[PATCH v2 5/5] systemd: add RRECOMMENDS for weak dependencies, if enabled

["Luca Bocassi" <luca.boccassi@gmail.com>]

From: Luca Boccassi <luca.boccassi@microsoft.com>

Some libraries are now dlopen'ed and skipped at runtime if
not available. Add them to the RRECOMMENDS list, to allow
users to exclude them for smaller images even if generally
enabled at build time.

Signed-off-by: Luca Boccassi <luca.boccassi@microsoft.com>
---
v2: set the rrecommends directly in PACKAGECONFIG

 meta/recipes-core/systemd/systemd_247.1.bb | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/meta/recipes-core/systemd/systemd_247.1.bb b/meta/recipes-core/systemd/systemd_247.1.bb
index f20e86d94b..8814677bf2 100644
--- a/meta/recipes-core/systemd/systemd_247.1.bb
+++ b/meta/recipes-core/systemd/systemd_247.1.bb
@@ -111,6 +111,9 @@ PACKAGECONFIG_remove_libc-musl = " \
 
 CFLAGS_append_libc-musl = " -D__UAPI_DEF_ETHHDR=0 "
 
+# Some of the dependencies are weak-style recommends - if not available at runtime,
+# systemd won't fail but the library-related feature will be skipped with a warning.
+
 # Use the upstream systemd serial-getty@.service and rely on
 # systemd-getty-generator instead of using the OE-core specific
 # systemd-serialgetty.bb - not enabled by default.
@@ -123,7 +126,7 @@ PACKAGECONFIG[binfmt] = "-Dbinfmt=true,-Dbinfmt=false"
 PACKAGECONFIG[bzip2] = "-Dbzip2=true,-Dbzip2=false,bzip2"
 PACKAGECONFIG[cgroupv2] = "-Ddefault-hierarchy=unified,-Ddefault-hierarchy=hybrid"
 PACKAGECONFIG[coredump] = "-Dcoredump=true,-Dcoredump=false"
-PACKAGECONFIG[cryptsetup] = "-Dlibcryptsetup=true,-Dlibcryptsetup=false,cryptsetup"
+PACKAGECONFIG[cryptsetup] = "-Dlibcryptsetup=true,-Dlibcryptsetup=false,cryptsetup,,cryptsetup"
 PACKAGECONFIG[dbus] = "-Ddbus=true,-Ddbus=false,dbus"
 PACKAGECONFIG[efi] = "-Defi=true,-Defi=false"
 PACKAGECONFIG[gnu-efi] = "-Dgnu-efi=true -Defi-libdir=${STAGING_LIBDIR} -Defi-includedir=${STAGING_INCDIR}/efi,-Dgnu-efi=false,gnu-efi"
@@ -144,8 +147,8 @@ PACKAGECONFIG[iptc] = "-Dlibiptc=true,-Dlibiptc=false,iptables"
 PACKAGECONFIG[journal-upload] = "-Dlibcurl=true,-Dlibcurl=false,curl"
 PACKAGECONFIG[kmod] = "-Dkmod=true,-Dkmod=false,kmod"
 PACKAGECONFIG[ldconfig] = "-Dldconfig=true,-Dldconfig=false,,ldconfig"
-PACKAGECONFIG[libidn] = "-Dlibidn=true,-Dlibidn=false,libidn"
-PACKAGECONFIG[libidn2] = "-Dlibidn2=true,-Dlibidn2=false,libidn2"
+PACKAGECONFIG[libidn] = "-Dlibidn=true,-Dlibidn=false,libidn,,libidn"
+PACKAGECONFIG[libidn2] = "-Dlibidn2=true,-Dlibidn2=false,libidn2,,libidn2"
 PACKAGECONFIG[localed] = "-Dlocaled=true,-Dlocaled=false"
 PACKAGECONFIG[logind] = "-Dlogind=true,-Dlogind=false"
 PACKAGECONFIG[lz4] = "-Dlz4=true,-Dlz4=false,lz4"
@@ -163,7 +166,7 @@ PACKAGECONFIG[pam] = "-Dpam=true,-Dpam=false,libpam,${PAM_PLUGINS}"
 PACKAGECONFIG[pcre2] = "-Dpcre2=true,-Dpcre2=false,libpcre2"
 PACKAGECONFIG[polkit] = "-Dpolkit=true,-Dpolkit=false"
 PACKAGECONFIG[portabled] = "-Dportabled=true,-Dportabled=false"
-PACKAGECONFIG[qrencode] = "-Dqrencode=true,-Dqrencode=false,qrencode"
+PACKAGECONFIG[qrencode] = "-Dqrencode=true,-Dqrencode=false,qrencode,,qrencode"
 PACKAGECONFIG[quotacheck] = "-Dquotacheck=true,-Dquotacheck=false"
 PACKAGECONFIG[randomseed] = "-Drandomseed=true,-Drandomseed=false"
 PACKAGECONFIG[resolved] = "-Dresolve=true,-Dresolve=false"
-- 
2.29.2