Create DSO symlinks automatically

If there are unpackaged symlinks, build will fail with unpackaged files.
People can %undefine __brp_ldconfig if they need to and they should make
sure that they call ldconfig themselves.

Right now, script doesn't guide packagers what to do, but it's not
prerequisite.

Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>

brp-ldconfig

@@ -0,0 +1,10 @@
+#!/bin/sh -efu
+# Force creating of DSO symlinks.
+
+# If using normal root, avoid changing anything.
+if [ -z "$RPM_BUILD_ROOT" -o "$RPM_BUILD_ROOT" = "/" ]; then
+  exit 0
+fi
+
+/sbin/ldconfig -N -r "$RPM_BUILD_ROOT"
+# TODO: warn if it created new symlinks and guide people.

macros

@@ -100,6 +100,7 @@
 
 # Build root policy macros. Standard naming:
 # convert all '-' in basename to '_', add two leading underscores.
+%__brp_ldconfig /usr/lib/rpm/redhat/brp-ldconfig
 %__brp_compress /usr/lib/rpm/brp-compress
 %__brp_strip /usr/lib/rpm/brp-strip %{__strip}
 %__brp_strip_comment_note /usr/lib/rpm/brp-strip-comment-note %{__strip} %{__objdump}
@@ -108,6 +109,7 @@
 %__brp_python_hardlink /usr/lib/rpm/brp-python-hardlink
 
 %__os_install_post    \
+    %{?__brp_ldconfig} \
     %{?__brp_compress} \
     %{!?__debug_package:\
     %{?__brp_strip} \

redhat-rpm-config.spec

@@ -6,7 +6,7 @@
 
 Summary: Red Hat specific rpm configuration files
 Name: redhat-rpm-config
-Version: 87
+Version: 88
 Release: 1%{?dist}
 # No version specified.
 License: GPL+
@@ -64,6 +64,9 @@ Source600: kmod.attr
 Source601: kmod.prov
 Source602: libsymlink.attr
 
+# BRPs
+Source700: brp-ldconfig
+
 # Documentation
 Source900: buildflags.md
 
@@ -123,6 +126,8 @@ install -p -m 755 -t %{buildroot}%{rrcdir} find-*
 mkdir -p %{buildroot}%{rrcdir}/find-provides.d
 install -p -m 644 -t %{buildroot}%{rrcdir}/find-provides.d firmware.prov modalias.prov
 
+install -p -m 755 -t %{buildroot}%{rrcdir} brp-*
+
 mkdir -p %{buildroot}%{_rpmconfigdir}/macros.d
 install -p -m 644 -t %{buildroot}%{_rpmconfigdir}/macros.d macros.*
 
@@ -140,6 +145,7 @@ install -p -m 755 -t %{buildroot}%{_rpmconfigdir} kmod.prov
 %{rrcdir}/config.*
 %{rrcdir}/find-provides
 %{rrcdir}/find-requires
+%{rrcdir}/brp-ldconfig
 %{_fileattrsdir}/*.attr
 %{_rpmconfigdir}/kmod.prov
 %{_rpmconfigdir}/macros.d/macros.*-srpm
@@ -160,6 +166,9 @@ install -p -m 755 -t %{buildroot}%{_rpmconfigdir} kmod.prov
 %{_rpmconfigdir}/macros.d/macros.kmp
 
 %changelog
+* Thu Jan 29 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 88-1
+- Create DSO symlinks automatically
+
 * Mon Jan 29 2018 Florian Weimer <fweimer@redhat.com> - 87-1
 - Build flags: Disable -z defs again (#1535422)