From 0738b9f339faf84612069da350eba02fa9b350d3 Mon Sep 17 00:00:00 2001
From: Jeroen Ooms <jeroenooms@gmail.com>
Date: Wed, 8 Jan 2025 14:56:03 +0100
Subject: [PATCH] Use libs from Rtools if found

---
 src/Makevars.win | 25 +++++++++++++++----------
 1 file changed, 15 insertions(+), 10 deletions(-)

diff --git a/src/Makevars.win b/src/Makevars.win
index 1a20721..dd866be 100644
--- a/src/Makevars.win
+++ b/src/Makevars.win
@@ -1,17 +1,22 @@
-RWINLIB = ../windows/harfbuzz
+PKG_CONFIG_NAME = harfbuzz freetype2 fribidi
+PKG_CONFIG ?= $(BINPREF)pkg-config
+PKG_LIBS := $(shell $(PKG_CONFIG) --libs $(PKG_CONFIG_NAME))
 
-PKG_CPPFLAGS = \
-	-I$(RWINLIB)/include/harfbuzz \
-	-I$(RWINLIB)/include/fribidi \
-	-I$(RWINLIB)/include/freetype2
+ifneq ($(PKG_LIBS),)
+$(info using $(PKG_CONFIG_NAME) from Rtools)
+PKG_CPPFLAGS := $(shell $(PKG_CONFIG) --cflags $(PKG_CONFIG_NAME))
+else
+RWINLIB = ../windows/harfbuzz
+PKG_CPPFLAGS = -I$(RWINLIB)/include/harfbuzz -I$(RWINLIB)/include/fribidi -I$(RWINLIB)/include/freetype2
+PKG_LIBS = -L$(RWINLIB)/lib$(R_ARCH) -L$(RWINLIB)/lib -lfribidi -lfreetype -lharfbuzz -lfreetype -lpng -lbz2 -lz -lrpcrt4 -lgdi32 -luuid
+endif
 
-PKG_LIBS = -L$(RWINLIB)/lib$(R_ARCH) -L$(RWINLIB)/lib \
-	-lfribidi -lfreetype -lharfbuzz -lfreetype -lpng -lbz2 -lz -lrpcrt4 -lgdi32 -luuid
+all: $(SHLIB)
 
-all: clean winlibs
+$(OBJECTS): $(RWINLIB)
 
-winlibs:
+$(RWINLIB):
 	"${R_HOME}/bin${R_ARCH_BIN}/Rscript.exe" "../tools/winlibs.R"
 
 clean:
-	rm -f $(OBJECTS) $(SHLIB)
+	rm -f $(SHLIB) $(OBJECTS)