diff --git a/configure b/configure
index 3ab209b..7a2a95d 100755
--- a/configure
+++ b/configure
@@ -612,7 +612,6 @@ PACKAGE_STRING=''
 PACKAGE_BUGREPORT=''
 PACKAGE_URL=''
 
-ac_unique_file="src/lwgeom.cpp"
 # Factoring default headers for most tests.
 ac_includes_default="\
 #include <stddef.h>
@@ -652,7 +651,6 @@ OBJECTS
 GEOS_LIBS
 PKG_CPPFLAGS
 GEOS_CONFIG
-POSTGIS_PROJ_VERSION
 PROJ_LIBS
 OBJEXT
 EXEEXT
@@ -2275,7 +2273,9 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
-# AC_CONFIG_HEADERS([src/postgis_config.h:src/postgis_config.h.in])
+ac_config_headers="$ac_config_headers src/postgis_config.h:src/postgis_config.h.in"
+
+ac_config_files="$ac_config_files src/Makevars"
 
 
 : ${R_HOME=`R RHOME`}
@@ -3751,8 +3751,10 @@ POSTGIS_PROJ_VERSION="${PROJ_VERSION_MAJOR}${PROJ_VERSION_MINOR}"
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: POSTGIS_PROJ_VERSION: ${POSTGIS_PROJ_VERSION}" >&5
 printf "%s\n" "$as_me: POSTGIS_PROJ_VERSION: ${POSTGIS_PROJ_VERSION}" >&6;}
 #AC_SUBST([POSTGIS_PROJ_VERSION],["${PROJV12}"])
-#AC_DEFINE_UNQUOTED([POSTGIS_PROJ_VERSION], [$POSTGIS_PROJ_VERSION], [PROJ library version])
 
+printf "%s\n" "#define POSTGIS_PROJ_VERSION \"$POSTGIS_PROJ_VERSION\"" >>confdefs.h
+
+#AC_SUBST(POSTGIS_PROJ_VERSION)
 PKG_CPPFLAGS="${PKG_CPPFLAGS} -DPOSTGIS_PROJ_VERSION=${POSTGIS_PROJ_VERSION}"
 if test ${POSTGIS_PROJ_VERSION} -lt 60 ; then
   PKG_CPPFLAGS="${PKG_CPPFLAGS} -DACCEPT_USE_OF_DEPRECATED_PROJ_API_H"
@@ -4265,8 +4267,6 @@ printf "%s\n" "$as_me: Package CPP flags: ${PKG_CPPFLAGS}" >&6;}
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: Package LIBS: ${LIBS}" >&5
 printf "%s\n" "$as_me: Package LIBS: ${LIBS}" >&6;}
 
-ac_config_files="$ac_config_files src/Makevars src/postgis_config.h"
-
 cat >confcache <<\_ACEOF
 # This file is a shell script that caches the results of configure
 # tests run on this system so they can be shared between configure
@@ -4357,43 +4357,7 @@ test "x$prefix" = xNONE && prefix=$ac_default_prefix
 # Let make expand exec_prefix.
 test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
 
-# Transform confdefs.h into DEFS.
-# Protect against shell expansion while executing Makefile rules.
-# Protect against Makefile macro expansion.
-#
-# If the first sed substitution is executed (which looks for macros that
-# take arguments), then branch to the quote section.  Otherwise,
-# look for a macro that doesn't take arguments.
-ac_script='
-:mline
-/\\$/{
- N
- s,\\\n,,
- b mline
-}
-t clear
-:clear
-s/^[	 ]*#[	 ]*define[	 ][	 ]*\([^	 (][^	 (]*([^)]*)\)[	 ]*\(.*\)/-D\1=\2/g
-t quote
-s/^[	 ]*#[	 ]*define[	 ][	 ]*\([^	 ][^	 ]*\)[	 ]*\(.*\)/-D\1=\2/g
-t quote
-b any
-:quote
-s/[	 `~#$^&*(){}\\|;'\''"<>?]/\\&/g
-s/\[/\\&/g
-s/\]/\\&/g
-s/\$/$$/g
-H
-:any
-${
-	g
-	s/^\n//
-	s/\n/ /g
-	p
-}
-'
-DEFS=`sed -n "$ac_script" confdefs.h`
-
+DEFS=-DHAVE_CONFIG_H
 
 ac_libobjs=
 ac_ltlibobjs=
@@ -4821,11 +4785,15 @@ case $ac_config_files in *"
 "*) set x $ac_config_files; shift; ac_config_files=$*;;
 esac
 
