add configure option to disable building the indexer, and avoid building the recoll lib if nothing needs it

src/Makefile.am

@@ -59,7 +59,10 @@ else
 endif
 
 librcldir = $(libdir)/recoll
-librcl_LTLIBRARIES = librecoll.la
+librcl_LTLIBRARIES =
+if MAKE_RECOLL_LIB
+librcl_LTLIBRARIES += librecoll.la
+endif
 
 librecoll_la_SOURCES = \
 aspell/rclaspell.cpp \
@@ -310,7 +313,10 @@ PicStatic: $(librecoll_la_OBJECTS)
 	$(LIBTOOL) --tag=LD --mode=link gcc -g -O -o librecoll.la \
 		$(librecoll_la_OBJECTS)
 
-bin_PROGRAMS = recollindex
+bin_PROGRAMS =
+if MAKEINDEXER
+    bin_PROGRAMS += recollindex
+endif
 if MAKECMDLINE
     bin_PROGRAMS += recollq
 endif
@@ -628,13 +634,13 @@ install-exec-local:: rclpychm-install
 clean-local:: rclpychm-clean
 rclpychm:
 	(cd python/pychm; set -x; \
-        for v in 2 3;do \
+        for v in 3;do \
         test -n "`which python$${v}`" && python$${v} setup.py build;\
         done \
         )
 rclpychm-install:
 	(cd python/pychm; set -x; \
-        for v in 2 3;do test -n "`which python$${v}`" && \
+        for v in 3;do test -n "`which python$${v}`" && \
         python$${v} setup.py install \
          --prefix=${prefix} --root=$${DESTDIR:-/} $(OPTSFORPYTHON); \
         done \
@@ -787,7 +793,7 @@ doc/user/usermanual.html: doc/user/usermanual.xml
 endif
 
 dist_man1_MANS = doc/man/recoll.1 doc/man/recollq.1 \
-               doc/man/recollindex.1 doc/man/xadump.1
+               doc/man/recollindex.1 doc/man/xadump.1 doc/man/rclgrep.1
 dist_man5_MANS = doc/man/recoll.conf.5
 
 dist-hook:

src/configure.ac

@@ -320,6 +320,11 @@ XAPIANCXXFLAGS=`$XAPIAN_CONFIG --cxxflags`
 
 PKG_CHECK_MODULES([XSLT], [libxslt], [], AC_MSG_ERROR([libxslt]))
 
+AC_ARG_ENABLE(indexer, 
+    AS_HELP_STRING([--disable-indexer],[Disable building the recollindex indexer.]),
+        enableINDEXER=$enableval, enableINDEXER="yes")
+AM_CONDITIONAL(MAKEINDEXER, [test X$enableINDEXER = Xyes])
+
 AC_ARG_ENABLE(xadump, 
     AS_HELP_STRING([--enable-xadump],[Enable building the xadump low level Xapian access program.]),
         enableXADUMP=$enableval, enableXADUMP="no")
@@ -511,6 +516,10 @@ fi
 #echo X_CFLAGS "'$X_CFLAGS'" X_PRE_LIBS "'$X_PRE_LIBS'" X_LIBS \
 #      "'$X_LIBS'" X_LIBX11 "'$X_LIBX11'" X_EXTRA_LIBS "'$X_EXTRA_LIBS'"
 
+
+AM_CONDITIONAL([MAKE_RECOLL_LIB], [test X$buildtestmains = Xno -a X$pythonEnabled = Xno
+  -a X$enableINDEXER = Xno -a X$enableXADUMP = Xno -a X$enableQT = Xno -a X$enableRECOLLQ = Xno])
+   
 # For communicating the value of RECOLL_DATADIR to non-make-based
 # subpackages like python-recoll, we have to expand prefix in here, because
 # things like "datadir = ${prefix}/share" (which is what we'd get by

src/doc/man/rclgrep.1

@@ -0,0 +1,12 @@
+.TH RCLGREP 1 "20 September 2022"
+.SH NAME
+rclgrep \- grep-like program based on the recoll data extraction functions
+.SH SYNOPSIS
+.B rclgrep
+[
+.B \--config
+<configdir>
+]
+
+.SH DESCRIPTION
+Some bla bla