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From: Benjamin Barenblat <bbaren@google.com>
Subject: Set package configuration options
Forwarded: not-needed

Configure Abseil for Debian.

  - Set the SONAME appropriately.

  - To minimize the possibility of future ABI breakage, treat absl::any,
    absl::optional, absl::string_view, and absl::variant as their own types
    (rather than aliases for the std:: versions), and compile everything in an
    inline namespace.

  - Enable upstream's hardened build mode.

--- a/CMake/AbseilHelpers.cmake
+++ b/CMake/AbseilHelpers.cmake
@@ -298,7 +298,8 @@
     if(ABSL_ENABLE_INSTALL)
       set_target_properties(${_NAME} PROPERTIES
         OUTPUT_NAME "absl_${_NAME}"
-        SOVERSION "2308.0.0"
+        SOVERSION 20230802
+        VERSION "20230802.0.0"
       )
     endif()
   else()
--- a/absl/base/options.h
+++ b/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_INLINE_NAMESPACE
@@ -200,7 +200,7 @@
 // allowed.
 
 #define ABSL_OPTION_USE_INLINE_NAMESPACE 1
-#define ABSL_OPTION_INLINE_NAMESPACE_NAME lts_20230802
+#define ABSL_OPTION_INLINE_NAMESPACE_NAME debian5
 
 // ABSL_OPTION_HARDENED
 //
@@ -227,6 +227,6 @@
 // checks enabled by this option may abort the program in a different way and
 // log additional information when `NDEBUG` is not defined.
 
-#define ABSL_OPTION_HARDENED 0
+#define ABSL_OPTION_HARDENED 1
 
 #endif  // ABSL_BASE_OPTIONS_H_