Support dependency generation with some non-GCC compilers.

[tcpdump] / mkdep

diff --git a/mkdep b/mkdep
index 2a9c221b1f1d79219c4df6ae939b00d19added05..3062e642eab8a017cb9f26efcf1ad910a4ee8e0c 100755 (executable)
--- a/mkdep
+++ b/mkdep
@@ -18,6 +18,7 @@ export PATH
 
 MAKE=Makefile                  # default makefile name is "Makefile"
 CC=cc                          # default C compiler is "cc"
+DEPENDENCY_CFLAG=-M            # default dependency-generation flag is -M
 
 while :
        do case "$1" in
@@ -31,6 +32,11 @@ while :
                        MAKE=$2
                        shift; shift ;;
 
+               # -m allows you to specify the dependency-generation flag
+               -m)
+                       DEPENDENCY_CFLAG=$2
+                       shift; shift ;;
+
                # the -p flag produces "program: program.c" style dependencies
                # so .o's don't get produced
                -p)
@@ -42,7 +48,7 @@ while :
 done
 
 if [ $# = 0 ] ; then
-       echo 'usage: mkdep [-p] [-c cc] [-f makefile] [flags] file ...'
+       echo 'usage: mkdep [-p] [-c cc] [-f makefile] [-m dependency-cflag] [flags] file ...'
        exit 1
 fi
 
@@ -74,7 +80,7 @@ _EOF_
 # sed -e 's/:[^"]*"\([^"]*\)".*/: \1/' -e 's/\.c/.o/' |
 
 # XXX this doesn't work with things like "-DDECLWAITSTATUS=union\ wait"
-$CC -M $* |
+$CC $DEPENDENCY_CFLAG $* |
 sed "
        s; \./; ;g
        $SED" |