add package openblas (#126)

* add package openblas

* raise error if gfortran is not found

packages/o/openblas/xmake.lua

@@ -0,0 +1,74 @@
+package("openblas")
+
+    set_homepage("http://www.openblas.net/")
+    set_description("OpenBLAS is an optimized BLAS library based on GotoBLAS2 1.13 BSD version.")
+
+    if is_plat("windows") then
+        if is_arch("x64", "x86_64") then
+            add_urls("https://github.com/xianyi/OpenBLAS/releases/download/v$(version)/OpenBLAS-$(version)-x64.zip")
+            add_versions("0.3.12", "f1d231594365d5c7f2c625f9d8bd4eeea4f7b748675a95301d3cb2c0aa118e26")
+        end
+    else
+        add_urls("https://github.com/xianyi/OpenBLAS/releases/download/v$(version)/OpenBLAS-$(version).tar.gz")
+        add_versions("0.3.12", "65a7d3a4010a4e3bd5c0baa41a234797cd3a1735449a4a5902129152601dc57b")
+
+        add_configs("with_fortran", {description="Compile with fortran enabled.", default = true, type = "boolean"})
+    end
+
+    if is_plat("linux") then
+        add_syslinks("pthread")
+    end
+
+    on_install("windows", function (package)
+        if package:is_arch("x64", "x86_64") then
+            os.cp("bin", package:installdir())
+            os.cp("include", package:installdir())
+            os.cp("lib", package:installdir())
+            package:addenv("PATH", "bin")
+        end
+    end)
+
+    on_install("linux", "mingw", function (package)
+        local configs = {}
+        if package:config("debug") then table.insert(configs, "DEBUG=1") end
+        if not package:config("shared") then
+            table.insert(configs, "NO_SHARED=1")
+        else
+            table.insert(configs, "NO_STATIC=1")
+        end
+        if package:config("with_fortran") then
+            import("lib.detect.find_tool")
+            local fortran = find_tool("gfortran")
+            if fortran then
+                table.insert(configs, "FC=" .. fortran.program)
+            else
+                raise("gfortran not found!")
+            end
+        else
+            table.insert(configs, "NO_FORTRAN=1")
+        end
+        if package:is_plat("mingw") then
+            if package:is_arch("i386", "x86") then
+                table.insert(configs, "BINARY=32")
+            end
+            os.vrunv("mingw32-make", configs)
+            os.vrunv("mingw32-make install PREFIX=" .. package:installdir(), configs)
+            if package:config("shared") then
+                package:addenv("PATH", "bin")
+            end
+        else
+            os.vrunv("make", configs)
+            os.vrunv("make install PREFIX=" .. package:installdir(), configs)
+        end
+    end)
+
+    on_test(function (package)
+        assert(package:check_csnippets({test = [[
+            void test() {
+                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);
+            }
+        ]]}, {includes = "cblas.h"}))
+    end)