edisongustavo commented on a change in pull request #14028: [WIP] Cmake blas
URL: https://github.com/apache/incubator-mxnet/pull/14028#discussion_r254195311
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File path: cmake/Modules/FindOpenBLAS.cmake
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@@ -14,78 +14,168 @@
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
+#
+# Finds the OpenBLAS library.
+#
+# The following variables are set after configuration is done:
+#
+# - OpenBLAS_FOUND
+# - OpenBLAS_INCLUDE_DIRS
+# - OpenBLAS_LIBRARIES
+#
+# This script will try to find the OpenBLAS library using the following
mechanisms in this order:
+#
+# 1 - Use find_package(OpenBLAS) in Config mode. This is the recommended way
to find dependencies
+# with cmake.
+# 2 - Use pkg-config
+# 3 - Find the files manually
+#
+# At each step that was just described, in order to guarantee that the library
was found correctly,
+# this script tries to compile this simple program:
+#
+# #include <cblas.h>
+# void main() { cblas_sasum(0, (float*)0, 0); }
+#
+# If this simple program can't be compiled with the found include directories
provided by the step,
+# then it assumes the step failed and moves on to the next step.
+#
+# To control the behavior of each step, these settings can be set for each
step:
+# - For step 1:
Review comment:
Yes, that slipped. Oooops
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