+case $ac_config_headers in *"
+"*) set x $ac_config_headers; shift; ac_config_headers=$*;;
+esac
 
 
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 # Files that config.status was made for.
 config_files="$ac_config_files"
+config_headers="$ac_config_headers"
 
 _ACEOF
 
@@ -4846,10 +4814,15 @@ Usage: $0 [OPTION]... [TAG]...
       --recheck    update $as_me by reconfiguring in the same conditions
       --file=FILE[:TEMPLATE]
                    instantiate the configuration file FILE
+      --header=FILE[:TEMPLATE]
+                   instantiate the configuration header FILE
 
 Configuration files:
 $config_files
 
+Configuration headers:
+$config_headers
+
 Report bugs to the package provider."
 
 _ACEOF
@@ -4912,7 +4885,18 @@ do
     esac
     as_fn_append CONFIG_FILES " '$ac_optarg'"
     ac_need_defaults=false;;
-  --he | --h |  --help | --hel | -h )
+  --header | --heade | --head | --hea )
+    $ac_shift
+    case $ac_optarg in
+    *\'*) ac_optarg=`printf "%s\n" "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    as_fn_append CONFIG_HEADERS " '$ac_optarg'"
+    ac_need_defaults=false;;
+  --he | --h)
+    # Conflict between --help and --header
+    as_fn_error $? "ambiguous option: \`$1'
+Try \`$0 --help' for more information.";;
+  --help | --hel | -h )
     printf "%s\n" "$ac_cs_usage"; exit ;;
   -q | -quiet | --quiet | --quie | --qui | --qu | --q \
   | -silent | --silent | --silen | --sile | --sil | --si | --s)
@@ -4968,8 +4952,8 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 for ac_config_target in $ac_config_targets
 do
   case $ac_config_target in
+    "src/postgis_config.h") CONFIG_HEADERS="$CONFIG_HEADERS src/postgis_config.h:src/postgis_config.h.in" ;;
     "src/Makevars") CONFIG_FILES="$CONFIG_FILES src/Makevars" ;;
-    "src/postgis_config.h") CONFIG_FILES="$CONFIG_FILES src/postgis_config.h" ;;
 
   *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
   esac
@@ -4982,6 +4966,7 @@ done
 # bizarre bug on SunOS 4.1.3.
 if $ac_need_defaults; then
   test ${CONFIG_FILES+y} || CONFIG_FILES=$config_files
+  test ${CONFIG_HEADERS+y} || CONFIG_HEADERS=$config_headers
 fi
 
 # Have a temporary directory for convenience.  Make it in the build tree
@@ -5169,8 +5154,116 @@ fi
 cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 fi # test -n "$CONFIG_FILES"
 
+# Set up the scripts for CONFIG_HEADERS section.
+# No need to generate them if there are no CONFIG_HEADERS.
+# This happens for instance with `./config.status Makefile'.
+if test -n "$CONFIG_HEADERS"; then
+cat >"$ac_tmp/defines.awk" <<\_ACAWK ||
+BEGIN {
+_ACEOF
+
+# Transform confdefs.h into an awk script `defines.awk', embedded as
+# here-document in config.status, that substitutes the proper values into
+# config.h.in to produce config.h.
+
+# Create a delimiter string that does not exist in confdefs.h, to ease
+# handling of long lines.
+ac_delim='%!_!# '
+for ac_last_try in false false :; do
+  ac_tt=`sed -n "/$ac_delim/p" confdefs.h`
+  if test -z "$ac_tt"; then
+    break
+  elif $ac_last_try; then
+    as_fn_error $? "could not make $CONFIG_HEADERS" "$LINENO" 5
+  else
+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+  fi
+done
+
+# For the awk script, D is an array of macro values keyed by name,
+# likewise P contains macro parameters if any.  Preserve backslash
+# newline sequences.
 
