+openblas (#1464)

* +openblas

* fix build

* add -pthread; cleanup

* fix cpu target for darwin/x86-64

* exclude darwin/x86-64 for now

---------

Co-authored-by: Jacob Heider <jacob@tea.xyz>

projects/openblas.net/package.yml

@@ -0,0 +1,66 @@
+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/
+
+platforms:
+  - linux
+  - darwin/aarch64
+  # FIXME: illegal instruction on darwin/x86-64
+
+build:
+  dependencies:
+    tea.xyz/gx/cc: c99
+    tea.xyz/gx/make: '*'
+    cmake.org: '*'
+  working-directory: build
+  script:
+    - cmake .. -DCMAKE_INSTALL_PREFIX="{{prefix}}" -DCMAKE_BUILD_TYPE=Release
+    - make --jobs {{ hw.concurrency }} $ARGS
+    - make install
+
+    ## removing a redundant directory with a duplicate file
+    - run: rm -r openblas/openblas
+      working-directory: ${{prefix}}/include
+    - run: |
+        mv openblas/* .
+        rmdir openblas
+        ln -s . openblas
+      working-directory: ${{prefix}}/include
+  # FIXME: illegal instruction on darwin/x86-64
+  # line 25:  2290 Illegal instruction: 4  ./a.out
+  # env:
+  #   darwin/x86-64:
+  #     ARGS:
+  #       - TARGET=CORE2
+
+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;
+    }
+  dependencies:
+    tea.xyz/gx/cc: c99
+  script: |
+    mv $FIXTURE test.c
+    cc test.c -lopenblas -pthread $CFLAGS $LDFLAGS
+    ./a.out