gnucash-docs stable: Replace list(POP_FRONT) with older iteration technique

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash-docs/commit/98d9d72d (commit)
	from  https://github.com/Gnucash/gnucash-docs/commit/ad6718b5 (commit)



commit 98d9d72d9e9762b11a0d91837dabb160e5c90f23
Author: John Ralls <jralls at ceridwen.us>
Date:   Mon Sep 11 11:37:49 2023 -0700

    Replace list(POP_FRONT) with older iteration technique
    
    To allow building with CMake < 3.15.

diff --git a/cmake/AddGncDocTargets.cmake b/cmake/AddGncDocTargets.cmake
index cbfdcb64..2abd3d23 100644
--- a/cmake/AddGncDocTargets.cmake
+++ b/cmake/AddGncDocTargets.cmake
@@ -28,9 +28,13 @@ function (add_gnc_doc_targets lang entities figures xslt_files)
     set(xslt_epub "${BASE_XSLT_EPUB}")
     set(xslt_chm "${BASE_XSLT_CHM}")
     set(xslt_filename_list "")
-    while(NOT "${xslt_files}" STREQUAL "")
-        list(POP_FRONT xslt_files xslt_docfmt xslt_filename)
-        list(APPEND xslt_filename_list ${xslt_filename})
+    list(LENGTH xslt_files entries)
+    while(entries)
+      list(GET xslt_files 0 xslt_docfmt)
+      list(GET xslt_files 1 xslt_filename)
+      list(REMOVE_AT xslt_files 0 1)
+      list(LENGTH xslt_files entries)
+      list(APPEND xslt_filename_list ${xslt_filename})
         if(xslt_docfmt STREQUAL "html")
             set(xslt_html ${xslt_filename})
         endif()



Summary of changes:
 cmake/AddGncDocTargets.cmake | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)