
 	${LIBGIT2_SYSTEM_INCLUDES}
 	${LIBGIT2_DEPENDENCY_INCLUDES})
 
diff --git a/docs/changelog.md b/docs/changelog.md
index 0615565a4..a35e9068d 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -1,3 +1,17 @@
+v1.9.4
+------
+
+This release includes a few small but important bugfixes.
+
+* cmake: separate generated headers from translated headers by
+  @ethomson in https://github.com/libgit2/libgit2/pull/7263
+* Avoid uninitialized variable warnings in gcc by @ethomson in
+  https://github.com/libgit2/libgit2/pull/7258
+* fix: Recognize relative worktrees extension by @cwill747 in
+  https://github.com/libgit2/libgit2/pull/7254
+* fix(sha256): thread-safety bug in builtin SHA-256 by @weihanglo in
+  https://github.com/libgit2/libgit2/pull/7266
+
 v1.9.3
 ------
 
diff --git a/include/git2/version.h b/include/git2/version.h
index 8b3d76c23..0df5418b8 100644
--- a/include/git2/version.h
+++ b/include/git2/version.h
@@ -21,7 +21,7 @@ GIT_BEGIN_DECL
  * The version string for libgit2.  This string follows semantic
  * versioning (v2) guidelines.
  */
-#define LIBGIT2_VERSION           "1.9.3"
+#define LIBGIT2_VERSION           "1.9.4"
 
 /** The major version number for this version of libgit2. */
 #define LIBGIT2_VERSION_MAJOR      1
@@ -30,7 +30,7 @@ GIT_BEGIN_DECL
 #define LIBGIT2_VERSION_MINOR      9
 
 /** The revision ("teeny") version number for this version of libgit2. */
-#define LIBGIT2_VERSION_REVISION   3
+#define LIBGIT2_VERSION_REVISION   4
 
 /** The Windows DLL patch number for this version of libgit2. */
 #define LIBGIT2_VERSION_PATCH      0
diff --git a/package.json b/package.json
index 8740e9bd5..6c4fa6ac9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "libgit2",
-  "version": "1.9.3",
+  "version": "1.9.4",
   "repo": "https://github.com/libgit2/libgit2",
   "description": " A cross-platform, linkable library implementation of Git that you can use in your application.",
   "install": "mkdir build && cd build && cmake .. && cmake --build ."
diff --git a/src/cli/CMakeLists.txt b/src/cli/CMakeLists.txt
index d121c588a..517ede8ca 100644
--- a/src/cli/CMakeLists.txt
+++ b/src/cli/CMakeLists.txt
@@ -1,9 +1,8 @@
 set(CLI_INCLUDES
-	"${libgit2_BINARY_DIR}/src/util"
-	"${libgit2_BINARY_DIR}/include"
 	"${libgit2_SOURCE_DIR}/src/util"
 	"${libgit2_SOURCE_DIR}/src/cli"
 	"${libgit2_SOURCE_DIR}/include"
+	"${libgit2_BINARY_DIR}/gen_headers"
 	"${LIBGIT2_DEPENDENCY_INCLUDES}"
 	"${LIBGIT2_SYSTEM_INCLUDES}")
 
diff --git a/src/cli/opt.c b/src/cli/opt.c
index c0880248e..c5def1930 100644
--- a/src/cli/opt.c
+++ b/src/cli/opt.c
@@ -359,7 +359,7 @@ GIT_INLINE(const cli_opt_spec *) spec_for_sort(
 	const char *arg)
 {
 	int is_negated, has_value = 0;
-	const char *value;
+	const char *value = NULL;
 	const cli_opt_spec *spec = NULL;
 	size_t idx = 0;
 
diff --git a/src/libgit2/CMakeLists.txt b/src/libgit2/CMakeLists.txt
index 6b76afbe6..8045ddef9 100644
--- a/src/libgit2/CMakeLists.txt
+++ b/src/libgit2/CMakeLists.txt
@@ -7,11 +7,10 @@ include(PkgBuildConfig)
 include(CMakePackageConfigHelpers)
 
