diff --git a/README.md b/README.md
index ac4047b..d16fdfe 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,14 @@ git clone --recurse-submodules https://timerix.ddns.net:3322/Timerix/ougge.git
     Location of the headers can be found by `pkg-config --cflags --libs sdl2`. 
     Mingw installs SDL2 headers to `/mingw64/include/SDL2`. 
 5. Install [mono](https://github.com/mono/mono).
+    
+    **Windows:**
+    1. Install mono from official website
+    2. Copy `*.dll` files from `C:\Program Files\Mono\bin` to `dependencies/precompiled/`  
+    3. Copy `config` from `C:\Program Files\Mono\etc\mono` to `dependencies/precompiled/mono-libs` and rename to `config.xml`
+    4. Copy `mscorlib.dll` from `C:\Program Files\Mono\lib\mono\4.5\` to `dependencies/precompiled/mono-libs`
+
+    **Linux:**
     1. Download and extract [sources](https://download.mono-project.com/sources/mono/index.html)
         ```sh
         mkdir mono
@@ -42,6 +50,7 @@ git clone --recurse-submodules https://timerix.ddns.net:3322/Timerix/ougge.git
         cd ..
         cbuild get_mono_files_from=mono/mono_prefix
         ```
+    5. Now you can delete `mono` directory and save 3 gigabytes of disk space :3
 7. Compile the program
     ```sh
     cbuild build_exec_dbg
diff --git a/dependencies/precompiled.config b/dependencies/precompiled.config
index 6733da2..6591c2e 100644
--- a/dependencies/precompiled.config
+++ b/dependencies/precompiled.config
@@ -11,12 +11,12 @@ PRESERVE_OUT_DIRECTORY_STRUCTURE=true
 # will be copied tp project $OUTDIR
 case $OS in
     WINDOWS)
-        DEP_DYNAMIC_OUT_FILES="$(find dependencies/precompiled -name '*.dll' | sed 's,dependencies/precompiled/,,')"
-        DEP_OTHER_OUT_FILES=""
+        DEP_DYNAMIC_OUT_FILES=$(find dependencies/precompiled -maxdepth 1 -name '*.dll' | sed 's,dependencies/precompiled/,,')
+        DEP_OTHER_OUT_FILES="mono-libs/mscorlib.dll mono-libs/config.xml"
+        # DEP_STATIC_OUT_FILES+=" mono-libs/libmono-static-sgen.lib"
         ;;
     LINUX)
-        DEP_DYNAMIC_OUT_FILES="$(find dependencies/precompiled -name '*.so' | sed 's,dependencies/precompiled/,,')
-        $(find dependencies/precompiled -name '*.so.*' | sed 's,dependencies/precompiled/,,')"
+        DEP_DYNAMIC_OUT_FILES=$(find dependencies/precompiled -name '*.so' | sed 's,dependencies/precompiled/,,')
         DEP_OTHER_OUT_FILES="mono-libs/mscorlib.dll mono-libs/config.xml"
         ;;
     *)
diff --git a/project.config b/project.config
index 9795e05..407c39b 100644
--- a/project.config
+++ b/project.config
@@ -58,7 +58,7 @@ case "$TASK" in
         # -fprofile-use enables compiler to use profiling info files to optimize executable
         # -fprofile-prefix-path sets path where profiling info about objects are be saved
         # -fdata-sections -ffunction-sections -Wl,--gc-sections  removes unused code
-        C_ARGS="-rdynamic -O2 -flto=auto -fuse-linker-plugin -fprofile-use -fprofile-prefix-path=$(realpath $OBJDIR)/objects -fdata-sections -ffunction-sections -Wl,--gc-sections"
+        C_ARGS="-O2 -flto=auto -fuse-linker-plugin -fprofile-use -fprofile-prefix-path=$(realpath $OBJDIR)/objects -fdata-sections -ffunction-sections -Wl,--gc-sections"
         CPP_ARGS="$C_ARGS"
         LINKER_ARGS="$CPP_ARGS $LINKER_LIBS"
         PRE_TASK_SCRIPT=
@@ -67,16 +67,16 @@ case "$TASK" in
         ;;
     # creates executable with debug info and no optimizations
     build_exec_dbg)
-        C_ARGS="-rdynamic -O0 -g3"
+        C_ARGS="-O0 -g3"
         CPP_ARGS="$C_ARGS"
-        LINKER_ARGS="$CPP_ARGS $LINKER_LIBS -Wl,-rpath=mono-libs"
+        LINKER_ARGS="$CPP_ARGS $LINKER_LIBS"
         PRE_TASK_SCRIPT=
         TASK_SCRIPT=cbuild/default_tasks/build_exec.sh
         POST_TASK_SCRIPT=
         ;;
     # creates shared library
     build_shared_lib)
-        C_ARGS="-rdynamic -O2 -fpic -flto -shared"
+        C_ARGS="-O2 -fpic -flto -shared"
         CPP_ARGS="$C_ARGS"
         LINKER_ARGS="$CPP_ARGS $LINKER_LIBS -Wl,-soname,$SHARED_LIB_FILE"
         PRE_TASK_SCRIPT=
@@ -85,7 +85,7 @@ case "$TASK" in
         ;;
     # creates shared library with debug symbols and no optimizations
     build_shared_lib_dbg)
-        C_ARGS="-rdynamic -O0 -g3 -fpic -shared"
+        C_ARGS="-O0 -g3 -fpic -shared"
         CPP_ARGS="$C_ARGS"
         LINKER_ARGS="$CPP_ARGS $LINKER_LIBS -Wl,-soname,$SHARED_LIB_FILE"
         PRE_TASK_SCRIPT=
@@ -94,7 +94,7 @@ case "$TASK" in
         ;;
     # creates static library
     build_static_lib)
-        C_ARGS="-rdynamic -O2 -fpic -fdata-sections -ffunction-sections"
+        C_ARGS="-O2 -fpic -fdata-sections -ffunction-sections"
         CPP_ARGS="$C_ARGS"
         PRE_TASK_SCRIPT=
         TASK_SCRIPT=cbuild/default_tasks/build_static_lib.sh
@@ -102,7 +102,7 @@ case "$TASK" in
         ;;
     # creates static library with debug symbols and no optimizations
     build_static_lib_dbg)
-        C_ARGS="-rdynamic -O0 -g3"
+        C_ARGS="-O0 -g3"
         CPP_ARGS="$C_ARGS"
         PRE_TASK_SCRIPT=
         TASK_SCRIPT=cbuild/default_tasks/build_static_lib.sh
@@ -126,7 +126,7 @@ case "$TASK" in
         # -pg adds code to executable, that generates file containing function call info (gmon.out)
         # -fprofile-generate generates executable with profiling code
         # -fprofile-prefix-path sets path where profiling info about objects will be saved
-        C_ARGS="-rdynamic -O2 -flto=auto -fuse-linker-plugin -fprofile-generate -fprofile-prefix-path=$(realpath $OBJDIR)/objects"
+        C_ARGS="-O2 -flto=auto -fuse-linker-plugin -fprofile-generate -fprofile-prefix-path=$(realpath $OBJDIR)/objects"
         CPP_ARGS="$C_ARGS"
         LINKER_ARGS="$CPP_ARGS $LINKER_LIBS"
         PRE_TASK_SCRIPT=cbuild/default_tasks/build_exec.sh
@@ -139,7 +139,7 @@ case "$TASK" in
     gprof)
         OUTDIR="$OUTDIR/gprof"
         # -pg adds code to executable, that generates file containing function call info (gmon.out)
-        C_ARGS="-rdynamic -O2 -flto=auto -fuse-linker-plugin -pg"
+        C_ARGS="-O2 -flto=auto -fuse-linker-plugin -pg"
         CPP_ARGS="$C_ARGS"
         LINKER_ARGS="$CPP_ARGS $LINKER_LIBS"
         PRE_TASK_SCRIPT=cbuild/default_tasks/build_exec.sh
@@ -153,7 +153,7 @@ case "$TASK" in
     callgrind)
         OUTDIR="$OUTDIR/callgrind"
         # -pg adds code to executable, that generates file containing function call info (gmon.out)
-        C_ARGS="-rdynamic -O2 -flto=auto -fuse-linker-plugin"
+        C_ARGS="-O2 -flto=auto -fuse-linker-plugin"
         CPP_ARGS="$C_ARGS"
         LINKER_ARGS="$CPP_ARGS $LINKER_LIBS"
         PRE_TASK_SCRIPT=cbuild/default_tasks/build_exec.sh
@@ -163,7 +163,7 @@ case "$TASK" in
     # compiles executable with sanitizers and executes it to find errors and warnings
     sanitize)
         OUTDIR="$OUTDIR/sanitize"
-        C_ARGS="-rdynamic -O0 -g3 -fsanitize=undefined,address"
+        C_ARGS="-O0 -g3 -fsanitize=undefined,address"
         CPP_ARGS="$C_ARGS"
         LINKER_ARGS="$CPP_ARGS $LINKER_LIBS"
         PRE_TASK_SCRIPT=cbuild/default_tasks/build_exec.sh
diff --git a/src/GUI/MainWindow.cpp b/src/GUI/MainWindow.cpp
index 034cfa5..40d342c 100644
--- a/src/GUI/MainWindow.cpp
+++ b/src/GUI/MainWindow.cpp
@@ -6,6 +6,7 @@
 #include "../format.hpp"
 #include "../Resources/fonts.hpp"
 #include "../Resources/textures.hpp"
+#include "../math.hpp"
 
