Makefile.am: Add definition of AM_CXXFLAGS.

	* testsuite/Makefile.am: Add definition of AM_CXXFLAGS.
	Change definition of CXX to use $(shell) instead of backticks.
	* testsuite/Makefile.in: Regenerate.

From-SVN: r80693

libstdc++-v3/testsuite/Makefile.am

@@ -30,7 +30,8 @@ AM_RUNTESTFLAGS =
 
 ## CXX is actually a "C" compiler. These are real C++ programs.
 testsuite_flags_script=${glibcxx_builddir}/scripts/testsuite_flags
-CXX=`${testsuite_flags_script} --build-cxx`
+CXX         = $(shell ${testsuite_flags_script} --build-cxx)
+AM_CXXFLAGS = $(shell ${testsuite_flags_script} --cxxflags)
 
 GLIBGCC_DIR=`$(CC) -print-libgcc-file-name | sed 's,/[^/]*$$,,'`
 GLIBCXX_DIR=${glibcxx_builddir}/src/.libs

libstdc++-v3/testsuite/Makefile.in

@@ -115,7 +115,7 @@ CPPFLAGS = @CPPFLAGS@
 CSTDIO_H = @CSTDIO_H@
 CTIME_CC = @CTIME_CC@
 CTIME_H = @CTIME_H@
-CXX = `${testsuite_flags_script} --build-cxx`
+CXX = $(shell ${testsuite_flags_script} --build-cxx)
 CXXCPP = @CXXCPP@
 CXXFLAGS = @CXXFLAGS@
 CYGPATH_W = @CYGPATH_W@
@@ -266,6 +266,7 @@ AM_CPPFLAGS = $(GLIBCXX_INCLUDES)
 AM_MAKEFLAGS = -j1
 AM_RUNTESTFLAGS = 
 testsuite_flags_script = ${glibcxx_builddir}/scripts/testsuite_flags
+AM_CXXFLAGS = $(shell ${testsuite_flags_script} --cxxflags)
 GLIBGCC_DIR = `$(CC) -print-libgcc-file-name | sed 's,/[^/]*$$,,'`
 GLIBCXX_DIR = ${glibcxx_builddir}/src/.libs
 CXXLINK = \