 set(LIBGIT2_INCLUDES
-	"${PROJECT_BINARY_DIR}/src/util"
-	"${PROJECT_BINARY_DIR}/include"
 	"${PROJECT_SOURCE_DIR}/src/libgit2"
 	"${PROJECT_SOURCE_DIR}/src/util"
-	"${PROJECT_SOURCE_DIR}/include")
+	"${PROJECT_SOURCE_DIR}/include"
+	"${PROJECT_BINARY_DIR}/gen_headers")
 
 # Collect sourcefiles
 file(GLOB SRC_H
@@ -41,7 +40,11 @@ ide_split_sources(libgit2)
 list(APPEND LIBGIT2_OBJECTS $<TARGET_OBJECTS:util> $<TARGET_OBJECTS:libgit2> ${LIBGIT2_DEPENDENCY_OBJECTS})
 list(APPEND LIBGIT2_INCLUDES ${LIBGIT2_DEPENDENCY_INCLUDES})
 
-target_include_directories(libgit2 PRIVATE ${LIBGIT2_INCLUDES} ${LIBGIT2_DEPENDENCY_INCLUDES} PUBLIC ${PROJECT_SOURCE_DIR}/include)
+target_include_directories(libgit2
+	PRIVATE ${LIBGIT2_INCLUDES} ${LIBGIT2_DEPENDENCY_INCLUDES}
+	PUBLIC $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
+	       $<INSTALL_INTERFACE:include>)
+
 target_include_directories(libgit2 SYSTEM PRIVATE ${LIBGIT2_SYSTEM_INCLUDES})
 
 set(LIBGIT2_INCLUDES ${LIBGIT2_INCLUDES} PARENT_SCOPE)
@@ -55,6 +58,12 @@ set(LIBGIT2_SYSTEM_LIBS ${LIBGIT2_SYSTEM_LIBS} PARENT_SCOPE)
 # Compile and link libgit2
 #
 
+if (NOT BUILD_SHARED_LIBS AND XCODE_VERSION)
+	# This is required for Xcode to actually create the static libgit2 library
+	file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/dummy.c "")
+	list(APPEND LIBGIT2_OBJECTS ${CMAKE_CURRENT_BINARY_DIR}/dummy.c)
+endif()
+
 add_library(libgit2package ${SRC_RC} ${LIBGIT2_OBJECTS})
 target_link_libraries(libgit2package ${LIBGIT2_SYSTEM_LIBS})
 target_include_directories(libgit2package SYSTEM PRIVATE ${LIBGIT2_INCLUDES})
@@ -94,15 +103,23 @@ endif()
 
 # support experimental features and functionality
 
-configure_file(experimental.h.in "${PROJECT_BINARY_DIR}/include/git2/experimental.h")
+configure_file(experimental.h.in "${PROJECT_BINARY_DIR}/gen_headers/experimental.h")
 
-# translate filenames in the git2.h so that they match the install directory
+# translate filenames in the headers so that they match the install directory
 # (allows for side-by-side installs of libgit2 and libgit2-experimental.)
 
