Another fix for Fedora, needed for building MEX for Octave

mex/build/octave/configure.ac

 dnl Process this file with autoconf to produce a configure script.
 
-dnl Copyright © 2009-2019 Dynare Team
+dnl Copyright © 2009-2020 Dynare Team
 dnl
 dnl This file is part of Dynare.
 dnl
@@ -27,6 +27,8 @@ test "$MKOCTFILE" = no && AC_MSG_ERROR([Octave cannot be found])
 
 CC=$($MKOCTFILE -p CC)
 CXX=$($MKOCTFILE -p CXX)
+AR=$($MKOCTFILE -p AR)
+RANLIB=$($MKOCTFILE -p RANLIB)
 CFLAGS="$($MKOCTFILE -p CFLAGS) -Wall -Wno-parentheses"
 FCFLAGS="$($MKOCTFILE -p FFLAGS) -Wall -std=gnu" # Override -std=legacy that is in FFLAGS in Octave 5
 FFLAGS="$($MKOCTFILE -p FFLAGS) -Wall"

windows/deps/mkoctfile64

@@ -65,6 +65,8 @@ fi
 : ${CXXPICFLAG=""}
 : ${XTRA_CFLAGS="-fopenmp"}
 : ${XTRA_CXXFLAGS="-fopenmp"}
+: ${AR="x86_64-w64-mingw32-ar"}
+: ${RANLIB="x86_64-w64-mingw32-ranlib"}
 
 : ${DEPEND_FLAGS="-M"}
 : ${DEPEND_EXTRA_SED_PATTERN=""}