diff -Naur ORIG/configure.ac PATCHED/configure.ac
--- ORIG/configure.ac	2026-04-14 15:47:36.026545464 +0000
+++ PATCHED/configure.ac	2026-04-14 15:47:36.026626165 +0000
@@ -38,7 +38,6 @@
 AC_PROG_CPP
 AC_PROG_F77([gfortran g77])
 AC_PROG_FC([gfortran g77])
-AC_CONFIG_MACRO_DIR([m4])
 #case $FC in
 #  gfortran) AC_SUBST([HAVE_GFORTRAN], [yes])
 #  g77) AC_SUBST([HAVE_G77], [yes])
diff -Naur ORIG/src/Makefile.am PATCHED/src/Makefile.am
--- ORIG/src/Makefile.am	2026-04-14 15:47:36.026626165 +0000
+++ PATCHED/src/Makefile.am	2026-04-14 15:47:36.026748575 +0000
@@ -111,11 +111,11 @@
 fnlo_tk_yodaout_LDFLAGS = $(my_lib_dirs) $(AM_LDFLAGS) $(LHAPDFLDFLAGS) $(YODALDFLAGS)
 fnlo_tk_statunc_LDFLAGS = $(my_lib_dirs) $(AM_LDFLAGS) $(LHAPDFLDFLAGS) $(YODALDFLAGS)
 fnlo_tk_rootout_LDFLAGS = $(my_lib_dirs) $(AM_LDFLAGS) $(LHAPDFLDFLAGS) $(ROOTLDFLAGS)
-fnlo_tk_merge_LDFLAGS   = $(my_lib_dirs) $(AM_LDFLAGS)
-fnlo_tk_merge2_LDFLAGS  = $(my_lib_dirs) $(AM_LDFLAGS)
-fnlo_tk_append_LDFLAGS  = $(my_lib_dirs) $(AM_LDFLAGS)
-fnlo_tk_modify_LDFLAGS  = $(my_lib_dirs) $(AM_LDFLAGS)
-fnlo_tk_cat_LDFLAGS     = $(my_lib_dirs) $(AM_LDFLAGS)
+fnlo_tk_merge_LDFLAGS   = $(my_lib_dirs) $(AM_LDFLAGS) $(LHAPDFLDFLAGS) $(ROOTLDFLAGS)
+fnlo_tk_merge2_LDFLAGS  = $(my_lib_dirs) $(AM_LDFLAGS) $(LHAPDFLDFLAGS) $(ROOTLDFLAGS)
+fnlo_tk_append_LDFLAGS  = $(my_lib_dirs) $(AM_LDFLAGS) $(LHAPDFLDFLAGS) $(ROOTLDFLAGS)
+fnlo_tk_modify_LDFLAGS  = $(my_lib_dirs) $(AM_LDFLAGS) $(LHAPDFLDFLAGS) $(ROOTLDFLAGS)
+fnlo_tk_cat_LDFLAGS     = $(my_lib_dirs) $(AM_LDFLAGS) $(LHAPDFLDFLAGS) $(ROOTLDFLAGS)
 
 # Files that are required to build the project but that can be
 # recreated IF the necessary autotools etc. are available by:
