X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=depend.sh;fp=depend.sh;h=72fde4ba7e05ac9cee7c9c4b24a8856aebda8fb8;hb=d3fe100dfc120244d316e083ce87b1eb130fe4fd;hp=0000000000000000000000000000000000000000;hpb=794f2398b8fe84bf398bb10d6eeca6fe6737f65f;p=secnet.git

diff --git a/depend.sh b/depend.sh
new file mode 100755
index 0000000..72fde4b
--- /dev/null
+++ b/depend.sh
@@ -0,0 +1,22 @@
+#!/bin/sh
+
+# For more information see "Recursive Make Considered Harmful" at
+# http://www.canb.auug.org.au/~millerp/rmch/recu-make-cons-harm.html
+
+set -e
+set -u
+
+cutout="$1"
+shift
+
+# cutout may contain the character '.' which means a special thing to sed
+# Escape all '.'s (i.e. '..' -> '\.\.')
+cutout2="`echo ${cutout} | sed -e 's@\.@\\\.@g'`"
+
+# We don't bother depending on system header files (which have names
+# starting with '/'). We arrange for both the .o and the .d file to depend
+# on the appropriate header files. We're using VPATH, so we turn pathnames
+# of the form "${srcdir}/foo" into just "foo" (we expect srcdir to be
+# passed as our first command line argument)
+gcc -M -MG "$@" |
+sed -e 's@ /[^ ]*@@g' -e 's@^\(.*\)\.o:@\1.d \1.o:@' -e "s@${cutout2}/@@g"