patch libzippp.cpp to remove unneeded import to fix pip build

Author: jcschaff

CMakeLists.txt

@@ -216,7 +216,29 @@ add_subdirectory(VCellMessaging)
 
 add_subdirectory(VCellZipUtils)
 
+
+
+
 add_subdirectory(libzippp)
+# Path to the patch file
+set(PATCH_FILE "${CMAKE_SOURCE_DIR}/patches/libzippp_patch.diff")
+# Path to the file to be patched
+set(FILE_TO_PATCH "${CMAKE_SOURCE_DIR}/libzippp/src/libzippp.cpp")
+# Apply the patch
+add_custom_command(
+		OUTPUT ${FILE_TO_PATCH}
+		COMMAND ${CMAKE_COMMAND} -E echo "Applying patch to libzippp"
+		COMMAND ${CMAKE_COMMAND} -E copy_if_different ${FILE_TO_PATCH} ${FILE_TO_PATCH}.bak
+		COMMAND ${CMAKE_COMMAND} -E touch ${FILE_TO_PATCH}
+		COMMAND patch ${FILE_TO_PATCH} < ${PATCH_FILE}
+		DEPENDS ${PATCH_FILE}
+		COMMENT "Patching libzippp"
+)
+# Ensure the patch is applied before building the submodule
+add_custom_target(apply_patch ALL DEPENDS ${FILE_TO_PATCH})
+add_dependencies(libzippp apply_patch)
+
+
 
 add_subdirectory(ExpressionParser)
 

patches/libzippp_patch.diff

@@ -0,0 +1,14 @@
+diff --git a/src/libzippp.cpp b/src/libzippp.cpp
+index 37d9cd1..19e8fc2 100644
+--- a/src/libzippp.cpp
++++ b/src/libzippp.cpp
+@@ -38,9 +38,7 @@
+ #endif
+ 
+ #include <zip.h>
+-#include <errno.h>
+ #include <fstream>
+-#include <memory>
+ 
+ #include "libzippp.h"
+