native gcc: draft libmpfr (not working)

cross/pkgs/gcc/.gitignore

@@ -1,2 +1,3 @@
+!src/fetch.json
 src/
 out/

cross/pkgs/gcc/build.sh

@@ -30,11 +30,25 @@ failOnError $? "fetching sources"
 
 echo -n Building libgmp...
 (
-	cd libgmp
-	patch -p0 < $WORKING_DIR/patch/libgmp.patch
-	./configure --host=x86_64-jehanne --prefix=/pkgs/libgmp/6.1.2/
-	make
+	cd libgmp &&
+	patch -p0 < $WORKING_DIR/patch/libgmp.patch &&
+	./configure --host=x86_64-jehanne --prefix=/pkgs/libgmp/6.1.2/ &&
+	make &&
 	make DESTDIR=$JEHANNE install
 ) >> $WORKING_DIR/gcc.build.log
 failOnError $? "Building libgmp"
 echo done.
+
+# Copy to /posix (to emulate bind during cross compilation)
+cp $JEHANNE/pkgs/libgmp/6.1.2/* $JEHANNE/posix
+
+echo -n Building libmpfr...
+(
+	cd libmpfr
+	patch -p0 < $WORKING_DIR/patch/libmpfr.patch
+	./configure --host=x86_64-jehanne --prefix=/pkgs/libmpfr/4.0.1/
+	make
+	make DESTDIR=$JEHANNE install
+) >> $WORKING_DIR/gcc.build.log
+failOnError $? "Building libmpfr"
+echo done.

cross/pkgs/gcc/patch/libmpfr.patch

@@ -0,0 +1,11 @@
+diff -Naru ../orig/config.sub ./config.sub
+--- ../orig/config.sub	2018-11-26 14:23:59.224388851 +0100
++++ ./config.sub	2018-11-26 14:24:55.300412850 +0100
+@@ -1416,6 +1416,7 @@
+ 	      | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
+ 	      | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \
+ 	      | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es* \
++	      | -jehanne* \
+ 	      | -onefs* | -tirtos* | -phoenix* | -fuchsia* | -redox*)
+ 	# Remember, each alternative MUST END IN *, to match a version number.
+ 		;;

cross/pkgs/gcc/src/fetch.json

@@ -8,5 +8,17 @@
 		"RemovePrefix": true,
 		"Exclude": [
 		]
+	},
+	
+	"libmpfr" : {
+		"Upstream":"https://www.mpfr.org/mpfr-current/mpfr-4.0.1.tar.bz2",
+		"Digest": {
+			"sha256":"a4d97610ba8579d380b384b225187c250ef88cfe1d5e7226b89519374209b86b"
+		},
+		"Compress":"bzip2",
+		"RemovePrefix": true,
+		"Exclude": [
+		]
 	}
+		
 }