-eval set X "  :F $CONFIG_FILES      "
+ac_word_re=[_$as_cr_Letters][_$as_cr_alnum]*
+sed -n '
+s/.\{148\}/&'"$ac_delim"'/g
+t rset
+:rset
+s/^[	 ]*#[	 ]*define[	 ][	 ]*/ /
+t def
+d
+:def
+s/\\$//
+t bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[	 ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3"/p
+s/^ \('"$ac_word_re"'\)[	 ]*\(.*\)/D["\1"]=" \2"/p
+d
+:bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[	 ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3\\\\\\n"\\/p
+t cont
+s/^ \('"$ac_word_re"'\)[	 ]*\(.*\)/D["\1"]=" \2\\\\\\n"\\/p
+t cont
+d
+:cont
+n
+s/.\{148\}/&'"$ac_delim"'/g
+t clear
+:clear
+s/\\$//
+t bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/"/p
+d
+:bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/\\\\\\n"\\/p
+b cont
+' <confdefs.h | sed '
+s/'"$ac_delim"'/"\\\
+"/g' >>$CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+  for (key in D) D_is_set[key] = 1
+  FS = ""
+}
+/^[\t ]*#[\t ]*(define|undef)[\t ]+$ac_word_re([\t (]|\$)/ {
+  line = \$ 0
+  split(line, arg, " ")
+  if (arg[1] == "#") {
+    defundef = arg[2]
+    mac1 = arg[3]
+  } else {
+    defundef = substr(arg[1], 2)
+    mac1 = arg[2]
+  }
+  split(mac1, mac2, "(") #)
+  macro = mac2[1]
+  prefix = substr(line, 1, index(line, defundef) - 1)
+  if (D_is_set[macro]) {
+    # Preserve the white space surrounding the "#".
+    print prefix "define", macro P[macro] D[macro]
+    next
+  } else {
+    # Replace #undef with comments.  This is necessary, for example,
+    # in the case of _POSIX_SOURCE, which is predefined and required
+    # on some systems where configure will not decide to define it.
+    if (defundef == "undef") {
+      print "/*", prefix defundef, macro, "*/"
+      next
+    }
+  }
+}
+{ print }
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+  as_fn_error $? "could not setup config headers machinery" "$LINENO" 5
+fi # test -n "$CONFIG_HEADERS"
+
+
+eval set X "  :F $CONFIG_FILES  :H $CONFIG_HEADERS    "
 shift
 for ac_tag
 do
@@ -5378,7 +5471,30 @@ which seems to be undefined.  Please make sure it is defined" >&2;}
   esac \
   || as_fn_error $? "could not create $ac_file" "$LINENO" 5
  ;;
-
+  :H)
+  #
+  # CONFIG_HEADER
+  #
+  if test x"$ac_file" != x-; then
+    {
+      printf "%s\n" "/* $configure_input  */" >&1 \
+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs"
+    } >"$ac_tmp/config.h" \
+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+    if diff "$ac_file" "$ac_tmp/config.h" >/dev/null 2>&1; then
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
+printf "%s\n" "$as_me: $ac_file is unchanged" >&6;}
+    else
+      rm -f "$ac_file"
+      mv "$ac_tmp/config.h" "$ac_file" \
+	|| as_fn_error $? "could not create $ac_file" "$LINENO" 5
+    fi
+  else
+    printf "%s\n" "/* $configure_input  */" >&1 \
+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs" \
+      || as_fn_error $? "could not create -" "$LINENO" 5
+  fi
+ ;;
 
 
   esac
diff --git a/configure.ac b/configure.ac
index 0906f8b..fe2a4bf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,8 +1,8 @@
 dnl Process this file with autoconf to produce a configure script.
 dnl GDAL stuff largely copied from rgdal, (c) Roger Bivand
 AC_INIT
-# AC_CONFIG_HEADERS([src/postgis_config.h:src/postgis_config.h.in])
-AC_CONFIG_SRCDIR([src/lwgeom.cpp])
+AC_CONFIG_HEADERS([src/postgis_config.h:src/postgis_config.h.in])
+AC_CONFIG_FILES(src/Makevars)
 
