build: Add meson rpmbuild support

Beyond being a prerequisite for removing autotools support, this capability
served as validation that the meson conversion generated all the same files
as autotools and installed them to the same expected locations.

The procedure to use the rpmbuild.sh script is:

    meson setup build
    meson compile -C build rhel/ndctl.spec
    ./rpmbuild.sh build/rhel/ndctl.spec

Link: https://lore.kernel.org/r/164141837841.3990253.11379060834465142446.stgit@dwillia2-desk3.amr.corp.intel.com
Tested-by: Alison Schofield <alison.schofield@intel.com>
Tested-by: Vaibhav Jain <vaibhav@linux.ibm.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>

7 files changed, 95 insertions, 2 deletions

diff --git a/.gitignore b/.gitignore
index 91c5e37b..df8245dc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,7 +35,7 @@ daxctl/lib/libdaxctl.pc
 ndctl/config.h
 ndctl/lib/libndctl.pc
 ndctl/ndctl
-rhel/
+rhel/ndctl.spec
 sles/ndctl.spec
 version.m4
 *.swp
diff --git a/Makefile.am b/Makefile.am
index daea39f5..b78059b0 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -22,6 +22,7 @@ noinst_SCRIPTS = rhel/ndctl.spec sles/ndctl.spec
 CLEANFILES += $(noinst_SCRIPTS)
 
 do_rhel_subst = sed -e 's,VERSION,$(VERSION),g' \
+            -e 's,MESON,0,g' \
             -e 's,DAX_DNAME,daxctl-devel,g' \
             -e 's,CXL_DNAME,cxl-devel,g' \
             -e 's,DNAME,ndctl-devel,g' \
@@ -31,6 +32,7 @@ do_rhel_subst = sed -e 's,VERSION,$(VERSION),g' \
 	    -e 's,LNAME,ndctl-libs,g'
 
 do_sles_subst = sed -e 's,VERSION,$(VERSION),g' \
+            -e 's,MESON,0,g' \
             -e 's,DAX_DNAME,libdaxctl-devel,g' \
             -e 's,CXL_DNAME,libcxl-devel,g' \
             -e 's,DNAME,libndctl-devel,g' \
diff --git a/meson.build b/meson.build
index 272ac642..b22fb2e5 100644
--- a/meson.build
+++ b/meson.build
@@ -278,3 +278,9 @@ if get_option('docs').enabled()
 endif
 subdir('test')
 subdir('contrib')
+
+# only support spec file generation from git builds
+if version_tag == ''
+  subdir('rhel')
+  subdir('sles')
+endif
diff --git a/ndctl.spec.in b/ndctl.spec.in
index cb911194..94472678 100644
--- a/ndctl.spec.in
+++ b/ndctl.spec.in
@@ -6,14 +6,20 @@ License:	GPLv2
 Url:		https://github.com/pmem/ndctl
 Source0:	https://github.com/pmem/%{name}/archive/v%{version}.tar.gz#/%{name}-%{version}.tar.gz
 
+%define with_meson MESON
 Requires:	LNAME%{?_isa} = %{version}-%{release}
 Requires:	DAX_LNAME%{?_isa} = %{version}-%{release}
 Requires:	CXL_LNAME%{?_isa} = %{version}-%{release}
 BuildRequires:	autoconf
 %if 0%{?rhel} < 9
 BuildRequires:	asciidoc
+%if !%{with_meson}
 %define asciidoc --disable-asciidoctor
+%endif
 %else
+%if %{with_meson}
+%define asciidoctor -Dasciidoctor=enabled
+%endif
 BuildRequires:	rubygem-asciidoctor
 %endif
 BuildRequires:	xmlto
@@ -30,6 +36,10 @@ BuildRequires:	keyutils-libs-devel
 BuildRequires:	systemd-rpm-macros
 BuildRequires:	iniparser-devel
 
+%if %{with_meson}
+BuildRequires:	meson
+%endif
+
 %description
 Utility library for managing the "libnvdimm" subsystem.  The "libnvdimm"
 subsystem defines a kernel device model and control message interface for
@@ -117,17 +127,30 @@ libcxl is a library for enumerating and communicating with CXL devices.
 %setup -q ndctl-%{version}
 
