diff --git a/CMakeLists.txt b/CMakeLists.txt
index 31b5c87..1cfeefc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -36,6 +36,11 @@ add_custom_command(OUTPUT ${LEX_GENERATED_SOURCE_FILE}
         COMMENT "generate C source file for lexer"
         VERBATIM)
 
+# remove dependency when compiling with MSVC on windows
+if (MSVC)
+    add_compile_definitions(YY_NO_UNISTD_H)
+endif()
+
 # ------------------------------------------------ #
 #  Yacc                                            #
 # ------------------------------------------------ #
@@ -56,7 +61,11 @@ add_custom_command(OUTPUT ${YACC_GENERATED_SOURCE_FILE}
 file(GLOB_RECURSE SOURCE_FILES src/*.c)
 
 # define default compile flags
-set(FLAGS -Wall -Wextra -Wconversion -Wpedantic)
+if (MSVC)
+    set(FLAGS /Wall /W3 /permissive)
+else()
+    set(FLAGS -Wall -Wextra -Wconversion -Wpedantic)
+endif()
 
 # ------------------------------------------------ #
 #  Target RELEASE                                  #
@@ -72,13 +81,20 @@ set_target_properties(release
         OUTPUT_NAME "gsc"
         RUNTIME_OUTPUT_DIRECTORY "bin/release")
 
+# FIXME: cannot compile with /O2 because of /RTC1 flag
+if (MSVC)
+    set(RELEASE_FLAGS)
+else()
+    set(RELEASE_FLAGS -m64 -O3 -fprefetch-loop-arrays -mrecip)
+endif()
+
 # compiler flags targeting a 64-bit GCC release environment
 # flags:
 #  - m64: build for 64-bit
 #  - O3: optimization level 3
 #  - fprefetch-loop-arrays: pre load arrays used in loops by using prefetch instruction
 #  - mrecip: make use RCPSS and RSQRTSS instructions
-target_compile_options(release PUBLIC ${FLAGS} -m64 -O3 -fprefetch-loop-arrays -mrecip)
+target_compile_options(release PUBLIC ${FLAGS} ${RELEASE_FLAGS})
 
 # add src directory as include path
 target_include_directories(release PUBLIC src)
@@ -97,8 +113,14 @@ set_target_properties(debug
         OUTPUT_NAME "gsc"
         RUNTIME_OUTPUT_DIRECTORY "bin/debug")
 
+if (MSVC)
+    set(DEBUG_FLAGS /DEBUG)
+else()
+    set(DEBUG_FLAGS -g)
+endif()
+
 # compiler flags targeting a GCC debug environment
-target_compile_options(debug PUBLIC ${FLAGS} -g)
+target_compile_options(debug PUBLIC ${FLAGS} ${DEBUG_FLAGS})
 
 # add src directory as include path
 target_include_directories(debug PUBLIC src)
@@ -120,9 +142,15 @@ set_target_properties(check
         OUTPUT_NAME "gsc"
         RUNTIME_OUTPUT_DIRECTORY "bin/check")
 
+if (MSVC)
+    set(CHECK_FLAGS /DEBUG /WX)
+else()
+    set(DEBUG_FLAGS -g -Werror)
+endif()
+
 # compiler flags targeting a GCC debug environment
 # extra -Werror flag to treat warnings as error to make github action fail on warning
-target_compile_options(check PUBLIC ${FLAGS} -g -Werror)
+target_compile_options(check PUBLIC ${FLAGS} ${DEBUG_FLAGS})
 
 # add src directory as include path
 target_include_directories(check PUBLIC src)
diff --git a/README.md b/README.md
index 854f2f2..a1e442b 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,25 @@
 
 Gemstone is a programming language compiler written in C with lex and yacc.
 
+## Dependencies (build)
+
+### Windows 11
+
+For setup instruction see issue #30
+
+Requires:
+- Microsoft Build Tools 2022 (includes: CMake, MSVC)
+- WinFlexBison [find it here](https://github.com/lexxmark/winflexbison) (needs to be in PATH)
+
+### GNU/Linux
+
+Requires:
+- GCC
+- CMake
+- Make
+- bison
+- flex
+
 ## Development with VSCode/Codium
 
 Recommended extensions for getting a decent experience are the following:
@@ -55,4 +74,4 @@ Currently, the SDK is based on Almalinux 9.3, an open source distro binary compa
 
 The following images can be found in the offical repository at [Docker Hub](https://hub.docker.com/r/servostar/gemstone):
 - SDK
-- Devkit
\ No newline at end of file
+- Devkit
diff --git a/src/sys/log.h b/src/sys/log.h
index 691a38e..aa18c88 100644
--- a/src/sys/log.h
+++ b/src/sys/log.h
@@ -24,7 +24,7 @@
 // generally not defined by GCC < 11.3 and MSVC
 #ifndef __FILE_NAME__
 #if defined(_WIN32) || defined(_WIN64) || defined(_MSC_VER)
-#define __FILE_NAME__ (strrstr(__FILE__, "\\") ? strrstr(__FILE__, "\\") + 1 : __FILE__)
+#define __FILE_NAME__ (strrchr(__FILE__, '\\') ? strrchr(__FILE__, '\\') + 1 : __FILE__)
 #else
 #define __FILE_NAME__ (strrchr(__FILE__, '/') ? strrchr(__FILE__, '/') + 1 : __FILE__)
 #endif