From: Theodore Tsirpanis <theodore.tsirpanis@tiledb.com>
Date: Tue, 19 Dec 2023 13:06:03 +0000 (+0200)
Subject: Make `zstd::libzstd` an imported interface target.
X-Git-Tag: v1.5.6^2~58^2~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=475da4fb2e2aef102edecba04278b38fce44fb81;p=thirdparty%2Fzstd.git

Make `zstd::libzstd` an imported interface target.
It cannot be an alias, because it would lock the package to use either static or shared libraries at its build time. We want to decide this at the time `find_package` is called.
---

diff --git a/build/cmake/zstdConfig.cmake.in b/build/cmake/zstdConfig.cmake.in
index 752f3ab11..0a7f773d7 100644
--- a/build/cmake/zstdConfig.cmake.in
+++ b/build/cmake/zstdConfig.cmake.in
@@ -7,10 +7,18 @@ endif()
 
 include("${CMAKE_CURRENT_LIST_DIR}/zstdTargets.cmake")
 
-if(@ZSTD_BUILD_SHARED@ AND NOT @ZSTD_BUILD_STATIC@)
-  add_library(zstd::libzstd ALIAS zstd::libzstd_shared)
-elseif(NOT @ZSTD_BUILD_SHARED@ AND @ZSTD_BUILD_STATIC@)
-  add_library(zstd::libzstd ALIAS zstd::libzstd_static)
+if(NOT TARGET zstd::libzstd)
+  if(@ZSTD_BUILD_SHARED@ AND NOT @ZSTD_BUILD_STATIC@)
+    add_library(zstd::libzstd INTERFACE IMPORTED)
+    set_target_properties(zstd::libzstd PROPERTIES
+      INTERFACE_LINK_LIBRARIES "zstd::libzstd_shared"
+    )
+  elseif(NOT @ZSTD_BUILD_SHARED@ AND @ZSTD_BUILD_STATIC@)
+    add_library(zstd::libzstd INTERFACE IMPORTED)
+    set_target_properties(zstd::libzstd PROPERTIES
+      INTERFACE_LINK_LIBRARIES "zstd::libzstd_static"
+    )
+  endif()
 endif()
 
 check_required_components("zstd")