Make the headers always tell the truth about the ABI of the compiled dll's
to avoid mysterious linker errors when using wrong C++ version in compiler.
This version of the patch is for old systems where the system compiler does not use C++17.
For more information, see “notice for package managers” in options.h

Index: abseil-cpp-20240116.1/absl/base/options.h
===================================================================
--- abseil-cpp-20240116.1.orig/absl/base/options.h
+++ abseil-cpp-20240116.1/absl/base/options.h
@@ -94,7 +94,7 @@
 // User code should not inspect this macro.  To check in the preprocessor if
 // absl::any is a typedef of std::any, use the feature macro ABSL_USES_STD_ANY.
 
-#define ABSL_OPTION_USE_STD_ANY 2
+#define ABSL_OPTION_USE_STD_ANY 0
 
 
 // ABSL_OPTION_USE_STD_OPTIONAL
@@ -121,7 +121,7 @@
 // absl::optional is a typedef of std::optional, use the feature macro
 // ABSL_USES_STD_OPTIONAL.
 
-#define ABSL_OPTION_USE_STD_OPTIONAL 2
+#define ABSL_OPTION_USE_STD_OPTIONAL 0
 
 
 // ABSL_OPTION_USE_STD_STRING_VIEW
@@ -148,7 +148,7 @@
 // absl::string_view is a typedef of std::string_view, use the feature macro
 // ABSL_USES_STD_STRING_VIEW.
 
-#define ABSL_OPTION_USE_STD_STRING_VIEW 2
+#define ABSL_OPTION_USE_STD_STRING_VIEW 0
 
 // ABSL_OPTION_USE_STD_VARIANT
 //
@@ -174,7 +174,7 @@
 // absl::variant is a typedef of std::variant, use the feature macro
 // ABSL_USES_STD_VARIANT.
 
-#define ABSL_OPTION_USE_STD_VARIANT 2
+#define ABSL_OPTION_USE_STD_VARIANT 0
 
 // ABSL_OPTION_USE_STD_ORDERING
 //