Add support for LTS versioned sub-packages

This change allows you to use one common spec file for two purposes:

1. If the name is set to "make" you get the same make-X.Y packages
as before.

2. If the name is set to "make-latest" you get a make-latest
meta-package and a makeXY subpackage on which it depends.  The
subpackage installs in /opt (or elsewhere) to avoid conflict with an
installed make-X.Y.  In this case, the user should edit:

  %global make make43   <-- to match the version being installed
  %global _prefix /opt/rh/%{make}  <-- to where you want it

make.spec

@@ -1,13 +1,31 @@
 # -*- coding: utf-8 -*-
-Summary: A GNU tool which simplifies the build process for users
+# This decides the SRPM name.  Set to "make" for a rolling release
+# (like Fedora) or "make-latest" for a long term release that needs
+# optional versioned updates.
 Name: make
 Epoch: 1
 Version: 4.3
-Release: 8%{?dist}
+Release: 9%{?dist}
 License: GPLv3+
 URL: http://www.gnu.org/software/make/
 Source: ftp://ftp.gnu.org/gnu/make/make-%{version}.tar.gz
 
+%if "%{name}" != "make"
+# Set this to the sub-package base name, for "make-latest"
+%global make make43
+%if 0%{?rhel} > 0
+%global _prefix /opt/rh/%{make}
+%else
+# We intentionally do not define a case for Fedora, as it should not
+# need this functionality, and letting it error avoids accidents.
+%{error:"Each downstream must specify its own /opt namespace"}
+%endif
+Summary: Meta package to include latest version of make
+%else
+%global make %{name}
+Summary: A GNU tool which simplifies the build process for users
+%endif
+
 %if 0%{?rhel} > 0
 # This gives the user the option of saying --with guile, but defaults to WITHOUT
 %bcond_with guile
@@ -46,7 +64,18 @@ BuildRequires: pkgconfig(guile-2.2)
 %endif
 BuildRequires: gcc
 
-%description
+%if "%{name}" != "make"
+# We're still on the make-latest package
+Requires: %{make}
+%description -n make-latest
+The latest GNU Make, with a version-specific install
+%files -n make-latest
+
+%package -n %{make}
+Summary: A GNU tool which simplifies the build process for users
+%endif
+
+%description -n %{make}
 A GNU tool for controlling the generation of executables and other
 non-source files of a program from the program's source files. Make
 allows users to build and install packages without any significant
@@ -54,14 +83,14 @@ knowledge about the details of the build process. The details about
 how the program should be built are provided for make in the program's
 makefile.
 
-%package devel
+%package -n %{make}-devel
 Summary: Header file for externally visible definitions
 
-%description devel
-The make-devel package contains gnumake.h.
+%description -n %{make}-devel
+The %{make}-devel package contains gnumake.h.
 
 %prep
-%autosetup -p1
+%autosetup -n make-%{version} -p1
 
 rm -f tests/scripts/features/parallelism.orig
 
@@ -83,14 +112,14 @@ ln -sf make ${RPM_BUILD_ROOT}/%{_bindir}/gmake
 ln -sf make.1 ${RPM_BUILD_ROOT}/%{_mandir}/man1/gmake.1
 rm -f ${RPM_BUILD_ROOT}/%{_infodir}/dir
 
-%find_lang %name
+%find_lang make
 
 %check
 echo ============TESTING===============
 /usr/bin/env LANG=C make check && true
 echo ============END TESTING===========
 
-%files  -f %{name}.lang
+%files -n %{make} -f make.lang
 %license COPYING
 %doc NEWS README AUTHORS
 %{_bindir}/*
@@ -98,10 +127,13 @@ echo ============END TESTING===========
 %{_infodir}/*.info*
 %{_includedir}/gnumake.h
 
-%files devel
+%files -n %{make}-devel
 %{_includedir}/gnumake.h
 
 %changelog
+* Wed Jun 29 2022 DJ Delorie <dj@redhat.com> - 1:4.3-9
+- Enable long-term supported builds.
+
 * Fri Apr 8 2022 DJ Delorie <dj@redhat.com> - 1:4.3-8
 - Rewrite filter/filter-out to avoid large stack usage. BZ #2010506
 - Require perl core modules for testsuite