-file(READ "${PROJECT_SOURCE_DIR}/include/git2.h" LIBGIT2_INCLUDE)
-string(REGEX REPLACE "#include \"git2\/" "#include \"${LIBGIT2_FILENAME}/" LIBGIT2_INCLUDE "${LIBGIT2_INCLUDE}")
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/${LIBGIT2_FILENAME}.h.tmp" ${LIBGIT2_INCLUDE})
-configure_file("${CMAKE_CURRENT_BINARY_DIR}/${LIBGIT2_FILENAME}.h.tmp" "${PROJECT_BINARY_DIR}/include/${LIBGIT2_FILENAME}.h" COPYONLY)
+foreach(HEADER_SOURCE ${SRC_H})
+	file(RELATIVE_PATH HEADER_RELATIVE ${PROJECT_SOURCE_DIR} ${HEADER_SOURCE})
+	string(REGEX REPLACE "^include\/git2" "include/${LIBGIT2_FILENAME}" HEADER_RELATIVE ${HEADER_RELATIVE})
+
+	file(READ "${HEADER_SOURCE}" HEADER_CONTENTS)
+	string(REGEX REPLACE "#include \"git2\/" "#include \"${LIBGIT2_FILENAME}/" HEADER_CONTENTS "${HEADER_CONTENTS}")
+
+	file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/${HEADER_RELATIVE}.tmp" "${HEADER_CONTENTS}")
+	configure_file("${CMAKE_CURRENT_BINARY_DIR}/${HEADER_RELATIVE}.tmp" "${PROJECT_BINARY_DIR}/${HEADER_RELATIVE}" COPYONLY)
+endforeach()
+
+configure_file("${PROJECT_BINARY_DIR}/gen_headers/experimental.h" "${PROJECT_BINARY_DIR}/include/${LIBGIT2_FILENAME}/experimental.h" COPYONLY)
 
 # cmake package targets
 
@@ -133,9 +150,7 @@ install(TARGETS libgit2package
 	RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
 	LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
 	ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
-install(DIRECTORY ${PROJECT_SOURCE_DIR}/include/git2/
-        DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${LIBGIT2_FILENAME}")
-install(FILES ${PROJECT_BINARY_DIR}/include/git2/experimental.h
-        DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${LIBGIT2_FILENAME}")
 install(FILES "${PROJECT_BINARY_DIR}/include/${LIBGIT2_FILENAME}.h"
         DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
+install(DIRECTORY "${PROJECT_BINARY_DIR}/include/${LIBGIT2_FILENAME}"
+        DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
diff --git a/src/libgit2/index.c b/src/libgit2/index.c
index 2ea8f0c4b..9b0c746ca 100644
--- a/src/libgit2/index.c
+++ b/src/libgit2/index.c
@@ -1225,7 +1225,7 @@ static int canonicalize_directory_path(
 {
 	const git_index_entry *match, *best = NULL;
 	char *search, *sep;
-	size_t pos, search_len, best_len;
+	size_t pos, search_len, best_len = 0;
 
 	if (!index->ignore_case)
 		return 0;
diff --git a/src/libgit2/midx.c b/src/libgit2/midx.c
index 939e667be..6d90e4af6 100644
--- a/src/libgit2/midx.c
+++ b/src/libgit2/midx.c
@@ -460,7 +460,7 @@ int git_midx_foreach_entry(
 {
 	git_oid oid;
 	size_t oid_size, i;
-	int error;
+	int error = 0;
 
 	GIT_ASSERT_ARG(idx);
 
diff --git a/src/libgit2/repository.c b/src/libgit2/repository.c
index 6c86c2de5..9fed12cd7 100644
--- a/src/libgit2/repository.c
+++ b/src/libgit2/repository.c
@@ -1865,7 +1865,8 @@ static const char *builtin_extensions[] = {
 	"noop",
 	"objectformat",
 	"worktreeconfig",
-	"preciousobjects"
+	"preciousobjects",
+	"relativeworktrees"
 };
 
 static git_vector user_extensions = { 0, git__strcmp_cb };
diff --git a/src/util/CMakeLists.txt b/src/util/CMakeLists.txt
index 3692dc3d3..062e0c6c8 100644
--- a/src/util/CMakeLists.txt
+++ b/src/util/CMakeLists.txt
@@ -2,13 +2,12 @@
 
 add_library(util OBJECT)
 
