Xcode 链接动态库

我试图在Mac上将动态库链接到我的makefile，但Clang给出了以下信息：

Undefined symbols for architecture x86_64:
"_zbesj_wrap", referenced from:
  sp_bessel::besselJ(double, std::__1::complex<double>) in besselJ.o
"_zbesy_wrap", referenced from:
  sp_bessel::besselJ(double, std::__1::complex<double>) in besselJ.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

c++ -std=c++11 -stdlib=libc++ main.o besselJ.o -o test -L/usr/lib -lcomplex_bessel
ld: library not found for -lcomplex_bessel
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [test] Error 1

---

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好的，我想我用

xcode-select--install

解决了这个问题：其他用户在更新库后也遇到了同样的问题。

您需要将libs传递给链接器，而不是编译器：

OBJS = main.o besselJ.o
CC = c++
CFLAGS = -std=c++11 -stdlib=libc++
LIBS = -L/usr/lib -lcomplex_bessel
PROGRAM_NAME = test

all: $(PROGRAM_NAME)
$(PROGRAM_NAME): $(OBJS)
    $(CC) $(OBJS) -o $@ $(LIBS)
main.o: main.cpp
    $(CC) $(CFLAGS) -c $< -o $@ 
besselJ.o: besselJ.cpp
    $(CC) $(CFLAGS) -c $< -o $@

OBJS=main.o besselJ.o
cc= C++
CFLAGS=-std=c++11-stdlib=libc++
LIBS=-L/usr/lib-lcomplex\u bessel
程序名称=测试
全部：$（程序名称）
$（程序名称）：$（OBJS）
$（CC）$（OBJS）-o$@$（LIBS）
main.o:main.cpp
$（CC）$（CFLAGS）-c$<-o$@
besselJ.o:besselJ.cpp
$（CC）$（CFLAGS）-c$<-o$@

好的，谢谢，我这样做了，但我收到以下消息：ld:library not found for-lcomplex\u bessel clang:error:linker命令失败，退出代码为1（使用-v查看调用）

c++ -std=c++11 -stdlib=libc++ main.o besselJ.o -o test -L/usr/lib -lcomplex_bessel
ld: library not found for -lcomplex_bessel
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [test] Error 1

OBJS = main.o besselJ.o
CC = c++
CFLAGS = -std=c++11 -stdlib=libc++
LIBS = -L/usr/lib -lcomplex_bessel
PROGRAM_NAME = test

all: $(PROGRAM_NAME)
$(PROGRAM_NAME): $(OBJS)
    $(CC) $(OBJS) -o $@ $(LIBS)
main.o: main.cpp
    $(CC) $(CFLAGS) -c $< -o $@ 
besselJ.o: besselJ.cpp
    $(CC) $(CFLAGS) -c $< -o $@