 %build
+%if %{with_meson}
+%meson %{?asciidoctor} -Dversion-tag=%{version}
+%meson_build
+%else
 echo %{version} > version
 ./autogen.sh
 %configure --disable-static --disable-silent-rules %{?asciidoc}
 make %{?_smp_mflags}
+%endif
 
 %install
+%if %{with_meson}
+%meson_install
+%else
 %make_install
 find $RPM_BUILD_ROOT -name '*.la' -exec rm -f {} ';'
+%endif
 
 %check
+%if %{with_meson}
+%meson_test
+%else
 make check
+%endif
 
 %ldconfig_scriptlets -n LNAME
 
diff --git a/rhel/meson.build b/rhel/meson.build
new file mode 100644
index 00000000..8672098d
--- /dev/null
+++ b/rhel/meson.build
@@ -0,0 +1,23 @@
+rhel_spec1 = vcs_tag(
+    input : '../ndctl.spec.in',
+    output : 'ndctl.spec.in',
+    command: vcs_tagger,
+    replace_string : 'VERSION',
+)
+
+rhel_spec2 = custom_target('ndctl.spec',
+  command : [
+    'sed', '-e', 's,MESON,1,g',
+	   '-e', 's,DAX_DNAME,daxctl-devel,g',
+	   '-e', 's,CXL_DNAME,cxl-devel,g',
+	   '-e', 's,DNAME,ndctl-devel,g',
+	   '-e', '/^%defattr.*/d',
+	   '-e', 's,DAX_LNAME,daxctl-libs,g',
+	   '-e', 's,CXL_LNAME,cxl-libs,g',
+	   '-e', 's,LNAME,ndctl-libs,g',
+	   '@INPUT@'
+  ],
+  input : rhel_spec1,
+  output : 'ndctl.spec',
+  capture : true,
+)
diff --git a/rpmbuild.sh b/rpmbuild.sh
index fe4154b6..b1f4d9e5 100755
--- a/rpmbuild.sh
+++ b/rpmbuild.sh
@@ -1,6 +1,9 @@
 #!/bin/bash
+
+spec=${1:-$(dirname $0)/rhel/ndctl.spec)}
+
 pushd $(dirname $0) >/dev/null
 [ ! -d ~/rpmbuild/SOURCES ] && echo "rpmdev tree not found" && exit 1
 ./make-git-snapshot.sh
 popd > /dev/null
-rpmbuild -ba $(dirname $0)/rhel/ndctl.spec
+rpmbuild --nocheck -ba $spec
diff --git a/sles/meson.build b/sles/meson.build
new file mode 100644
index 00000000..21c72cb4
--- /dev/null
+++ b/sles/meson.build
@@ -0,0 +1,36 @@
+sles_spec1 = vcs_tag(
+    input : '../ndctl.spec.in',
+    output : 'ndctl.spec.sles.in',
+    command: vcs_tagger,
+    replace_string : 'VERSION',
+)
+
+header = files('header')
+
+sles_spec2 = custom_target('ndctl.spec.in',
+  command : [
+    'cat', header, '@INPUT@',
+  ],
+  input : sles_spec1,
+  output : 'ndctl.spec.in',
+  capture : true,
+)
+
+sles_spec3 = custom_target('ndctl.spec',
+  command : [
+    'sed', '-e', 's,MESON,1,g',
+           '-e', 's,DAX_DNAME,libdaxctl-devel,g',
+           '-e', 's,CXL_DNAME,libcxl-devel,g',
+           '-e', 's,DNAME,libndctl-devel,g',
+           '-e', 's,%license,%doc,g',
+           '-e', 's,\(^License:.*GPL\)v2,\1-2.0,g',
+           '-e', 's,DAX_LNAME,libdaxctl@0@,g'.format(LIBDAXCTL_CURRENT - LIBDAXCTL_AGE),
+           '-e', 's,CXL_LNAME,libcxl@0@,g'.format(LIBCXL_CURRENT - LIBCXL_AGE),
+           '-e', 's,LNAME,libndctl@0@,g'.format(LIBNDCTL_CURRENT - LIBNDCTL_AGE),
+	   '@INPUT@'
+  ],
+
+  input : sles_spec2,
+  output : 'ndctl.spec',
+  capture : true,
+)