[CMAKE] Add looking for libm on UNIX systems + update cmake-format co…

…nfiguration file

.cmake-format.yaml

@@ -96,6 +96,15 @@ parse:
     mq_add_compile_definitions:
       pargs:
         nargs: +
+        flags:
+          - TRYCOMPILE
+          - TRYCOMPILE_FLAGCHECK
+    mq_link_libraries:
+      pargs:
+        nargs: +
+        flags:
+          - TRYCOMPILE
+          - TRYCOMPILE_FLAGCHECK
     mindquantum_add_pkg:
       pargs:
         nargs: 1

cmake/commands/mq_link_libraries.cmake

@@ -0,0 +1,46 @@
+# ==============================================================================
+#
+# Copyright 2022 <Huawei Technologies Co., Ltd>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# ==============================================================================
+
+# lint_cmake: -whitespace/indent
+
+# ~~~
+# Add one or more link libraries to some of the language specific targets (see setup_languages())
+#
+# mq_link_libraries([NO_MQ_TARGET, NO_TRYCOMPILE_TARGET, NO_TRYCOMPILE_FLAGCHECK_TARGET]
+#                    <library>, [<library>, ...])
+#
+# Always modify the <LANG>_mindquantum target. If any of TRYCOMPILE, TRYCOMPILE_FLAGCHECK is also specified, then modify
+# the corresponding target.
+# ~~~
+function(mq_link_libraries)
+  cmake_parse_arguments(PARSE_ARGV 0 MLL "TRYCOMPILE;TRYCOMPILE_FLAGCHECK" "" "")
+
+  foreach(lang C CXX CUDA NVCXX DPCXX)
+    is_language_enabled(${lang} _enabled)
+    if(_enabled)
+      target_link_libraries(${lang}_mindquantum INTERFACE "$<$<LINK_LANGUAGE:${lang}>:${MLL_UNPARSED_ARGUMENTS}>")
+      if(MLL_TRYCOMPILE)
+        target_link_libraries(${lang}_try_compile INTERFACE "$<$<LINK_LANGUAGE:${lang}>:${MLL_UNPARSED_ARGUMENTS}>")
+      endif()
+      if(MLL_TRYCOMPILE_FLAGCHECK)
+        target_link_libraries(${lang}_try_compile_flagcheck
+                              INTERFACE "$<$<LINK_LANGUAGE:${lang}>:${MLL_UNPARSED_ARGUMENTS}>")
+      endif()
+    endif()
+  endforeach()
+endfunction()

cmake/packages.cmake

@@ -19,7 +19,30 @@
 # lint_cmake: -whitespace/indent
 
 include(debug_print)
+include(mq_link_libraries)
 
+# ==============================================================================
+# Math lib
+
+if(UNIX)
+  include(CheckLibraryExists)
+  check_library_exists(m sin "" HAVE_LIB_M)
+
+  if(HAVE_LIB_M)
+    if(NOT TARGET libm)
+      add_library(libm INTERFACE)
+    endif()
+    target_link_libraries(libm INTERFACE m)
+    if(NOT TARGET mindquantum::math)
+      add_library(mindquantum::math ALIAS libm)
+    endif()
+    mq_link_libraries(mindquantum::math)
+  else()
+    message(FATAL_ERROR "Math library (m) required on UNIX systems")
+  endif()
+endif()
+
+# ==============================================================================
 # OpenMP
 
 set(PARALLEL_LIBS)