dovecot: Fix managesieve-login needs libdovecot-login

When trying to use managesieve my MUA complained sieve wasn't supported.
On investigation dovecot logs the following could be seen:

    Aug 16 00:28:44 managesieve-login: Fatal: master:
      service(managesieve-login): child 1430 returned error 127
    Aug 16 00:31:32 managesieve-login: Error: Error loading shared
      library libdovecot-login.so.0: No such file or directory
      (needed by /usr/lib/dovecot/managesieve-login)
    Aug 16 00:31:32 managesieve-login: Error: Error loading
      shared library libdovecot.so.0: No such file or directory
      (needed by /usr/lib/dovecot/managesieve-login)
    Aug 16 00:31:32 managesieve-login: Error: Error relocating
      /usr/lib/dovecot/managesieve-login: net_ip2addr: symbol not found

The issue (verified with readelf on non-working build and build with my fix)
is that there is no RPATH information in the pigeonhole binaries (like
managesieve-login).

The dovecot-config that is 'installed' in the staging dir
assumes that plugins will be built on the same host as the installed files.
The 'installed' dovecot-config (partial) looks like:

LIBDOVECOT='-L/usr/lib/dovecot -ldovecot'
LIBDOVECOT_LOGIN='-ldovecot-login -L/home/user/Build/openwrt/openwrt-ath79/staging_dir/target-mips_24kc_musl/usr/lib -lssl -lcrypto'
LIBDOVECOT_SQL=-ldovecot-sql
LIBDOVECOT_COMPRESS=-ldovecot-compression
LIBDOVECOT_LDA=-ldovecot-lda
LIBDOVECOT_STORAGE='-ldovecot-storage '
LIBDOVECOT_DSYNC=-ldovecot-dsync
LIBDOVECOT_LIBFTS=-ldovecot-fts

The solution I used was to modify dovecot-config to add the rpath to
DOVECOT_BINARY_LDFLAGS, and to replace references to host directories
with staging_dir directories.

This results in RPATH being added as it needs to be, and results in a working
version of dovecot+pigeonhole.

NB: I've also touched package version of pigeonhole as this change in dovecot
results in (needed) binary changes for pigeonhole.

Signed-off-by: Daniel F. Dickinson <cshored@thecshore.com>

mail/dovecot/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=dovecot
 PKG_VERSION:=2.3.2.1
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://www.dovecot.org/releases/2.3

mail/dovecot/patches/050-fix-dovecot-config-for-cross-compile.patch

@@ -0,0 +1,58 @@
+pigeonhole: Fix managesieve-login needs libdovecot-login
+
+When trying to use managesieve my MUA complained sieve wasn't supported.
+On investigation dovecot logs the following could be seen:
+
+    Aug 16 00:28:44 managesieve-login: Fatal: master:
+      service(managesieve-login): child 1430 returned error 127
+    Aug 16 00:31:32 managesieve-login: Error: Error loading shared
+      library libdovecot-login.so.0: No such file or directory
+      (needed by /usr/lib/dovecot/managesieve-login)
+    Aug 16 00:31:32 managesieve-login: Error: Error loading
+      shared library libdovecot.so.0: No such file or directory
+      (needed by /usr/lib/dovecot/managesieve-login)
+    Aug 16 00:31:32 managesieve-login: Error: Error relocating
+      /usr/lib/dovecot/managesieve-login: net_ip2addr: symbol not found
+
+The issue (verified with readelf on non-working build and build with my fix)
+is that there is no RPATH information in the pigeonhole binaries (like
+managesieve-login).
+
+The dovecot-config that is 'installed' in the staging dir
+assumes that plugins will be built on the same host as the installed files.
+The 'installed' dovecot-config (partial) looks like:
+
+LIBDOVECOT='-L/usr/lib/dovecot -ldovecot'
+LIBDOVECOT_LOGIN='-ldovecot-login -L/home/user/Build/openwrt/openwrt-ath79/staging_dir/target-mips_24kc_musl/usr/lib -lssl -lcrypto'
+LIBDOVECOT_SQL=-ldovecot-sql
+LIBDOVECOT_COMPRESS=-ldovecot-compression
+LIBDOVECOT_LDA=-ldovecot-lda
+LIBDOVECOT_STORAGE='-ldovecot-storage '
+LIBDOVECOT_DSYNC=-ldovecot-dsync
+LIBDOVECOT_LIBFTS=-ldovecot-fts
+
+This patch modifed dovecot-config that gets installed on the assumption
+that users of libdovecot will also be cross-compiled (a safe bet).
+Index: dovecot-2.3.2.1/Makefile.am
+===================================================================
+--- dovecot-2.3.2.1.orig/Makefile.am
++++ dovecot-2.3.2.1/Makefile.am
+@@ -73,7 +73,7 @@ install-exec-hook:
+ 	grep -v '^LIBDOVECOT_.*_INCLUDE' dovecot-config | \
+ 	grep -v '^LIBDOVECOT.*_DEPS' | sed \
+ 	-e "s|^\(DOVECOT_INSTALLED\)=.*$$|\1=yes|" \
+-	-e "s|^\(LIBDOVECOT\)=.*$$|\1='-L$(pkglibdir) -ldovecot'|" \
++	-e "s|^\(LIBDOVECOT\)=.*$$|\1='-L$(STAGING_DIR)$(pkglibdir) -ldovecot'|" \
+ 	-e "s|^\(LIBDOVECOT_LOGIN\)=.*$$|\1='-ldovecot-login $(SSL_LIBS)'|" \
+ 	-e "s|^\(LIBDOVECOT_SQL\)=.*$$|\1=-ldovecot-sql|" \
+ 	-e "s|^\(LIBDOVECOT_COMPRESS\)=.*$$|\1=-ldovecot-compression|" \
+@@ -81,7 +81,8 @@ install-exec-hook:
+ 	-e "s|^\(LIBDOVECOT_LDA\)=.*$$|\1=-ldovecot-lda|" \
+ 	-e "s|^\(LIBDOVECOT_LIBFTS\)=.*$$|\1=-ldovecot-fts|" \
+ 	-e "s|^\(LIBDOVECOT_STORAGE\)=.*$$|\1='-ldovecot-storage $(LINKED_STORAGE_LDADD)'|" \
+-	-e "s|^\(LIBDOVECOT_INCLUDE\)=.*$$|\1=-I$(pkgincludedir)|" \
++	-e "s|^\(LIBDOVECOT_INCLUDE\)=.*$$|\1=-I$(STAGING_DIR)$(pkgincludedir)|" \
++	-e "s|^\(DOVECOT_BINARY_LDFLAGS=\".*\)\"$$|\1 -Wl,-rpath -Wl,$(pkglibdir)\"|" \
+ 	> $(DESTDIR)$(pkglibdir)/dovecot-config
+ 
+ uninstall-hook:

mail/pigeonhole/Makefile

@@ -11,7 +11,7 @@ PKG_NAME:=dovecot-pigeonhole
 PKG_VERSION_PLUGIN:=0.5.2
 PKG_VERSION_DOVECOT:=$(shell make --no-print-directory -C ../dovecot/ val.PKG_VERSION V=s)
 PKG_VERSION:=$(PKG_VERSION_DOVECOT)-$(PKG_VERSION_PLUGIN)
-PKG_RELEASE:=3
+PKG_RELEASE:=4
 
 DOVECOT_VERSION:=2.3