diff -Nru orig/rgdal/src/Makevars.ucrt patched/rgdal/src/Makevars.ucrt
--- orig/rgdal/src/Makevars.ucrt	2023-04-18 15:23:01.000000000 +0200
+++ patched/rgdal/src/Makevars.ucrt	2023-10-10 12:24:03.316441300 +0200
@@ -1,9 +1,10 @@
 
 PKG_CPPFLAGS =\
 	-DPROJ_H_API
-LIBSHARPYUV = $(or $(and $(wildcard $(R_TOOLS_SOFT)/lib/libsharpyuv.a),-lsharpyuv),)
+ifeq (,$(shell pkg-config --version 2>/dev/null))
+  LIBSHARPYUV = $(or $(and $(wildcard $(R_TOOLS_SOFT)/lib/libsharpyuv.a),-lsharpyuv),)
 
-PKG_LIBS = \
+  PKG_LIBS = \
         -fopenmp -lgdal -larmadillo -lopenblas -lgfortran -lquadmath -lblosc -lkea -lhdf5_cpp -lhdf5 -lgta -lsqlite3 -lmysqlclient -lspatialite -lminizip -lproj -lgeos_c -lgeos  \
         -ljson-c -lnetcdf -lpq -lpgcommon -lpgport \
         -lpoppler -llcms2 -lfreetype -lharfbuzz -lfreetype -llz4 -lpcre2-8 \
@@ -13,6 +14,9 @@
         -lopenjp2 -ljasper -lpng -ljpeg -ltiff -lwebp -lgeotiff -lgif -lxml2 -llzma \
         -lodbc32 -lodbccp32 -liconv -lpsapi -lwldap32 -lsecur32 -lgdi32 -lnormaliz \
         -lbz2 -lzstd -lz -lcrypto -lcrypt32 -lcfitsio -lws2_32
+else
+  PKG_LIBS = $(shell pkg-config --libs gdal proj)
+endif
 
 all: clean  winlibs