diff --git a/Makefile b/Makefile
index 928a4c4..18f0733 100644
--- a/Makefile
+++ b/Makefile
@@ -26,33 +26,27 @@ CXX = g++
 INCLUDES = -Iinclude
 OUTPUT = stocksim
 CXXFLAGS += -Wall -Wextra -pedantic -std=c++17 -Werror -g \
-	-Wcast-qual -Wundef -Wswitch -Wshadow -Wold-style-cast
+	-Wcast-qual -Wundef -Wswitch -Wshadow
 	# -Wconversion -Wfloat-equal
 	# -fsanitize=address -fsanitize=undefined
 
-# MinGW does not support -static-pie
 ifeq ($(OS),Windows_NT)
 # -pthread needed for clang++ on Windows
 ifeq ($(CXX),clang++)
-CXXFLAGS += -pthread
-endif
-CXXFLAGS += -static
-else ifeq ($(CXX),g++)
-ifeq ($(shell uname),Linux)
-CXXFLAGS += -static-pie -fPIE
+	CXXFLAGS += -pthread
 endif
+	CXXFLAGS += -static
 endif
 
-# Security flags for Linux
 ifeq ($(shell uname),Linux)
 ifneq ($(CXX),cosmoc++)
-CXXFLAGS += -z noexecstack -z relro -z now
+	CXXFLAGS += -z relro -z now -static-pie -fPIE
 endif
 endif
 
 # Clang will warn about unused command line arguments.
 ifeq ($(CXX),clang++)
-CXXFLAGS += -Wno-error=unused-command-line-argument
+	CXXFLAGS += -Wno-error=unused-command-line-argument
 endif
 
 default: stocksim
@@ -139,14 +133,14 @@ endif
 
 # -GL can further reduce size, but more likely to flag as malicious
 msvc: src/*.cpp include/*.h clean
-	cl -std:c++17 -EHsc -utf-8 -Iinclude -W1 -WX -O1 -guard:cf -MP \
+	cl -std:c++17 -EHsc -utf-8 $(INCLUDES) -W1 -WX -O1 -guard:cf -MP \
 		src/*.cpp -Fe:$(OUTPUT)
 	rm *.obj || true
 
 format-check:
 	clang-format --dry-run --Werror src/*.cpp include/*.h
 	clang-tidy src/*.cpp --checks=performance-*,-performance-avoid-endl,readability-*,bugprone-*,portability-*,cert-* \
-		--fix-errors --fix-notes --format-style=file -- -Iinclude
+		--fix-errors --fix-notes --format-style=file -- $(INCLUDES)
 
 input-check:
 	echo -e "1\ntest\nX\nY\n" | ./$(OUTPUT)
@@ -157,11 +151,11 @@ input-check:
 # cosmopolitan c++ compiler does not support -flto and stack protector
 ifeq ($(MAKECMDGOALS),release)
 ifneq ($(CXX),cosmoc++)
-CXXFLAGS += -fstack-protector-strong
+	CXXFLAGS += -fstack-protector-strong
 ifneq ($(CXX),clang++)
-CXXFLAGS += -flto
+	CXXFLAGS += -flto
 else ifneq ($(OS),Windows_NT)
-CXXFLAGS += -flto
+	CXXFLAGS += -flto
 endif
 endif
 endif
diff --git a/src/main.cpp b/src/main.cpp
index fc1e47d..9fdf2a9 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -19,18 +19,10 @@ program. If not, see <https://www.gnu.org/licenses/>.
 #include "file_io.h"
 #include "format.h"
 #include "graph.h"
+#include "nonstdlibs/VariadicTable.h"
 #include "random_price.h"
 #include "stock.h"
 
-#if defined(__GNUC__) || defined(__clang__)
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wold-style-cast"
-#endif
-#include "nonstdlibs/VariadicTable.h"
-#if defined(__GNUC__) || defined(__clang__)
-#pragma GCC diagnostic pop
-#endif
-
 #include <cmath>
 #include <fstream>
 #include <numeric>