 namespace ougge::GUI {
 
diff --git a/src/math.hpp b/src/math.hpp
index 8c93b70..a0a7128 100644
--- a/src/math.hpp
+++ b/src/math.hpp
@@ -3,6 +3,22 @@
 #include "std.hpp"
 #include <cmath>
 
+#ifndef M_PI
+    #define M_E		2.7182818284590452354
+    #define M_LOG2E		1.4426950408889634074
+    #define M_LOG10E	0.43429448190325182765
+    #define M_LN2		0.69314718055994530942
+    #define M_LN10		2.30258509299404568402
+    #define M_PI		3.14159265358979323846
+    #define M_PI_2		1.57079632679489661923
+    #define M_PI_4		0.78539816339744830962
+    #define M_1_PI		0.31830988618379067154
+    #define M_2_PI		0.63661977236758134308
+    #define M_2_SQRTPI	1.12837916709551257390
+    #define M_SQRT2		1.41421356237309504880
+    #define M_SQRT1_2	0.70710678118654752440
+#endif
+
 struct Vec2 {
     f32 x = 0, y = 0;
 };
diff --git a/tasks/get_mono_files_from.sh b/tasks/get_mono_files_from.sh
index dc48947..6bccfdc 100644
--- a/tasks/get_mono_files_from.sh
+++ b/tasks/get_mono_files_from.sh
@@ -32,6 +32,11 @@ case "$OS" in
             mv -v "$l" "dependencies/precompiled/mono-libs/$soname_without_version"
         done
         
+        myprint "${BLUE}stripping debug symbols from mono shared libraries"
+        for l in $(find "dependencies/precompiled/mono-libs" -name '*.so') ; do
+            strip -g "$l"
+        done
+
         # copy mono c# libraries
         managed_libraries="mscorlib.dll"
         myprint "${BLUE}copying mono managed libraries"