msvc: fix linear_solver/

Author: Mizux

ortools/linear_solver/linear_solver.h

@@ -165,9 +165,9 @@
 #include "ortools/port/proto_utils.h"
 #include "ortools/util/lazy_mutable_copy.h"
 
-ABSL_DECLARE_FLAG(bool, linear_solver_enable_verbose_output);
-ABSL_DECLARE_FLAG(bool, log_verification_errors);
-ABSL_DECLARE_FLAG(bool, verify_solution);
+ABSL_DECLARE_DLL_FLAG(OR_DLL, bool, linear_solver_enable_verbose_output);
+ABSL_DECLARE_DLL_FLAG(OR_DLL, bool, log_verification_errors);
+ABSL_DECLARE_DLL_FLAG(OR_DLL, bool, verify_solution);
 
 namespace operations_research {
 

ortools/linear_solver/solve.cc

@@ -120,13 +120,6 @@ ABSL_FLAG(std::string, sol_file, "",
 ABSL_FLAG(std::string, dump_mps, "",
           "If non-empty, dumps the model in mps format there.");
 
-ABSL_DECLARE_FLAG(bool, verify_solution);  // Defined in ./linear_solver.cc
-ABSL_DECLARE_FLAG(bool,
-                  log_verification_errors);  // Defined in ./linear_solver.cc
-ABSL_DECLARE_FLAG(
-    bool,
-    linear_solver_enable_verbose_output);  // Defined in ./linear_solver.cc
-
 static const char kUsageStr[] =
     "Run MPSolver on the given input file. Many formats are supported: \n"
     "  - a .mps or .mps.gz file,\n"