From a6ee8acfd893624e0b32269045eceda6405ff931 Mon Sep 17 00:00:00 2001 From: Karl Berry Date: Wed, 31 Oct 2012 03:36:44 +0000 Subject: /home/texlive/karl/Master/tlpkg/bin/tl-update-auto git-svn-id: svn://tug.org/texlive/trunk@28133 c570f23f-e606-0410-a88d-b1316a301751 --- Build/source/build-aux/depcomp | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'Build/source/build-aux') diff --git a/Build/source/build-aux/depcomp b/Build/source/build-aux/depcomp index 0544c683513..e1f51f482a9 100755 --- a/Build/source/build-aux/depcomp +++ b/Build/source/build-aux/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