Fix missing build flags

Closes RHBZ #1573115.

utf8proc.spec

@@ -1,7 +1,7 @@
 Summary: Library for processing UTF-8 encoded Unicode strings
 Name:    utf8proc
 Version: 1.3.1
-Release: 1%{?dist}
+Release: 2%{?dist}
 License: BSD
 Group:   System Environment/Libraries
 URL:     http://julialang.org/utf8proc/
@@ -37,10 +37,10 @@ strings, unless you want to allocate memory yourself.
 %setup -qn %{name}-%{version}
 
 %build
-make %{?_smp_mflags} CFLAGS="%{optflags}"
+make %{?_smp_mflags} CFLAGS="%{optflags}" LDFLAGS="%{__global_ldflags}"
 
 %check
-make %{?_smp_mflags} CFLAGS="%{optflags}" \
+make %{?_smp_mflags} CFLAGS="%{optflags}" LDFLAGS="%{__global_ldflags}" \
      test/normtest test/graphemetest test/printproperty \
      test/charwidth test/normtest test/graphemetest test/charwidth
 
@@ -60,6 +60,9 @@ rm %{buildroot}%{_libdir}/libutf8proc.a
 %{_libdir}/libutf8proc.so
 
 %changelog
+* Mon Apr 30 2018  Milan Bouchet-Valat <nalimilan@club.fr> - 1.3.1-2
+- Fix missing build flags (RHBZ #1573115).
+
 * Tue Nov 03 2015  Milan Bouchet-Valat <nalimilan@club.fr> - 1.3.1-1
 - New upstream release.