Introduce build-conditions for groff, systemtap, syslog tests, and tcsh

This allows to build perl without need of groff etc.

groff and systemtap are enabled by default. syslog tests are disabled
by default because they only polute system log. tcsh is disabled by
default because it seems unneeded (and might be removed completely).

perl.spec

@@ -20,15 +20,24 @@
 # same as we provide in /usr/lib/rpm/macros.d/macros.perl
 %global perl5_testdir   %{_libexecdir}/perl5-tests
 
+# Optional features
 # We can bootstrap without gdbm
 %bcond_without gdbm
+# Support for groff, bug #135101
+%bcond_without perl_enables_groff
+# Run syslog tests
+%bcond_with perl_enables_syslog_test
+# SystemTap support
+%bcond_without perl_enables_systemtap
+# <> operator uses File::Glob nowadays. CSH is not needed.
+%bcond_with perl_enables_tcsh
 # We can skip %%check phase
 %bcond_without test
 
 Name:           perl
 Version:        %{perl_version}
 # release number must be even higher, because dual-lived modules will be broken otherwise
-Release:        390%{?dist}
+Release:        391%{?dist}
 Epoch:          %{perl_epoch}
 Summary:        Practical Extraction and Report Language
 Group:          Development/Languages
@@ -346,8 +355,10 @@ BuildRequires:  gdbm-devel
 %endif
 # glibc-common for iconv
 BuildRequires:  glibc-common
+%if %{with perl_enables_groff}
 # Build-require groff tools for populating %%Config correctly, bug #135101
 BuildRequires:  groff-base
+%endif
 BuildRequires:  libdb-devel
 BuildRequires:  make
 %if !%{defined perl_bootstrap}
@@ -355,16 +366,22 @@ BuildRequires:  perl
 BuildRequires:  perl-generators
 %endif
 BuildRequires:  sed
+%if %{with perl_enables_systemtap}
 BuildRequires:  systemtap-sdt-devel
+%endif
 BuildRequires:  tar
+%if %{with perl_enables_tcsh}
 BuildRequires:  tcsh
+%endif
 BuildRequires:  zlib-devel
 
 # For tests
 %if %{with test}
 BuildRequires:  procps
+%if %{with perl_enables_syslog_test}
 BuildRequires:  rsyslog
 %endif
+%endif
 
 # The long line of Perl provides.
 
@@ -471,7 +488,9 @@ Requires:       libdb-devel
 Requires:       gdbm-devel
 %endif
 Requires:       glibc-devel
+%if %{with perl_enables_systemtap}
 Requires:       systemtap-sdt-devel
+%endif
 Requires:       perl(ExtUtils::ParseXS)
 Requires:       %perl_compat
 # Match library and header files when downgrading releases
@@ -2425,8 +2444,10 @@ Group:          Development/Libraries
 License:        GPL+ or Artistic
 Epoch:          0
 Version:        3.25
+%if %{with perl_enables_groff}
 # Pod::Perldoc::ToMan executes roff
 Requires:       groff-base
+%endif
 Requires:       %perl_compat
 Requires:       perl(File::Temp) >= 0.22
 Requires:       perl(HTTP::Tiny)
@@ -3211,6 +3232,10 @@ echo "RPM Build arch: %{_arch}"
         -Dcc='%{__cc}' \
         -Dcf_by='Red Hat, Inc.' \
         -Dprefix=%{_prefix} \
+%if %{without perl_enables_groff}
+        -Dman1dir="%{_mandir}/man1" \
+        -Dman3dir="%{_mandir}/man3" \
+%endif
         -Dvendorprefix=%{_prefix} \
         -Dsiteprefix=%{_prefix}/local \
         -Dsitelib="%{_prefix}/local/share/perl5" \
@@ -3229,7 +3254,11 @@ echo "RPM Build arch: %{_arch}"
         -Duseshrplib \
         -Dusethreads \
         -Duseithreads \
+%if %{with perl_enables_systemtap}
         -Dusedtrace='/usr/bin/dtrace' \
+%else
+        -Uusedtrace \
+%endif
         -Duselargefiles \
         -Dd_semctl_semun \
         -Di_db \
@@ -3362,6 +3391,7 @@ for dir in `find ext/ -type d -name t -maxdepth 2` ; do
     tar -cf - $dir | ( cd %{buildroot}%{perl5_testdir}/perl-tests/t && tar -xf - )
 done
 
+%if %{with perl_enables_systemtap}
 # Systemtap tapset install
 mkdir -p %{buildroot}%{tapsetdir}
 %ifarch %{multilib_64_archs}
@@ -3374,6 +3404,7 @@ sed \
   -e "s|LIBRARY_PATH|%{_libdir}/%{soname}|" \
   %{SOURCE4} \
   > %{buildroot}%{tapsetdir}/%{libperl_stp}
+%endif
 
 # TODO: Canonicalize test files (rewrite intrerpreter path, fix permissions)
 # XXX: We cannot rewrite ./perl before %%check phase. Otherwise the test
@@ -3445,8 +3476,10 @@ popd
 %exclude %{archlib}/CORE/*.h
 %exclude %{_libdir}/libperl.so
 %exclude %{_mandir}/man1/perlxs*
+%if %{with perl_enables_systemtap}
 %exclude %dir %{_datadir}/systemtap
 %exclude %dir %{_datadir}/systemtap/tapset
+%endif
 
 # utils
 %exclude %{_bindir}/c2ph
@@ -4325,10 +4358,12 @@ popd
 %{archlib}/CORE/*.h
 %{_libdir}/libperl.so
 %{_mandir}/man1/perlxs*
+%if %{with perl_enables_systemtap}
 %dir %{_datadir}/systemtap
 %dir %{_datadir}/systemtap/tapset
 %{tapsetdir}/%{libperl_stp}
 %doc perl-example.stp
+%endif
 
 %files macros
 %{_rpmconfigdir}/macros.d/macros.perl
@@ -5399,6 +5434,9 @@ popd
 
 # Old changelog entries are preserved in CVS.
 %changelog
+* Fri Mar 31 2017 Petr Pisar <ppisar@redhat.com> - 4:5.24.1-391
+- Introduce build-conditions for groff, systemtap, syslog tests, and tcsh
+
 * Wed Mar 08 2017 Petr Pisar <ppisar@redhat.com> - 4:5.24.1-390
 - Fix a null-pointer dereference on malformed code (RT#130815)
 - Fix an use-after-free in substr() that modifies a magic variable (RT#129340)