distributable:
  url: https://github.com/xianyi/OpenBLAS/releases/download/v{{version}}/OpenBLAS-{{version}}.tar.gz
  strip-components: 1

versions:
  github: xianyi/OpenBLAS/releases/tags
  strip: /^v/

build:
  dependencies:
    cmake.org: '*'
  working-directory: build
  script:
    # our llvm doesn't like this flag
    - run: sed -i 's/ -exhaustive-register-search//g' system.cmake
      if: linux/x86-64
      working-directory: ../cmake
    - cmake .. $ARGS
    - make --jobs {{ hw.concurrency }}
    - make install

    ## removing a redundant directory with a duplicate file
    - run: if test -d openblas/openblas; then rm -r openblas/openblas; fi
      working-directory: ${{prefix}}/include
    - run: |
        mv openblas/* .
        rmdir openblas
        ln -s . openblas
      working-directory: ${{prefix}}/include
  env:
    ARGS:
      - -DCMAKE_INSTALL_PREFIX="{{prefix}}"
      - -DCMAKE_BUILD_TYPE=Release
      - -DCMAKE_C_FLAGS="-fPIC"
      - -DCMAKE_CXX_FLAGS="-fPIC"
    x86-64:
      ARGS:
        - -DDYNAMIC_ARCH=ON

test:
  fixture: |
    #include <stdio.h>
    #include <stdlib.h>
    #include <math.h>
    #include "cblas.h"

    int main(void) {
      int i;
      double A[6] = {1.0, 2.0, 1.0, -3.0, 4.0, -1.0};
      double B[6] = {1.0, 2.0, 1.0, -3.0, 4.0, -1.0};
      double C[9] = {.5, .5, .5, .5, .5, .5, .5, .5, .5};
      cblas_dgemm(CblasColMajor, CblasNoTrans, CblasTrans,
                  3, 3, 2, 1, A, 3, B, 3, 2, C, 3);
      for (i = 0; i < 9; i++)
        printf("%lf ", C[i]);
      printf("\\n");
      if (fabs(C[0]-11) > 1.e-5) abort();
      if (fabs(C[4]-21) > 1.e-5) abort();
      return 0;
    }
  script: |
    mv $FIXTURE test.c
    cc test.c -lopenblas -pthread $CFLAGS $LDFLAGS
    ./a.out
  env:
    linux:
      CFLAGS: -fPIC
      LDFLAGS: -pie