fix man page, pkg-config init in configure

GNUmakefile.in

@@ -35,7 +35,7 @@ LIBS				= @LIBS@ \
 					  @BOOST_PROGRAM_OPTIONS_LIB@ \
 					  @BOOST_DATE_TIME_LIB@
 
-prefix				= @prefix@
+prefix				= $(DESTDIR)@prefix@
 exec_prefix			= @exec_prefix@
 bindir				= @bindir@
 datarootdir			= @datarootdir@
@@ -127,7 +127,7 @@ else
 src/revision.hpp:
 	@ echo 'const char kRevision[] = R"(' > $@
 	@ echo dssp-version: $(VERSION) >> $@
-	@ echo Date:   $$(date --iso-8601) >> $@
+	@ echo Date:   $$(date --utc --date=@$(SOURCE_DATE_EPOCH) --iso-8601) >> $@
 	@ echo ')";' >> $@
 
 endif

configure.ac

@@ -18,20 +18,34 @@ AC_CONFIG_HEADERS([src/config.hpp])
 AC_PREFIX_DEFAULT(/usr/local)
 
 AC_PROG_INSTALL
+PKG_PROG_PKG_CONFIG
 
 AC_ARG_VAR([DEBUG], [Build a debug version of the application])
 
 AC_ARG_VAR([MRC], [Specify a location for the mrc executable])
 
-dnl We would like to use mrc
+USE_RSRC=0
+
 if test "x$MRC" = "x"; then
 	AC_PATH_PROG([MRC], [mrc])
 fi
 
 if test "x$MRC" = "x"; then
-	AC_MSG_ERROR([mrc not found, the application will be built without resources])
+	AC_MSG_WARN([The mrc application was not found, not using resources.])
+else
+	AC_ARG_ENABLE(
+		resources,
+		[AS_HELP_STRING([--disable-resources], [Do not use mrc to store data in resources])])
+
+	AS_IF([test "x$enable_resources" != "xno" ], [
+		USE_RSRC=1
+	])
 fi
 
+AC_SUBST([USE_RSRC], [$USE_RSRC])
+
+AC_DEFINE_UNQUOTED([USE_RSRC], [$USE_RSRC], [Use mrc to store resources])
+
 dnl revision numbering is something used internally at the NKI
 AC_ARG_ENABLE(
 	revision,
@@ -95,7 +109,6 @@ AC_ARG_WITH([cif++],
 AC_SUBST([CIFPP_RSRC], [$CIFPP_RSRC])
 
 AS_IF([test "x$CIFPP_LIBS" = "x"], [
-	AC_PATH_PROG([PKG_CONFIG], [pkg-config])
 	if test -x "$PKG_CONFIG"
 	then
 		AX_PKG_CHECK_MODULES([CIFPP], [libcifpp], [], [], [AC_MSG_ERROR([the required package libcifpp is not installed])])

mkdssp.1

@@ -21,7 +21,7 @@ Since version 4.0 the mkdssp program also assigns PP helices.
 The input file can be either mmCIF or PDB format and the file may be
 gzip or bzip2 compressed.
 .sp
-The output is optional, if ommited the output is written to \fIstdout\fR. If
+The output is optional, if omitted the output is written to \fIstdout\fR. If
 the name of the output file ends with either \fI.gz\fR or \fI.bz2\fR the
 output is compressed accordingly.
 .TP
@@ -57,7 +57,9 @@ I	HELX_RH_PI_P	Helix_5
 P	HELX_LH_PP_P	Helix_PPII
 T	TURN_TY1_P	Turn
 S	BEND	Bend
-' '	OTHER	Loop
+T{
+\(aq \(aq (space)
+T}	OTHER	Loop
 .TE
 .SH BUGS
 The mmCIF format currently lacks a lot of information that was available