fix: Makefile Windows 检测兼容 Msys2/MINGW 环境

uname -s 在 Msys2 上返回 MINGW64_NT-* 而非 Windows，
添加 findstring 匹配确保静态链接选项生效

engines/src/c/Makefile

@@ -9,6 +9,16 @@ LIB_SRC   = dynamics_lib.c
 # 自动检测系统
 UNAME_S  := $(shell uname -s 2>/dev/null || echo Windows)
 
+# Windows 检测：Msys2/MINGW 也视为 Windows
+IS_WINDOWS := $(findstring MINGW,$(UNAME_S))
+ifneq ($(IS_WINDOWS),)
+  UNAME_S := Windows
+endif
+IS_WINDOWS := $(findstring MSYS,$(UNAME_S))
+ifneq ($(IS_WINDOWS),)
+  UNAME_S := Windows
+endif
+
 # DLL 输出到 engines/release/
 DLL_DIR = ../../release
 
@@ -19,8 +29,9 @@ else ifeq ($(UNAME_S),Darwin)
   DLL_TARGET = $(DLL_DIR)/dynamics_c.dylib
   DLL_FLAGS  = -dynamiclib
 else
+  # Windows: 静态链接运行时，避免依赖 libgcc_s_seh-1.dll
   DLL_TARGET = $(DLL_DIR)/dynamics_c.dll
-  DLL_FLAGS  = -shared
+  DLL_FLAGS  = -shared -static
 endif
 
 .PHONY: all dll clean

engines/src/cpp/Makefile

@@ -6,14 +6,17 @@ LIB_SRC = dynamics_lib.cpp
 
 UNAME_S := $(shell uname -s 2>/dev/null || echo Windows)
 
-CXXFLAGS = -O3 -march=native -std=c++17 -Wall -Wextra -D_USE_MATH_DEFINES
+# Windows 检测：Msys2/MINGW 也视为 Windows
-
+IS_WINDOWS := $(findstring MINGW,$(UNAME_S))
-# Windows 下静态链接运行时
+ifneq ($(IS_WINDOWS),)
-ifeq ($(UNAME_S),Windows)
+  UNAME_S := Windows
-  STATIC_FLAGS = -static-libgcc -static-libstdc++
-else
-  STATIC_FLAGS =
 endif
+IS_WINDOWS := $(findstring MSYS,$(UNAME_S))
+ifneq ($(IS_WINDOWS),)
+  UNAME_S := Windows
+endif
+
+CXXFLAGS = -O3 -march=native -std=c++17 -Wall -Wextra -D_USE_MATH_DEFINES
 
 # DLL 输出到 engines/release/
 DLL_DIR = ../../release
@@ -25,8 +28,9 @@ else ifeq ($(UNAME_S),Darwin)
   DLL_TARGET = $(DLL_DIR)/dynamics_cpp.dylib
   DLL_FLAGS  = -dynamiclib
 else
+  # Windows: 完全静态链接，避免依赖运行时 DLL
   DLL_TARGET = $(DLL_DIR)/dynamics_cpp.dll
-  DLL_FLAGS  = -shared
+  DLL_FLAGS  = -shared -static
 endif
 
 .PHONY: all dll clean
@@ -36,7 +40,7 @@ all: dll
 dll: $(DLL_TARGET)
 
 $(DLL_TARGET): $(LIB_SRC) | $(DLL_DIR)
-	$(CXX) $(CXXFLAGS) $(STATIC_FLAGS) $(DLL_FLAGS) -o $@ $(LIB_SRC)
+	$(CXX) $(CXXFLAGS) $(DLL_FLAGS) -o $@ $(LIB_SRC)
 	@echo "  === C++ DLL built: $@ ==="
 
 $(DLL_DIR):

engines/src/fortran/Makefile

@@ -7,10 +7,14 @@ LIB_SRC = dynamics_lib.f90
 
 UNAME_S := $(shell uname -s 2>/dev/null || echo Windows)
 
-ifeq ($(UNAME_S),Windows)
+# Windows 检测：Msys2/MINGW 也视为 Windows
-  STATIC_FLAGS = -static
+IS_WINDOWS := $(findstring MINGW,$(UNAME_S))
-else
+ifneq ($(IS_WINDOWS),)
-  STATIC_FLAGS =
+  UNAME_S := Windows
+endif
+IS_WINDOWS := $(findstring MSYS,$(UNAME_S))
+ifneq ($(IS_WINDOWS),)
+  UNAME_S := Windows
 endif
 
 # DLL 输出到 engines/release/
@@ -23,8 +27,9 @@ else ifeq ($(UNAME_S),Darwin)
   DLL_TARGET = $(DLL_DIR)/dynamics_f90.dylib
   DLL_FLAGS  = -dynamiclib
 else
+  # Windows: 完全静态链接，避免依赖 libgfortran-5.dll
   DLL_TARGET = $(DLL_DIR)/dynamics_f90.dll
-  DLL_FLAGS  = -shared -fPIC
+  DLL_FLAGS  = -shared -fPIC -static
 endif
 
 .PHONY: all dll clean
@@ -34,7 +39,7 @@ all: dll
 dll: $(DLL_TARGET)
 
 $(DLL_TARGET): $(LIB_SRC) | $(DLL_DIR)
-	$(FC) $(FFLAGS) $(STATIC_FLAGS) $(DLL_FLAGS) -o $@ $(LIB_SRC)
+	$(FC) $(FFLAGS) $(DLL_FLAGS) -o $@ $(LIB_SRC)
 	@echo "  === Fortran DLL built: $@ ==="
 
 $(DLL_DIR):