 : ${R_HOME=`R RHOME`}
 if test -z "${R_HOME}"; then
@@ -357,8 +357,8 @@ PROJ_VERSION_MINOR=`echo $proj_version | cut -d "." -f 2`
 POSTGIS_PROJ_VERSION="${PROJ_VERSION_MAJOR}${PROJ_VERSION_MINOR}"
 AC_MSG_NOTICE([POSTGIS_PROJ_VERSION: ${POSTGIS_PROJ_VERSION}])
 #AC_SUBST([POSTGIS_PROJ_VERSION],["${PROJV12}"])
-#AC_DEFINE_UNQUOTED([POSTGIS_PROJ_VERSION], [$POSTGIS_PROJ_VERSION], [PROJ library version])
-AC_SUBST(POSTGIS_PROJ_VERSION)
+AC_DEFINE_UNQUOTED([POSTGIS_PROJ_VERSION], ["$POSTGIS_PROJ_VERSION"], [PROJ library version])
+#AC_SUBST(POSTGIS_PROJ_VERSION)
 PKG_CPPFLAGS="${PKG_CPPFLAGS} -DPOSTGIS_PROJ_VERSION=${POSTGIS_PROJ_VERSION}"
 if test ${POSTGIS_PROJ_VERSION} -lt 60 ; then
   PKG_CPPFLAGS="${PKG_CPPFLAGS} -DACCEPT_USE_OF_DEPRECATED_PROJ_API_H"
@@ -518,6 +518,4 @@ AC_SUBST([PKG_CPPFLAGS], ["${CPPFLAGS} ${PKG_CPPFLAGS} -I./liblwgeom -DHAVE_LIBL
 AC_MSG_NOTICE([Package CPP flags: ${PKG_CPPFLAGS}])
 AC_MSG_NOTICE([Package LIBS: ${LIBS}])
 
-AC_CONFIG_FILES(src/Makevars
-				src/postgis_config.h)
 AC_OUTPUT
diff --git a/man/perimeter-deprecated.Rd b/man/perimeter-deprecated.Rd
index a3e0dff..9fa5e1e 100644
--- a/man/perimeter-deprecated.Rd
+++ b/man/perimeter-deprecated.Rd
@@ -1,5 +1,5 @@
 % Generated by roxygen2: do not edit by hand
-% Please edit documentation in R/deprec.R
+% Please edit documentation in R/perimeter.R
 \name{perimeter-deprecated}
 \alias{perimeter-deprecated}
 \alias{st_perimeter}
diff --git a/src/postgis_config.h b/src/postgis_config.h
index 63d8968..3a50426 100644
--- a/src/postgis_config.h
+++ b/src/postgis_config.h
@@ -1,3 +1,4 @@
+/* src/postgis_config.h.  Generated from postgis_config.h.in by configure.  */
 /* postgis_config.h.  Generated from postgis_config.h.in by configure.  */
 #ifndef POSTGIS_CONFIG_H
 #define POSTGIS_CONFIG_H 1
@@ -121,7 +122,7 @@
 #define POSTGIS_PGSQL_VERSION 100
 
 /* PROJ library version */
-#define POSTGIS_PROJ_VERSION 93
+/* #undef POSTGIS_PROJ_VERSION */
 
 /* PostGIS Raster build date */
 /* #undef POSTGIS_RASTER_BUILD_DATE */
diff --git a/src/postgis_config.h.in b/src/postgis_config.h.in
index 2c95244..733afe6 100644
--- a/src/postgis_config.h.in
+++ b/src/postgis_config.h.in
@@ -22,7 +22,7 @@
 #define HAVE_GETTEXT 1
 
 /* Define if the build is big endian */
-/* #undef WORDS_BIGENDIAN */
+#undef WORDS_BIGENDIAN
 
 /* Define if you have the iconv() function and it works. */
 #define HAVE_ICONV 1
@@ -121,7 +121,7 @@
 #define POSTGIS_PGSQL_VERSION 100
 
 /* PROJ library version */
-#define POSTGIS_PROJ_VERSION @POSTGIS_PROJ_VERSION@
+/* #undef POSTGIS_PROJ_VERSION */
 
 /* PostGIS Raster build date */
 /* #undef POSTGIS_RASTER_BUILD_DATE */