diff --git a/CMakeLists.txt b/CMakeLists.txt
index cdf7b60..9e6c510 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,34 +6,43 @@ set(CMAKE_C_STANDARD 23) # Would've done C99 but I need typeof (for now)
 set(CMAKE_C_STANDARD_REQUIRED ON)
 set(CMAKE_C_EXTENSIONS OFF)
 
-option(DCFG_BUILD_SHARED "Build DCFG as a shared library" ON)
-option(DCFG_BUILD_STATIC "Build DCFG as a static library" OFF)
+option(DCFG_BUILD_SHARED    "Build DCFG as a shared library" ON)
+option(DCFG_BUILD_STATIC    "Build DCFG as a static library" OFF)
+option(DCFG_PTHREAD_SUPPORT "Enable pthreads support"        ON)
 
-find_package(Threads REQUIRED)
+find_package(Threads)
 
-set(SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src)
+set(SRC_DIR     ${CMAKE_CURRENT_SOURCE_DIR}/src)
 set(INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/include)
 
 if(DCFG_BUILD_SHARED)
 	add_library(${PROJECT_NAME} SHARED ${SRC_DIR}/dcfg.c)
 	target_include_directories(${PROJECT_NAME} PUBLIC ${INCLUDE_DIR})
-	target_link_libraries(${PROJECT_NAME} PRIVATE Threads::Threads)
+
+	if(DCFG_PTHREAD_SUPPORT)
+		find_package(Threads REQUIRED)
+		target_link_libraries(${PROJECT_NAME} PRIVATE Threads::Threads)
+		target_compile_definitions(${PROJECT_NAME} PRIVATE DCFG_PTHREAD_SUPPORT)
+	endif()
+
 	set_target_properties(${PROJECT_NAME} PROPERTIES OUTPUT_NAME "dcfg")
+	install(TARGETS ${PROJECT_NAME} DESTINATION lib)
 endif()
 
 if(DCFG_BUILD_STATIC)
 	add_library(${PROJECT_NAME}_static STATIC ${SRC_DIR}/dcfg.c)
 	target_include_directories(${PROJECT_NAME}_static PUBLIC ${INCLUDE_DIR})
-	target_link_libraries(${PROJECT_NAME}_static PRIVATE Threads::Threads)
-	set_target_properties(${PROJECT_NAME}_static PROPERTIES OUTPUT_NAME "dcfg")
-endif()
 
-if(DCFG_BUILD_SHARED)
-	install(TARGETS ${PROJECT_NAME} DESTINATION lib)
-endif()
-if(DCFG_BUILD_STATIC)
+	if(DCFG_PTHREAD_SUPPORT)
+		find_package(Threads REQUIRED)
+		target_link_libraries(${PROJECT_NAME}_static PRIVATE Threads::Threads)
+		target_compile_definitions(${PROJECT_NAME}_static PRIVATE DCFG_PTHREAD_SUPPORT)
+	endif()
+
+	set_target_properties(${PROJECT_NAME}_static PROPERTIES OUTPUT_NAME "dcfg")
 	install(TARGETS ${PROJECT_NAME}_static DESTINATION lib)
 endif()
+
 install(DIRECTORY ${INCLUDE_DIR}/ DESTINATION include)
 
 if(MSVC)
@@ -41,4 +50,3 @@ if(MSVC)
 else()
 	target_compile_options(${PROJECT_NAME} PRIVATE -Wall -Wextra -pedantic -Werror -Wno-newline-eof)
 endif()
-
diff --git a/src/dcfg.c b/src/dcfg.c
index 2d8fa7f..47dc7c2 100644
--- a/src/dcfg.c
+++ b/src/dcfg.c
@@ -11,7 +11,18 @@
 #include <stdlib.h>
 #include <string.h>
 
+#ifdef DCFG_PTHREAD_SUPPORT
 #include <pthread.h>
+#else
+typedef struct {
+  int unused;
+} pthread_mutex_t;
+
+void pthread_mutex_init(pthread_mutex_t *, void *);
+void pthread_mutex_destroy(pthread_mutex_t *);
+void pthread_mutex_lock(pthread_mutex_t *);
+void pthread_mutex_unlock(pthread_mutex_t *);
+#endif
 
 int64_t dcfg_strtoll(const char *s, char **end, int base) {
   size_t n = strlen(s);