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-rw-r--r--config.if17
1 files changed, 8 insertions, 9 deletions
diff --git a/config.if b/config.if
index e8978cae664..aa35a3f8140 100644
--- a/config.if
+++ b/config.if
@@ -2,9 +2,8 @@
# Don't call it directly. This shell script fragment is called to
# determine:
#
-# 1. libstcxx_interface: the interface name for libstdc++.
-# 2. cxx_interface: the interface name for c++.
-# 3. libc_interface: the interface name for libc.
+# 1. libstcxx_incdir: the interface name for libstdc++.
+# 2. libc_interface: the interface name for libc.
#
# Get the top level src dir.
@@ -21,12 +20,12 @@ else
if_topsrcdir=${top_srcdir}
fi
-libstdcxx_srcdir=${if_topsrcdir}/libstdc++-v3
-# We check libstdc++-v3/configure.in for libstdcxx_interface.
-libstdcxx_interface=`grep "^INTERFACE" ${libstdcxx_srcdir}/configure.in | sed 's/INTERFACE[ ]*=[ ]*\(.*\)/\1/'`
-libstdcxx_incdir=g++-${libstdcxx_interface}
-# Used to version libstdc++ shared libraries
-cxx_interface=2
+# Set libstdcxx_incdir.
+# This is the same as gcc/configure.in and libstdc++-v3/acinclude.m4.
+gcc_version_trigger=${if_topsrcdir}/gcc/version.c
+gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*"\([^"]*\)".*/\1/'`
+gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
+libstdcxx_incdir=c++/${gcc_version}
# The trickiest part is libc_interface.
if [ -z "${libc_interface}" ]