From d3b0fe0858bc08a81c0ec68dd60f6b68f283b897 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ralf=20Cors=C3=A9pius?= Date: Wed, 21 Nov 2012 04:23:42 +0100 Subject: Update from automake-1.12.5. --- depcomp | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'depcomp') diff --git a/depcomp b/depcomp index 0544c68351..e1f51f482a 100755 --- a/depcomp +++ b/depcomp @@ -74,6 +74,9 @@ tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`} rm -f "$tmpdepfile" +# Avoid interferences from the environment. +gccflag= dashmflag= + # Some modes work just like other modes, but use different flags. We # parameterize here, but still list the modes in the big case below, # to make depend.m4 easier to write. Note that we *cannot* use a case @@ -108,7 +111,7 @@ if test "$depmode" = msvc7msys; then fi if test "$depmode" = xlc; then - # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency informations. + # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information. gccflag=-qmakedep=gcc,-MF depmode=gcc fi @@ -142,13 +145,17 @@ gcc3) ;; gcc) +## Note that this doesn't just cater to obsosete pre-3.x GCC compilers. +## but also to in-use compilers like IMB xlc/xlC and the HP C compiler. +## (see the conditional assignment to $gccflag above). ## There are various ways to get dependency output from gcc. Here's ## why we pick this rather obscure method: ## - Don't want to use -MD because we'd like the dependencies to end ## up in a subdir. Having to rename by hand is ugly. ## (We might end up doing this anyway to support other compilers.) ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like -## -MM, not -M (despite what the docs say). +## -MM, not -M (despite what the docs say). Also, it might not be +## supported by the other compilers which use the 'gcc' depmode. ## - Using -M directly means running the compiler twice (even worse ## than renaming). if test -z "$gccflag"; then -- cgit v1.2.3