6 ms·

Compiling GCC 5 on OS X

53 points by AlexeyBrin 12y ago

marvel_boy 12y ago
From the article: >Clang, the default compiler for OS X, supports only C, C++ and >Objective-C. If you are interested in a modern Fortran >compiler,... Mmm, no we are not interested
- coherentpony 12y ago
  BLAS and LAPACK?
  - microtherion 12y ago
    C versions of those ship pre-built on OS X.
    - tobinfricke 12y ago
      Are you sure that's not just a C interface to the Fortran library? http://www.netlib.org/lapack/ http://www.netlib.org/lapack/ : "LAPACK is written in Fortran 90 and provides routines for solving systems of simultaneous linear equations, least-squares solutions of linear systems of equations, eigenvalue problems, and singular value problems." http://www.netlib.org/lapack/lapacke.html http://www.netlib.org/lapack/lapacke.html : "The LAPACKE C Interface to LAPACK"
      - microtherion 12y ago
        You might be right, at least for parts of LAPACK. I think Apple's libraries are based on ATLAS, where the BLAS part and some of LAPACK is written in C.
      - coliveira 12y ago
        There is a reason why these things are still written in FORTRAN: they run much faster than C-based versions. Some people say that C++ with templates can get closer to FORTRAN, but even if that is true, creating libraries for non-C++ languages from C++ template-based code is very complicated.
- saboot 12y ago
  Like it or not, there still exist many important and frequently used programs which are only written in fortran. People absolutely should be interested in maintaining a fortran compiler.
  - wtallis 12y ago
    Yeah, there's little reason to write new code in Fortran, but there's definitely a need for current binaries of all those existing mature and well-designed Fortran libraries.
    - csl 12y ago
      I work with reservoir modelling, and it continues to amaze me that everyone coming from non-CS fields seem to have programmed solely in Fortran. Besides, I believe the Intel Fortran compiler is extremely fast. I wouldn't say there's no reason to write new programs in Fortran.
      - aeroevan 12y ago
        I find it's much easier to write code that uses multidimensional arrays in Fortan than almost any other language. Sure, i/o isn't as nice and don't try to do anything fancy with strings, but for numbers it's hard to beat.
ifdefdebug 12y ago
Would have been interesting to see if it can compile itself.
- stefantalpalaru 12y ago
  It does, during the build process. Twice.
stefantalpalaru 12y ago
Compiling GCC 5 on Gentoo Linux: echo "sys-devel/gcc:5.1 **" >> /etc/portage/package.keywords emerge -n gcc:4.9 emerge -1 gcc
comex 12y ago
Just as a PSA: GCC 5.1.0 is available in Homebrew as the gcc5 package.
- cornstalks 12y ago
  Do you (or anyone) know why the gcc package isn't GCC 5.1 yet?I'm not sure why Homebrew hasn't updated the gcc package itself, and instead requires you to use the versions/gcc5 one.
  - D4AHNGM 12y ago
    Certain things are still being tested/rebuilt to work with the latest GCC. https://github.com/Homebrew/homebrew/pull/36926 https://github.com/Homebrew/homebrew/pull/36926
jedisct1 12y ago
$ brew install gcc5 Done.
hackeyed90 12y ago
If you're going to put gmp etc in the same spot as gcc just let gcc download and configure the prereqs: tar xf gcc... cd gcc... contrib/download_prerequisites ./configure ... make make install

53 points by AlexeyBrin 12y ago

From the article: >Clang, the default compiler for OS X, supports only C, C++ and >Objective-C. If you are interested in a modern Fortran >compiler,... Mmm, no we are not interested

coherentpony 12y ago
BLAS and LAPACK?
- microtherion 12y ago
  C versions of those ship pre-built on OS X.
  - tobinfricke 12y ago
    Are you sure that's not just a C interface to the Fortran library? http://www.netlib.org/lapack/ http://www.netlib.org/lapack/ : "LAPACK is written in Fortran 90 and provides routines for solving systems of simultaneous linear equations, least-squares solutions of linear systems of equations, eigenvalue problems, and singular value problems." http://www.netlib.org/lapack/lapacke.html http://www.netlib.org/lapack/lapacke.html : "The LAPACKE C Interface to LAPACK"
    - microtherion 12y ago
      You might be right, at least for parts of LAPACK. I think Apple's libraries are based on ATLAS, where the BLAS part and some of LAPACK is written in C.
    - coliveira 12y ago
      There is a reason why these things are still written in FORTRAN: they run much faster than C-based versions. Some people say that C++ with templates can get closer to FORTRAN, but even if that is true, creating libraries for non-C++ languages from C++ template-based code is very complicated.
saboot 12y ago
Like it or not, there still exist many important and frequently used programs which are only written in fortran. People absolutely should be interested in maintaining a fortran compiler.
- wtallis 12y ago
  Yeah, there's little reason to write new code in Fortran, but there's definitely a need for current binaries of all those existing mature and well-designed Fortran libraries.
  - csl 12y ago
    I work with reservoir modelling, and it continues to amaze me that everyone coming from non-CS fields seem to have programmed solely in Fortran. Besides, I believe the Intel Fortran compiler is extremely fast. I wouldn't say there's no reason to write new programs in Fortran.
    - aeroevan 12y ago
      I find it's much easier to write code that uses multidimensional arrays in Fortan than almost any other language. Sure, i/o isn't as nice and don't try to do anything fancy with strings, but for numbers it's hard to beat.

ifdefdebug 12y ago

Would have been interesting to see if it can compile itself.

stefantalpalaru 12y ago
It does, during the build process. Twice.

stefantalpalaru 12y ago

Compiling GCC 5 on Gentoo Linux: echo "sys-devel/gcc:5.1 **" >> /etc/portage/package.keywords emerge -n gcc:4.9 emerge -1 gcc

comex 12y ago

Just as a PSA: GCC 5.1.0 is available in Homebrew as the gcc5 package.

cornstalks 12y ago
Do you (or anyone) know why the gcc package isn't GCC 5.1 yet?I'm not sure why Homebrew hasn't updated the gcc package itself, and instead requires you to use the versions/gcc5 one.
- D4AHNGM 12y ago
  Certain things are still being tested/rebuilt to work with the latest GCC. https://github.com/Homebrew/homebrew/pull/36926 https://github.com/Homebrew/homebrew/pull/36926

jedisct1 12y ago

$ brew install gcc5 Done.

hackeyed90 12y ago

If you're going to put gmp etc in the same spot as gcc just let gcc download and configure the prereqs: tar xf gcc... cd gcc... contrib/download_prerequisites ./configure ... make make install