C 编译MEX文件时链接出现问题

我试图编译一个我编写的mex文件，以便在MATLAB中运行一个预先存在的C程序。我收到以下错误：

>> mex src/main.c -Iinclude -I/Users/my_name/mpfr-3.1.1/src/ -I/Users/my_name/gmp-5.0.5 -Lsrc0 -output cpdetect_c
Undefined symbols for architecture x86_64:
  "_binomial_main", referenced from:
      _cpdetect in main.o
  "_gaussian1_main", referenced from:
      _cpdetect in main.o
  "_gaussianU_main", referenced from:
      _cpdetect in main.o
  "_mpfr_clears", referenced from:
      _cpdetect in main.o
  "_mpfr_exp10", referenced from:
      _cpdetect in main.o
  "_mpfr_inits2", referenced from:
      _cpdetect in main.o
  "_mpfr_set_d", referenced from:
      _cpdetect in main.o
  "_poisson_main", referenced from:
      _cpdetect in main.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status

Undefined symbols for architecture x86_64:
  "_mpfr_mul_d", referenced from:
      _gaussian1_calc_constant_part in gaussian1.o
      _gaussianU_calc_constant_part in gaussianU.o
  "_mpfr_printf", referenced from:
      _find_gaussian1_change_point in gaussian1.o
      _gaussian1_point_calc in gaussian1.o
      _gaussianU_calc_constant_part in gaussianU.o
      _find_gaussianU_change_point in gaussianU.o
      _find_poisson_change_point in poisson.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status

    mex: link of ' "cpdetect_c.mexmaci64"' failed.

我很困惑，因为这些函数都是我在代码中包含的文件的一部分。如何让编译器找到它们

我正在MacOSX10.8上运行MatlabR2013A，Xcode版本为4.6.3

谢谢你的建议

更新1：

@Shai:我的src0文件夹的内容：

>> ls src0
Makefile            gaussian1.o         test_gaussian1.c        test_tools.c
Makefile.am         loadtraj.c          test_gaussian1_point_calc.c test_tools.o
Makefile.in         loadtraj.o          test_load           tools.c
binomial.c          main.c              test_load.c         tools.o
binomial.o          main.o              test_load.o
cpdetect            poisson.c           test_poisson.c
gaussian1.c         poisson.o           test_tools

这个原本打算在命令行上运行的C程序来自一个朋友，并且已经有了src0文件夹。在编写mex函数时，我修改了“src”文件夹中的代码文件，但没有触及src0文件夹

更新2： 我意识到我指向mpfr的错误位置。我现在使用以下编译命令：

>> mex src/main.c src/binomial.c src/gaussian1.c src/gaussianU.c src/poisson.c -Iinclude -I/usr/local/include -lmpfr -output cpdetect_c

它给出了以下错误：

>> mex src/main.c -Iinclude -I/Users/my_name/mpfr-3.1.1/src/ -I/Users/my_name/gmp-5.0.5 -Lsrc0 -output cpdetect_c
Undefined symbols for architecture x86_64:
  "_binomial_main", referenced from:
      _cpdetect in main.o
  "_gaussian1_main", referenced from:
      _cpdetect in main.o
  "_gaussianU_main", referenced from:
      _cpdetect in main.o
  "_mpfr_clears", referenced from:
      _cpdetect in main.o
  "_mpfr_exp10", referenced from:
      _cpdetect in main.o
  "_mpfr_inits2", referenced from:
      _cpdetect in main.o
  "_mpfr_set_d", referenced from:
      _cpdetect in main.o
  "_poisson_main", referenced from:
      _cpdetect in main.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status

Undefined symbols for architecture x86_64:
  "_mpfr_mul_d", referenced from:
      _gaussian1_calc_constant_part in gaussian1.o
      _gaussianU_calc_constant_part in gaussianU.o
  "_mpfr_printf", referenced from:
      _find_gaussian1_change_point in gaussian1.o
      _gaussian1_point_calc in gaussian1.o
      _gaussianU_calc_constant_part in gaussianU.o
      _find_gaussianU_change_point in gaussianU.o
      _find_poisson_change_point in poisson.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status

    mex: link of ' "cpdetect_c.mexmaci64"' failed.

---

这很奇怪。这并不是说编译器找不到任何mpfr函数——它似乎可以毫不费力地找到许多其他函数，如果我故意省略-lmpfr标志，我会得到更长的未定义符号列表。我确认mpfr_mul_d和mpfr_printf是我安装的mpfr发行版的一部分。有什么想法吗？谢谢。

答案由Amro提供-在本例中，必须使用-L/usr/local/lib标志指向库的位置，并告诉编译器使用-lmpfr标志链接到库。还感谢Shai提供的故障排除帮助。

哪些库编译了“src0”文件夹中的文件？您包含的函数是否编译到共享库中？他们的源代码在哪里？您编译过它们的源代码吗？包含函数的源代码位于子文件夹include中，我在命令行中用“-Iinclude”指向该子文件夹。我需要分别编译它们吗？我认为mex会自动编译任何包含的源代码以及main函数_c@Shai：谢谢，这很有帮助-现在它找到了我所有的源文件，它只是在mpfr功能方面有问题。我如何链接到这些？我尝试将-L/Users/my_name/mpfr-3.1.1/src/添加到上面的命令中，但没有任何帮助。