Add ALPAQA_WITH_BLAS option

CMakeLists.txt

@@ -71,6 +71,8 @@ option(ALPAQA_DEBUG_CHECKS_EIGEN
     "Initialize Eigen matrices to NaN, and raise an assertion error if memory (re)allocation is used in the inner loops of the algorithms" Off)
 option(ALPAQA_DONT_PARALLELIZE_EIGEN
     "Add the EIGEN_DONT_PARALLELIZE option" On)
+option(ALPAQA_WITH_BLAS
+    "Enable use of BLAS and enable EIGEN_USE_BLAS" Off)
 option(ALPAQA_NO_DLCLOSE
     "Never call dlclose when a shared library is no longer needed, leave it open instead. Useful for profiling using gperftools." Off)
 option(ALPAQA_WITH_ACCURATE_BUILD_TIME

conanfile.py

@@ -39,6 +39,7 @@ class AlpaqaRecipe(ConanFile):
         "debug_checks_eigen": False,
         "dont_parallelize_eigen": True,
         "no_dlclose": False,
+        "with_blas": False,
     }
     options = {
         "shared": [True, False],
@@ -74,6 +75,8 @@ def requirements(self):
             self.requires("pybind11/2.10.1")
         if self.options.with_matlab:
             self.requires("utfcpp/4.0.1")
+        if self.options.with_blas:
+            self.requires("openblas/0.3.24")
 
     def config_options(self):
         if self.settings.get_safe("os") == "Windows":

src/CMakeLists.txt

@@ -95,6 +95,11 @@ endif()
 if (ALPAQA_DONT_PARALLELIZE_EIGEN)
     target_compile_definitions(alpaqa PUBLIC EIGEN_DONT_PARALLELIZE)
 endif()
+if (ALPAQA_WITH_BLAS)
+    find_package(BLAS REQUIRED)
+    target_link_libraries(alpaqa PUBLIC BLAS::BLAS)
+    target_compile_definitions(alpaqa PUBLIC EIGEN_USE_BLAS)
+endif()
 set_target_properties(alpaqa PROPERTIES SOVERSION ${PROJECT_VERSION})
 add_library(alpaqa::alpaqa ALIAS alpaqa)
 list(APPEND ALPAQA_INSTALL_TARGETS alpaqa)

src/cmake/CoreConfig.cmake.in

@@ -22,5 +22,8 @@ if (@ALPAQA_WITH_JSON@)
             INTERFACE nlohmann_json::nlohmann_json)
     endif()
 endif()
+if (@ALPAQA_WITH_BLAS@)
+    find_dependency(BLAS)
+endif()
 
 check_required_components(alpaqaCore)