[lerc] Export Package (#13724)

Co-authored-by: Nathan Mercer <nmercer@intermap.com>
Co-authored-by: wangli28 <wangli28@beyondsoft.com>

ports/lerc/CONTROL

@@ -1,4 +1,5 @@
 Source: lerc
 Version: 2.2
+Port-Version: 1
 Homepage: https://github.com/Esri/lerc
 Description: An open-source image or raster format which supports rapid encoding and decoding for any pixel type

ports/lerc/create_package.patch

@@ -0,0 +1,26 @@
+ CMakeLists.txt | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index e90fcdd..17c79e8 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -17,7 +17,7 @@ add_library(LercLib ${SOURCES})
+ target_link_libraries (LercLib)
+ 
+ install(
+-    TARGETS LercLib
++    TARGETS LercLib EXPORT LercTargets
+     LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+     ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+@@ -28,3 +28,9 @@ install(
+     FILES "include/Lerc_types.h" "include/Lerc_c_api.h"
+     DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+ )
++
++install(EXPORT LercTargets
++  FILE lercConfig.cmake
++  NAMESPACE Esri::
++  DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/lerc"
++)

ports/lerc/portfile.cmake

@@ -7,6 +7,7 @@ vcpkg_from_github(
     PATCHES
         "install_lib_to_archive_path.patch"
         "enable_static_build.patch"
+        "create_package.patch"
 )
 
 vcpkg_configure_cmake(
@@ -15,6 +16,7 @@ vcpkg_configure_cmake(
 )
 
 vcpkg_install_cmake()
+vcpkg_fixup_cmake_targets()
 
 file(REMOVE_RECURSE "${CURRENT_PACKAGES_DIR}/debug/include")