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https://bugs.gentoo.org/601426
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https://lists.gnu.org/archive/html/bug-ncurses/2015-02/msg00012.html
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From: John Vogel
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Subject: [PATCH] c++ binding missed when cross compiling
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Date: Mon, 16 Feb 2015 01:01:48 -0500
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The configure script hard codes the include dir to the prefix'ed include dir,
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when checking if c++ compiler works. This breaks the compiler's built-in search
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path. I've included two patches. The first works on the configure.in file, which
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requires your autoconf stuff to test and I'm not ready to meddle with at the
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moment. The other works directly on the configure file. I've tested the second
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one; it should mirror what the first patch tries to achieve and works for me.
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--- a/configure
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+++ b/configure
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@@ -2938,10 +2938,6 @@
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echo "$as_me:2938: checking if $CXX works" >&5
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echo $ECHO_N "checking if $CXX works... $ECHO_C" >&6
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- save_CPPFLAGS="$CPPFLAGS"
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- eval cf_includedir=${includedir}
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- CPPFLAGS="$CPPFLAGS -I${cf_includedir}"
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-
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cat >conftest.$ac_ext <<_ACEOF
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#line 2946 "configure"
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#include "confdefs.h"
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@@ -2978,7 +2974,6 @@
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cf_cxx_works=no
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fi
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rm -f conftest.$ac_objext conftest.$ac_ext
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- CPPFLAGS="$save_CPPFLAGS"
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echo "$as_me:2983: result: $cf_cxx_works" >&5
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echo "${ECHO_T}$cf_cxx_works" >&6
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