Merge pull request #92 from CESNET/unirec-fix-el9-build

Unirec fix el9 build

Author: sedmicha

extra_plugins/output/unirec/ipfixcol2-unirec-output.spec.in

@@ -11,7 +11,7 @@ Vendor:         CESNET, z.s.p.o.
 Packager:
 
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}
-BuildRequires:  gcc >= 4.8, cmake >= 2.8.8, make
+BuildRequires:  gcc >= 4.8, gcc-c++ >= 4.8, cmake >= 2.8.8, make
 BuildRequires:  ipfixcol2-devel, libfds-devel, /usr/bin/rst2man
 BuildRequires:  libtrap-devel, unirec >= 2.3.0
 Requires:       libtrap >= 0.12.0, ipfixcol2 >= 2.0.0, libfds >= 0.1.0
@@ -30,6 +30,7 @@ Plugin for converting IPFIX data to UniRec format.
 
 # Build source code
 %build
+%global _vpath_builddir .
 %cmake .
 make %{?_smp_mflags}