MSGHDR updates

[openldap] / build / mkdep

diff --git a/build/mkdep b/build/mkdep
index 6620fbfe8f940ae7fe07595cb840e59375194820..506126e3a71799117dcf94c34b85b75f4bff92b2 100755 (executable)
--- a/build/mkdep
+++ b/build/mkdep
@@ -1,5 +1,10 @@
-#!/bin/sh -
+#! /bin/sh -
+# $OpenLDAP$
+## Copyright 1998-2003 The OpenLDAP Foundation
+## COPYING RESTRICTIONS APPLY.  See COPYRIGHT File in top level directory
+## of this package for details.
 #
+# Portions
 # Copyright (c) 1987 Regents of the University of California.
 # All rights reserved.
 #
@@ -25,10 +30,15 @@ set -e                              # exit immediately if any errors occur
 
 MAKE=Makefile                  # default makefile name is "Makefile"
 NOSLASH="no"                   # by default, / dependencies are included
-CC=${CC-cc}                            # default compiler is cc
 SRCDIR=""
 SED=cat
 
+: ${CC=cc}                                     # use cc by default
+
+# We generally set these via the command line options
+: ${MKDEP_CC=$CC}                      # select default compiler to generate dependencies
+: ${MKDEP_CFLAGS="-M"} # cc -M usually produces dependencies
+
 while :
        do case "$1" in
                # the -s flag removes dependencies to files that begin with /
@@ -46,9 +56,15 @@ while :
                        SRCDIR=$2
                        shift; shift ;;
 
-               # -c allows you to select a compiler to use (default is cc)
+               # -c allows you to override the compiler used to generate dependencies
                -c)
-                       CC=$2
+                       MKDEP_CC=$2
+                       shift; shift ;;
+
+               # -m allows you to override the compiler flags used to generate
+               # dependencies.
+               -m)
+                       MKDEP_CFLAGS=$2
                        shift; shift ;;
 
                # the -p flag produces "program: program.c" style dependencies
@@ -57,7 +73,6 @@ while :
                        SED='sed -e s;\.o;;'
                        shift ;;
 
-
                # the -l flag produces libtool compatible dependencies
                -l)
                        SED='sed -e s;\.o:;.lo:;'
@@ -70,19 +85,19 @@ while :
        esac
 done
 
-if [ $# = 0 ] ; then
-       echo 'usage: mkdep [-p] [-s] [-c cc] [-f makefile] [-d srcdir] [flags] file ...'
+if test $# = 0 ; then
+       echo 'usage: mkdep [-p] [-s] [-c cc] [-m flags] [-f makefile] [-d srcdir] [cppflags] file ...'
        exit 1
 fi
 
-if [ ! -w $MAKE ]; then
+if test ! -w $MAKE ; then
        echo "mkdep: no writeable file \"$MAKE\""
        exit 1
 fi
 
 TMP=/tmp/mkdep$$
 
-trap 'rm -f $TMP ; exit 1' 1 2 3 13 15
+trap 'rm -f $TMP.sed $TMP ; exit 1' 1 2 3 13 15
 
 cp $MAKE ${MAKE}.bak
 
@@ -94,13 +109,11 @@ cat << _EOF_ >> $TMP
 
 _EOF_
 
-# If your compiler doesn't have -M, add it.  If you can't, the next two
-# lines will try and replace the "cc -M".  The real problem is that this
-# hack can't deal with anything that requires a search path, and doesn't
-# even try for anything using bracket (<>) syntax.
-#
-# egrep '^#include[    ]*".*"' /dev/null $* |
-# sed -e 's/:[^"]*"\([^"]*\)".*/: \1/' -e 's/\.c/.o/' |
+# If your compiler doesn't have -M, you may be able to use -E instead.
+# The preprocessor must generate lines of the form
+#   #.* [0-9]* "dependent file" .*
+# This script will parse out the "dependent file"s to generate the
+# dependency list.
 
 if test "x$SRCDIR" = "x" ; then
        files=$*
@@ -115,40 +128,80 @@ else
                        files="$files $i"
                fi
        done
-       CC="$CC -I$SRCDIR"
+
+       MKDEP_CFLAGS="$MKDEP_CFLAGS -I$SRCDIR"
 fi
 
 cat << _EOF_ >> $TMP
 
 #
 # files: $*
-# command: $CC -M $files
+# command: $MKDEP_CC $MKDEP_CFLAGS $files
 #
 
 _EOF_
 
-$CC -M $files | \
-       sed -e 's; \./; ;g' | \
-       $SED | \
+case $MKDEP_CFLAGS in
+# Using regular preprocessor output
+       -E*)
+FLAGS=""
+FILES=""
+for i in $files; do
+       case $i in
+       -*)     FLAGS="$FLAGS $i" ;;
+       *)      FILES="$FILES $i" ;;
+       esac
+done
+for i in $FILES; do
+       $MKDEP_CC $MKDEP_CFLAGS $FLAGS $i | egrep '^#.*"' > $TMP.sed
+awk '
+BEGIN {
+       file = "'$i'"
+       n = split(file, parts, "/")
+       filenm = substr(parts[n], 0, length(parts[n])-1) "o"
+}
+{
+       dep = split($3, parts, "\"")
+       dep = parts[2]
+       if (dep ~ "^\./.*") dep = substr(dep, 3, length(dep)-2)
+       if (( noslash == "yes") && (dep ~ /^\// )) continue
+       if (deps[dep] == 0) printf "%s: %s\n", filenm, dep
+       deps[dep] = 1
+}' noslash="$NOSLASH" $TMP.sed >> $TMP
+done
+       ;;
+
+       *)
+# Using -M or some other specific dependency-generating option
+$MKDEP_CC $MKDEP_CFLAGS $files | \
+       sed -e 's; \./; ;g' -e 's/ :/:/' | \
+       $SED > $TMP.sed
+# do not pipe to awk.  SGI awk wants a filename as argument.
+# (or '-', but I do not know if all other awks support that.)
 awk '
-$1 ~ /:/ {
-       filenm=$1;
-       dep=substr($0, length(filenm)+1);
+$1 ~ /:$/ {
+       filenm=$1
+       dep=substr($0, length(filenm)+1)
 }
-$1 !~ /:/ {
-       dep=$0;
+$1 !~ /:$/ {
+       dep=$0
 }
 /.*/ {
-       split(dep, depends, " ");
+       if ( length(filenm) < 2 ) next
+       if ( filenm ~ /:.*:$/ ) next
+       split(dep, depends, " ")
        for(d in depends) {
-               dfile = depends[d];
-               if (( noslash == "yes") && (dfile ~ /^\// )) next
+               dfile = depends[d]
                if ( length(dfile) < 2 ) continue
-               rec = filenm " " dfile;
-               print rec;
+               if ( dfile ~ /:/ ) continue
+               if (( noslash == "yes") && (dfile ~ /^\// )) continue
+               rec = filenm " " dfile
+               print rec
        }
-    }
-' noslash="$NOSLASH" >> $TMP
+}
+' noslash="$NOSLASH" $TMP.sed >> $TMP
+       ;;
+esac
 
 
 cat << _EOF_ >> $TMP
@@ -158,5 +211,5 @@ _EOF_
 
 # copy to preserve permissions
 cp $TMP $MAKE
-rm -f ${MAKE}.bak $TMP
+rm -f ${MAKE}.bak $TMP.sed $TMP
 exit 0