remove required from metis first case

Author: galabovaa

HiGHS.sln

@@ -0,0 +1,24 @@
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.5.2.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Highs", "nuget\Highs.csproj", "{906CCF22-9F98-849C-F4C4-760DF67E239A}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{906CCF22-9F98-849C-F4C4-760DF67E239A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{906CCF22-9F98-849C-F4C4-760DF67E239A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{906CCF22-9F98-849C-F4C4-760DF67E239A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{906CCF22-9F98-849C-F4C4-760DF67E239A}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {EC0BE5C3-4D74-4063-8A97-A20816026C5C}
+	EndGlobalSection
+EndGlobal

cmake/FindHipoDeps.cmake

@@ -153,15 +153,13 @@ if(metis_FOUND)
 else()
     find_path(METIS_PATH
         NAMES "metis.h"
-        REQUIRED
         PATHS "${METIS_ROOT}/include"
         NO_DEFAULT_PATH)
 
     message(STATUS "Found Metis header at ${METIS_PATH}")
 
     find_library(METIS_LIB
         NAMES metis libmetis
-        REQUIRED
         PATHS "${METIS_ROOT}/lib" "${METIS_ROOT}/bin"
         NO_DEFAULT_PATH)
 
@@ -178,14 +176,12 @@ else()
             else()
                 # METIS_ROOT was not successful and there is no cmake config
                 find_path(METIS_PATH
-                    NAMES "metis.h"
-                    REQUIRED)
+                    NAMES "metis.h")
 
                 message(STATUS "Found Metis header at ${METIS_PATH}")
 
                 find_library(METIS_LIB
-                    NAMES metis libmetis
-                    REQUIRED)
+                    NAMES metis libmetis)
 
                 if(METIS_LIB)
                     message(STATUS "Found Metis library at ${METIS_LIB}")