-configure_file(git2_features.h.in git2_features.h)
+configure_file(git2_features.h.in "${PROJECT_BINARY_DIR}/gen_headers/git2_features.h")
 
 set(UTIL_INCLUDES
-	"${PROJECT_BINARY_DIR}/src/util"
-	"${PROJECT_BINARY_DIR}/include"
 	"${PROJECT_SOURCE_DIR}/src/util"
-	"${PROJECT_SOURCE_DIR}/include")
+	"${PROJECT_SOURCE_DIR}/include"
+	"${PROJECT_BINARY_DIR}/gen_headers")
 
 file(GLOB UTIL_SRC *.c *.h allocators/*.c allocators/*.h hash.h)
 list(SORT UTIL_SRC)
diff --git a/src/util/hash/rfc6234/sha224-256.c b/src/util/hash/rfc6234/sha224-256.c
index c8e0cf854..ad965347f 100644
--- a/src/util/hash/rfc6234/sha224-256.c
+++ b/src/util/hash/rfc6234/sha224-256.c
@@ -83,12 +83,14 @@
  * Add "length" to the length.
  * Set Corrupted when overflow has occurred.
  */
-static uint32_t addTemp;
-#define SHA224_256AddLength(context, length)               \
-  (addTemp = (context)->Length_Low, (context)->Corrupted = \
-    (((context)->Length_Low += (length)) < addTemp) &&     \
-    (++(context)->Length_High == 0) ? shaInputTooLong :    \
-                                      (context)->Corrupted )
+static int SHA224_256AddLength(SHA256Context *context, unsigned int length)
+{
+  uint32_t addTemp = context->Length_Low;
+  context->Length_Low += length;
+  if (context->Length_Low < addTemp && ++context->Length_High == 0)
+    context->Corrupted = shaInputTooLong;
+  return context->Corrupted;
+}
 
 /* Local Function Prototypes */
 static int SHA224_256Reset(SHA256Context *context, uint32_t *H0);
diff --git a/src/util/hashmap.h b/src/util/hashmap.h
index c29844f38..e34052776 100644
--- a/src/util/hashmap.h
+++ b/src/util/hashmap.h
@@ -107,6 +107,7 @@ typedef uint32_t git_hashmap_iter_t;
 	} \
 	GIT_INLINE(int) name##__idx(uint32_t *out, name *h, key_t key) \
 	{ \
+		*out = UINT32_MAX; \
 		if (h->n_buckets) { \
 			uint32_t k, i, last, mask, step = 0; \
 			GIT_ASSERT((h)->flags); \
diff --git a/src/util/runtime.c b/src/util/runtime.c
index a7711ffc4..ff3037bb6 100644
--- a/src/util/runtime.c
+++ b/src/util/runtime.c
@@ -16,7 +16,7 @@ static git_atomic32 init_count;
 static int init_common(git_runtime_init_fn init_fns[], size_t cnt)
 {
 	size_t i;
-	int ret;
+	int ret = 0;
 
 	/* Initialize subsystems that have global state */
 	for (i = 0; i < cnt; i++) {
@@ -110,7 +110,7 @@ GIT_INLINE(int) init_unlock(void)
 
 int git_runtime_init(git_runtime_init_fn init_fns[], size_t cnt)
 {
-	int ret;
+	int ret = 0;
 
 	if (init_lock() < 0)
 		return -1;
diff --git a/tests/libgit2/core/opts.c b/tests/libgit2/core/opts.c
index 1580fb2f5..9fc94f96f 100644
--- a/tests/libgit2/core/opts.c
+++ b/tests/libgit2/core/opts.c
@@ -34,11 +34,12 @@ void test_core_opts__extensions_query(void)
 
 	cl_git_pass(git_libgit2_opts(GIT_OPT_GET_EXTENSIONS, &out));
 
-	cl_assert_equal_sz(out.count, 4);
+	cl_assert_equal_sz(out.count, 5);
 	cl_assert_equal_s("noop", out.strings[0]);
 	cl_assert_equal_s("objectformat", out.strings[1]);
 	cl_assert_equal_s("preciousobjects", out.strings[2]);
-	cl_assert_equal_s("worktreeconfig", out.strings[3]);
+	cl_assert_equal_s("relativeworktrees", out.strings[3]);
+	cl_assert_equal_s("worktreeconfig", out.strings[4]);
 
 	git_strarray_dispose(&out);
 }
@@ -51,12 +52,13 @@ void test_core_opts__extensions_add(void)
 	cl_git_pass(git_libgit2_opts(GIT_OPT_SET_EXTENSIONS, in, ARRAY_SIZE(in)));
 	cl_git_pass(git_libgit2_opts(GIT_OPT_GET_EXTENSIONS, &out));
 
