diff --git a/.gitignore b/.gitignore
index 8e1e949f5..943d5103b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -176,58 +176,3 @@ node_modules
 ##############
 *.core
 
-# Build-time symlinks to bundled libraries #
-############################################
-Foundation/src/adler32.c
-Foundation/src/config.h
-Foundation/src/pcre2posix.c
-Foundation/src/pcre2posix.h
-Foundation/src/compress.c
-Foundation/src/crc32.c
-Foundation/src/crc32.h
-Foundation/src/deflate.c
-Foundation/src/deflate.h
-Foundation/src/gzguts.h
-Foundation/src/infback.c
-Foundation/src/inffast.c
-Foundation/src/inffast.h
-Foundation/src/inffixed.h
-Foundation/src/inflate.c
-Foundation/src/inflate.h
-Foundation/src/inftrees.c
-Foundation/src/inftrees.h
-Foundation/src/pcre2.h
-Foundation/src/pcre2_*.c
-Foundation/src/pcre2_*.h
-Foundation/src/trees.c
-Foundation/src/trees.h
-Foundation/src/utf8proc.c
-Foundation/src/utf8proc.h
-Foundation/src/utf8proc_data.c
-Foundation/src/zconf.h
-Foundation/src/zlib.h
-Foundation/src/zutil.c
-Foundation/src/zutil.h
-JSON/src/pdjson.c
-JSON/src/pdjson.h
-Data/SQLite/src/sqlite3.c
-Data/SQLite/src/sqlite3.h
-XML/src/ascii.h
-XML/src/asciitab.h
-XML/src/expat.h
-XML/src/expat_config.h
-XML/src/expat_external.h
-XML/src/iasciitab.h
-XML/src/internal.h
-XML/src/latin1tab.h
-XML/src/nametab.h
-XML/src/siphash.h
-XML/src/utf8tab.h
-XML/src/xmlparse.cpp
-XML/src/xmlrole.c
-XML/src/xmlrole.h
-XML/src/xmltok.c
-XML/src/xmltok.h
-XML/src/xmltok_impl.c
-XML/src/xmltok_impl.h
-XML/src/xmltok_ns.c
diff --git a/Data/SQLite/.gitignore b/Data/SQLite/.gitignore
new file mode 100644
index 000000000..26e71d088
--- /dev/null
+++ b/Data/SQLite/.gitignore
@@ -0,0 +1,4 @@
+# Build-time symlinks to bundled sqlite3 library
+# Created by prebuild step in Makefile when POCO_SQLITE_UNBUNDLED is not set
+src/sqlite3.c
+src/sqlite3.h
diff --git a/Foundation/.gitignore b/Foundation/.gitignore
new file mode 100644
index 000000000..885addc71
--- /dev/null
+++ b/Foundation/.gitignore
@@ -0,0 +1,32 @@
+# Build-time symlinks to bundled libraries (zlib, pcre2, utf8proc)
+# Created by prebuild step in Makefile when POCO_UNBUNDLED is not set
+src/adler32.c
+src/compress.c
+src/config.h
+src/crc32.c
+src/crc32.h
+src/deflate.c
+src/deflate.h
+src/gzguts.h
+src/infback.c
+src/inffast.c
+src/inffast.h
+src/inffixed.h
+src/inflate.c
+src/inflate.h
+src/inftrees.c
+src/inftrees.h
+src/trees.c
+src/trees.h
+src/zconf.h
+src/zlib.h
+src/zutil.c
+src/zutil.h
+src/pcre2.h
+src/pcre2_*.c
+src/pcre2_*.h
+src/pcre2posix.c
+src/pcre2posix.h
+src/utf8proc.c
+src/utf8proc.h
+src/utf8proc_data.c
diff --git a/JSON/.gitignore b/JSON/.gitignore
new file mode 100644
index 000000000..83d344151
--- /dev/null
+++ b/JSON/.gitignore
@@ -0,0 +1,4 @@
+# Build-time symlinks to bundled pdjson library
+# Created by prebuild step in Makefile when POCO_UNBUNDLED is not set
+src/pdjson.c
+src/pdjson.h
diff --git a/Net/.gitignore b/Net/.gitignore
new file mode 100644
index 000000000..07356a9b8
--- /dev/null
+++ b/Net/.gitignore
@@ -0,0 +1,5 @@
+# Build-time symlinks to bundled libraries
+# Created by prebuild step in Makefile for MinGW builds
+
+# wepoll (Windows epoll emulation for MinGW)
+src/wepoll.c
diff --git a/PDF/.gitignore b/PDF/.gitignore
new file mode 100644
index 000000000..a81da5579
--- /dev/null
+++ b/PDF/.gitignore
@@ -0,0 +1,56 @@
+# Build-time symlinks to bundled libraries (zlib, png, hpdf)
+# Created by prebuild step in Makefile when POCO_UNBUNDLED is not set
+
+# zlib
+src/adler32.c
+src/compress.c
+src/crc32.c
+src/crc32.h
+src/deflate.c
+src/deflate.h
+src/gzguts.h
+src/infback.c
+src/inffast.c
+src/inffast.h
+src/inffixed.h
+src/inflate.c
+src/inflate.h
+src/inftrees.c
+src/inftrees.h
+src/trees.c
+src/trees.h
+src/zconf.h
+src/zlib.h
+src/zutil.c
+src/zutil.h
+
+# libpng
+src/png.c
+src/png.h
+src/pngconf.h
+src/pngdebug.h
+src/pngerror.c
+src/pngget.c
+src/pnginfo.h
+src/pnglibconf.h
+src/pngmem.c
+src/pngpread.c
+src/pngpriv.h
+src/pngread.c
+src/pngrio.c
+src/pngrtran.c
+src/pngrutil.c
+src/pngset.c
+src/pngstruct.h
+src/pngtest.c
+src/pngtrans.c
+src/pngwio.c
+src/pngwrite.c
+src/pngwtran.c
+src/pngwutil.c
+
+# libharu (hpdf)
+src/hpdf.h
+src/hpdf_*.c
+src/hpdf_*.h
+src/t4.h
diff --git a/XML/.gitignore b/XML/.gitignore
new file mode 100644
index 000000000..fe928071b
--- /dev/null
+++ b/XML/.gitignore
@@ -0,0 +1,21 @@
+# Build-time symlinks to bundled expat library
+# Created by prebuild step in Makefile when POCO_UNBUNDLED is not set
+src/ascii.h
+src/asciitab.h
+src/expat.h
+src/expat_config.h
+src/expat_external.h
+src/iasciitab.h
+src/internal.h
+src/latin1tab.h
+src/nametab.h
+src/siphash.h
+src/utf8tab.h
+src/xmlparse.cpp
+src/xmlrole.c
+src/xmlrole.h
+src/xmltok.c
+src/xmltok.h
+src/xmltok_impl.c
+src/xmltok_impl.h
+src/xmltok_ns.c