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Date: Wed, 23 Apr 2003 18:50:00 -0000
From: Janis Johnson <janis187@us.ibm.com>
To: gcc@gcc.gnu.org
Subject: libstdc++ testsuite failures and GLIBCPP_BUILD_PCH
Message-ID: <20030423111917.A13536@us.ibm.com>
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Testing of libstdc++-v3 for a cross powerpc64-linux compiler fails
because bits/stdc++.h isn't found.  It appears to be a configuration
or build problem, but I don't understand how that mechanism works.

>From libstdc++-v3/include/Makefile.am:

if GLIBCPP_BUILD_PCH
pch_build = ${pch_input}
pch_install = install-pch
else
pch_build =
pch_install =
endif

>From libstdc++-v3/include/Makefile.in:

@GLIBCPP_BUILD_PCH_TRUE@pch_build = ${pch_input}
@GLIBCPP_BUILD_PCH_FALSE@pch_build =
@GLIBCPP_BUILD_PCH_TRUE@pch_install = install-pch
@GLIBCPP_BUILD_PCH_FALSE@pch_install =

For a native i686-linux build, from
i686-pc-linux-gnu/libstdc++-v3/include/Makefile:

pch_build = ${pch_input}
#pch_build =
pch_install = install-pch
#pch_install =

For a cross build of powerpc64-linux from powerpc-linux, from
powerpc64-linux/libstdc++-v3/include/Makefile:

pch_build = ${pch_input}
pch_build =
pch_install = install-pch
pch_install =

So, what magic is going on with @GLIBCPP_BUILD_PCH_TRUE@ and
@GLIBCPP_BUILD_PCH_FALSE@, and why are they both true for my cross
build?

Janis