Fix build on 32bits arches and on epel 7

libvncserver.spec

@@ -21,7 +21,8 @@ Patch102:     LibVNCServer-0.9.10-system-crypto-policy.patch
 Patch106:     CVE-2018-15127.patch
 Patch107:     CVE-2019-15681.patch
 
-BuildRequires:  cmake
+BuildRequires:  gcc-c++
+BuildRequires:  cmake3
 BuildRequires:  pkgconfig(gnutls)
 BuildRequires:  pkgconfig(sdl2)
 BuildRequires:  pkgconfig(libsystemd)
@@ -83,7 +84,9 @@ developing applications that use %{name}.
 %prep
 %setup -q -n %{name}-LibVNCServer-%{version}
 
+%if "%{_libdir}" == "/usr/lib64"
 %patch1 -p1
+%endif
 
 %patch10 -p1
 %patch11 -p1
@@ -106,7 +109,7 @@ done
 %build
 mkdir -p %{_target_platform}
 pushd %{_target_platform}
-%cmake ..
+%cmake3 ..
 popd
 %make_build -C %{_target_platform}