Make scripts like nroff.sh and neqn.sh portable across various

(Unix-like) shell implementations from Cygwin, MSYS, etc., which use
non-POSIX path separators.  The idea is to extend those scripts to
decide at run-time (of the script) which path separator to use.

* arch/misc/Makefile.sub: New file.
* arch/misc/shdeps.sh: New file, generating OS dependency fixups.
This script handles @GROFF_BIN_PATH_SETUP@, replacing it with
a proper definition of the variable `GROFF_RUNTIME'.

* Makefile.in (SH_DEPS_SED_SCRIPT): New variable.
(MDEFINES): Add SH_DEPS_SED_SCRIPT.
(PROGDEPDIRS): New variable.
`FORCE' it.
(PROGDIRS): Add PROGDEPDIRS.

* src/preproc/eqn/Makefile.sub (neqn): Call SH_DEPS_SED_SCRIPT.
Don't substitute @SEP@ and @BINDIR@.
* src/preproc/eqn/neqn.sh: Use @GROFF_BIN_PATH_SETUP@.
(PATH): Use GROFF_RUNTIME.

* src/roff/nroff/Makefile.sub (nroff): Call SH_DEPS_SED_SCRIPT.
Don't substitute @SEP@ and @BINDIR@.
* src/roff/nroff/nroff.sh: Use @GROFF_BIN_PATH_SETUP@.
(PATH): Use GROFF_RUNTIME.

4 files changed, 14 insertions, 12 deletions

diff --git a/src/preproc/eqn/Makefile.sub b/src/preproc/eqn/Makefile.sub
index 7312343a..c1f59727 100644
--- a/src/preproc/eqn/Makefile.sub
+++ b/src/preproc/eqn/Makefile.sub
@@ -44,11 +44,10 @@ CLEANADD=neqn
 
 all: neqn
 
-neqn: neqn.sh
+neqn: neqn.sh $(SH_DEPS_SED_SCRIPT)
 	-rm -f $@
 	sed -e 's/@g@/$(g)/g' \
-	-e 's|@BINDIR@|$(bindir)|g' \
-	-e 's|@SEP@|$(SH_SEP)|g' \
+	-f $(SH_DEPS_SED_SCRIPT) \
 	-e $(SH_SCRIPT_SED_CMD) $(srcdir)/neqn.sh >$@
 	chmod +x $@
 
diff --git a/src/preproc/eqn/neqn.sh b/src/preproc/eqn/neqn.sh
index 43fe1e85..f2b5fdfc 100644
--- a/src/preproc/eqn/neqn.sh
+++ b/src/preproc/eqn/neqn.sh
@@ -2,8 +2,8 @@
 # Provision of this shell script should not be taken to imply that use of
 # GNU eqn with groff -Tascii|-Tlatin1|-Tutf8|-Tcp1047 is supported.
 
-: ${GROFF_BIN_PATH=@BINDIR@}
-PATH=$GROFF_BIN_PATH@SEP@$PATH
+@GROFF_BIN_PATH_SETUP@
+PATH="$GROFF_RUNTIME$PATH"
 export PATH
 exec @g@eqn -Tascii ${1+"$@"}
 
diff --git a/src/roff/nroff/Makefile.sub b/src/roff/nroff/Makefile.sub
index abd6d4a5..ffd2ccd8 100644
--- a/src/roff/nroff/Makefile.sub
+++ b/src/roff/nroff/Makefile.sub
@@ -4,10 +4,9 @@ CLEANADD=nroff
 
 all: nroff
 
-nroff: nroff.sh
+nroff: nroff.sh $(SH_DEPS_SED_SCRIPT)
 	rm -f $@
-	sed -e "s|@BINDIR@|$(bindir)|g" \
-	-e "s|@SEP@|$(SH_SEP)|g" \
+	sed -f $(SH_DEPS_SED_SCRIPT) \
 	-e $(SH_SCRIPT_SED_CMD) \
 	-e "s|@VERSION@|$(version)$(revision)|" $(srcdir)/nroff.sh >$@
 	chmod +x $@
diff --git a/src/roff/nroff/nroff.sh b/src/roff/nroff/nroff.sh
index 9c9cc768..4c5c00bd 100644
--- a/src/roff/nroff/nroff.sh
+++ b/src/roff/nroff/nroff.sh
@@ -5,7 +5,7 @@ prog="$0"
 # Default device.
 # First try the "locale charmap" command, because it's most reliable.
 # On systems where it doesn't exist, look at the environment variables.
-case "`locale charmap 2>/dev/null`" in
+case "`exec 2>/dev/null ; locale charmap`" in
   UTF-8)
     T=-Tutf8 ;;
   ISO-8859-1)
@@ -84,11 +84,15 @@ for i
   shift
 done
 
+# Set up the `GROFF_BIN_PATH' variable
+# to be exported in the current `GROFF_RUNTIME' environment.
+
+@GROFF_BIN_PATH_SETUP@
+export GROFF_BIN_PATH
+
 # This shell script is intended for use with man, so warnings are
 # probably not wanted.  Also load nroff-style character definitions.
 
-: ${GROFF_BIN_PATH=@BINDIR@}
-export GROFF_BIN_PATH
-PATH=$GROFF_BIN_PATH@SEP@$PATH groff -mtty-char $T $opts ${1+"$@"}
+PATH="$GROFF_RUNTIME$PATH" groff -mtty-char $T $opts ${1+"$@"}
 
 # eof