Use the substituted value for GCDFLAGS instead of hardcoding $(CFLAGS) so
that the subdir configure scripts use the configured value.
* configure.ac (GDCFLAGS): Set default from ${CFLAGS}.
* configure: Regenerate.
* Makefile.in (GDCFLAGS): Substitute @GDCFLAGS@.
CXXFLAGS = @CXXFLAGS@
LIBCXXFLAGS = $(CXXFLAGS) -fno-implicit-templates
GOCFLAGS = $(CFLAGS)
-GDCFLAGS = $(CFLAGS)
+GDCFLAGS = @GDCFLAGS@
GM2FLAGS = $(CFLAGS)
# Pass additional PGO and LTO compiler options to the PGO build.
+GDCFLAGS=${GDCFLAGS-${CFLAGS}}
# Target tools.
AC_SUBST(CXXFLAGS)
AC_SUBST(GDC)
AC_SUBST(GDCFLAGS)
+GDCFLAGS=${GDCFLAGS-${CFLAGS}}
# Target tools.
AC_ARG_WITH([build-time-tools],