在Mac OS X上提升makefile

Question

我想使用boost regex庫並創建一個非常短的程序來測試我的makefile

#include <iostream>
#include <boost/regex.hpp>

using namespace std;
using namespace boost;

int main() {

    regex exp("test");

    cout << "Hello World" << endl;
}

這是我的makefile（我從這個線程中獲得了包括make文件中的boost庫 ）

EXEC = main
SOURCES = $(wildcard *.cpp)
HEADERS = $(wildcard *.h*)
OBJECTS = $(SOURCES:.cpp=.o)

all: $(EXEC)

main: $(OBJECTS)
    g++ -L/usr/local/Cellar/boost/1.54.0/lib -lboost_filesystem-mt -lboost_thread-mt $(OBJECTS) -o $(EXEC)

%.o: %.cpp $(HEADERS)
    g++ -I/usr/local/Cellar/boost/1.54.0/include -c $< -o $@

clean:
    rm -f $(EXEC) $(OBJECTS)

當我編譯我的程序時，獲取以下錯誤消息：

g++ -I/usr/local/Cellar/boost/1.54.0/include -c main.cpp -o main.o
g++ -L/usr/local/Cellar/boost/1.54.0/lib -lboost_filesystem-mt -lboost_thread-mt main.o -o main
Undefined symbols for architecture x86_64:
  "boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::do_assign(char const*, char const*, unsigned int)", referenced from:
      boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::assign(char const*, char const*, unsigned int)in main.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status
make: *** [main] Error 1

什么東西少了？ 我在Mac OS X 10.8下用自制軟件安裝了boost。

Answer 1

您缺少指向boost_regex_mt庫的鏈接

-lboost_filesystem-mt -lboost_thread-mt

在你的makefile中......

main: $(OBJECTS)
    g++ -L/usr/local/Cellar/boost/1.54.0/lib -lboost_regex-mt -lboost_filesystem-mt -lboost_thread-mt     $(OBJECTS) -o $(EXEC)