-	cl_assert_equal_sz(out.count, 5);
+	cl_assert_equal_sz(out.count, 6);
 	cl_assert_equal_s("foo", out.strings[0]);
 	cl_assert_equal_s("noop", out.strings[1]);
 	cl_assert_equal_s("objectformat", out.strings[2]);
 	cl_assert_equal_s("preciousobjects", out.strings[3]);
-	cl_assert_equal_s("worktreeconfig", out.strings[4]);
+	cl_assert_equal_s("relativeworktrees", out.strings[4]);
+	cl_assert_equal_s("worktreeconfig", out.strings[5]);
 
 	git_strarray_dispose(&out);
 }
@@ -69,12 +71,13 @@ void test_core_opts__extensions_remove(void)
 	cl_git_pass(git_libgit2_opts(GIT_OPT_SET_EXTENSIONS, in, ARRAY_SIZE(in)));
 	cl_git_pass(git_libgit2_opts(GIT_OPT_GET_EXTENSIONS, &out));
 
-	cl_assert_equal_sz(out.count, 5);
+	cl_assert_equal_sz(out.count, 6);
 	cl_assert_equal_s("bar", out.strings[0]);
 	cl_assert_equal_s("baz", out.strings[1]);
 	cl_assert_equal_s("objectformat", out.strings[2]);
 	cl_assert_equal_s("preciousobjects", out.strings[3]);
-	cl_assert_equal_s("worktreeconfig", out.strings[4]);
+	cl_assert_equal_s("relativeworktrees", out.strings[4]);
+	cl_assert_equal_s("worktreeconfig", out.strings[5]);
 
 	git_strarray_dispose(&out);
 }
@@ -87,13 +90,14 @@ void test_core_opts__extensions_uniq(void)
 	cl_git_pass(git_libgit2_opts(GIT_OPT_SET_EXTENSIONS, in, ARRAY_SIZE(in)));
 	cl_git_pass(git_libgit2_opts(GIT_OPT_GET_EXTENSIONS, &out));
 
-	cl_assert_equal_sz(out.count, 6);
+	cl_assert_equal_sz(out.count, 7);
 	cl_assert_equal_s("bar", out.strings[0]);
 	cl_assert_equal_s("foo", out.strings[1]);
 	cl_assert_equal_s("noop", out.strings[2]);
 	cl_assert_equal_s("objectformat", out.strings[3]);
 	cl_assert_equal_s("preciousobjects", out.strings[4]);
-	cl_assert_equal_s("worktreeconfig", out.strings[5]);
+	cl_assert_equal_s("relativeworktrees", out.strings[5]);
+	cl_assert_equal_s("worktreeconfig", out.strings[6]);
 
 	git_strarray_dispose(&out);
 }
diff --git a/tests/libgit2/repo/extensions.c b/tests/libgit2/repo/extensions.c
index cb62c53a8..5b70c8bff 100644
--- a/tests/libgit2/repo/extensions.c
+++ b/tests/libgit2/repo/extensions.c
@@ -80,3 +80,13 @@ void test_repo_extensions__preciousobjects(void)
 	cl_git_pass(git_repository_open(&extended, "empty_bare.git"));
 	git_repository_free(extended);
 }
+
+void test_repo_extensions__relativeworktrees(void)
+{
+	git_repository *extended = NULL;
+
+	cl_repo_set_string(repo, "extensions.relativeWorktrees", "true");
+
+	cl_git_pass(git_repository_open(&extended, "empty_bare.git"));
+	git_repository_free(extended);
+}