f30 libiw isn't linked to libm.so

iwlib-0.1.0-libm.patch

@@ -0,0 +1,10 @@
+--- iwlib-0.1.0/iwlib.cabal~	2018-01-31 07:00:13.000000000 +0800
++++ iwlib-0.1.0/iwlib.cabal	2019-03-04 11:24:19.033283194 +0800
+@@ -24,5 +24,5 @@
+   includes:            iwlib.h
+   default-language:    Haskell2010
+   exposed-modules:     Network.IWlib
+-  extra-libraries:     iw
++  extra-libraries:     iw, m
+   ghc-options:         -Wall
+\ No newline at end of file

xmobar.spec

@@ -24,6 +24,7 @@ Source1:        https://hackage.haskell.org/package/%{iwlib}/%{iwlib}.tar.gz
 
 Source10:       xmobar.desktop
 Patch0:         xmobar-0.23.1-flags.patch
+Patch1:         iwlib-0.1.0-libm.patch
 
 # Begin cabal-rpm deps:
 BuildRequires:  ghc-Cabal-devel
@@ -110,6 +111,7 @@ This package provides the Haskell %{name} library development files.
 %setup -q -a1
 # End cabal-rpm setup
 %patch0 -p1 -b .orig
+%patch1 -p0 -b .orig
 
 
 %build