Hi!
:= assigned variable gets evaluated right away, including the case when
host doesn't have any Ada compiler installed. In that case we remove ada
from enabled languages, but still RTS_DIR is sometimes computed.
With this patch we could call gnatls 4 times (or even 6 times) instead of
just once, but as gnatls isn't very expensive command, I think it is worth
doing that.
Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?
2011-11-30 Jakub Jelinek <ja...@redhat.com>
PR bootstrap/51201
* gcc-interface/Make-lang.in: Initialize RTS_DIR with = instead of :=.
--- gcc/ada/gcc-interface/Make-lang.in.jj 2011-11-28 17:58:01.000000000
+0100
+++ gcc/ada/gcc-interface/Make-lang.in 2011-11-30 11:47:18.723657889 +0100
@@ -118,7 +118,7 @@ ifeq ($(build), $(host))
# put the host RTS dir first in the PATH to hide the default runtime
# files that are among the sources
- RTS_DIR:=$(strip $(subst \,/,$(shell gnatls -v | grep adalib )))
+ RTS_DIR=$(strip $(subst \,/,$(shell gnatls -v | grep adalib )))
ADA_TOOLS_FLAGS_TO_PASS=\
CC="$(CC)" \
@@ -153,7 +153,7 @@ else
else
# This is a canadian cross. We should use a toolchain running on the
# build platform and targeting the host platform.
- RTS_DIR:=$(strip $(subst \,/,$(shell $(GNATLS_FOR_HOST) -v | grep adalib
)))
+ RTS_DIR=$(strip $(subst \,/,$(shell $(GNATLS_FOR_HOST) -v | grep adalib )))
ADA_TOOLS_FLAGS_TO_PASS=\
CC="$(CC)" \
$(COMMON_FLAGS_TO_PASS) $(ADA_FLAGS_TO_PASS) \
Jakub
