GCC中常用的几个选项

Makefile有几个约定俗成的规范

1. From Source Code to Object file:

$(CC) $(CPPFLAGS) $(CFLAGS) -c HelloWorld.c -o HelloWorld.o( -c: prevent linking)

2. From Object File to Executable File

$(CC) $(LDFLAGS) HelloWorld.o -o HelloWorld

3. From Source Code to Executable File

$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) HelloWorld.c -o HelloWorld

其中 CPPFLAGS表示编译器预编译选项， CFLAGS表示C编译选项， LDFLAGS表示link选项

For example:

CFLAGS="-O2 -g", optimization level = 2, including debug symbol.

CPPFLAGS = "_DUNICODE"

LDFLAGS=-s, 删除可执行程序中的符号表和重定位信息