Squashed 'third_party/abseil/' content from commit ddf8e52a2
Change-Id: I330cdc687395c6605ad027b855e313ff4a2059e9
git-subtree-dir: third_party/abseil
git-subtree-split: ddf8e52a2918dd0ccec75d3e2426125fa3926724
diff --git a/CMake/AbseilInstallDirs.cmake b/CMake/AbseilInstallDirs.cmake
new file mode 100644
index 0000000..b67272f
--- /dev/null
+++ b/CMake/AbseilInstallDirs.cmake
@@ -0,0 +1,20 @@
+include(GNUInstallDirs)
+
+# absl_VERSION is only set if we are an LTS release being installed, in which
+# case it may be into a system directory and so we need to make subdirectories
+# for each installed version of Abseil. This mechanism is implemented in
+# Abseil's internal Copybara (https://github.com/google/copybara) workflows and
+# isn't visible in the CMake buildsystem itself.
+
+if(absl_VERSION)
+ set(ABSL_SUBDIR "${PROJECT_NAME}_${PROJECT_VERSION}")
+ set(ABSL_INSTALL_BINDIR "${CMAKE_INSTALL_BINDIR}/${ABSL_SUBDIR}")
+ set(ABSL_INSTALL_CONFIGDIR "${CMAKE_INSTALL_LIBDIR}/cmake/${ABSL_SUBDIR}")
+ set(ABSL_INSTALL_INCLUDEDIR "${CMAKE_INSTALL_INCLUDEDIR}/{ABSL_SUBDIR}")
+ set(ABSL_INSTALL_LIBDIR "${CMAKE_INSTALL_LIBDIR}/${ABSL_SUBDIR}")
+else()
+ set(ABSL_INSTALL_BINDIR "${CMAKE_INSTALL_BINDIR}")
+ set(ABSL_INSTALL_CONFIGDIR "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}")
+ set(ABSL_INSTALL_INCLUDEDIR "${CMAKE_INSTALL_INCLUDEDIR}")
+ set(ABSL_INSTALL_LIBDIR "${CMAKE_INSTALL_LIBDIR}")
+endif()
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