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authorHerbert Valerio Riedel <hvr@gnu.org>2016-04-16 18:12:09 +0200
committerBen Gamari <ben@smart-cactus.org>2016-04-16 18:12:46 +0200
commit865602e0beb8e30ea1e1edf7db90f24088badb9e (patch)
treebbda9ab6adebd8b41a95f4f2c4760aab9c04b34e /rts/ghc.mk
parentf4e659121960eb81d5478f0b20d4cf6f4c0ed0d9 (diff)
downloadhaskell-865602e0beb8e30ea1e1edf7db90f24088badb9e.tar.gz
Rework CC/CC_STAGE0 handling in `configure.ac`
Rather than using the non-standard/idiomatic `--with-{gcc,clang}=...` scheme use the `CC=...` style scheme. The basic idea is to have Autoconf's CC/CFLAG/CPPFLAG apply to stage{1,2,3}, while having a separate _STAGE0 set of env-vars denote the bootstrap-toolchain flags/programs. This should be simpler, less confusing, and somewhat more in line with Autoconf's idioms (allowing us to reuse more of Autoconf rather than (re)inventing our own confusing non-standard m4 macros to do stuff that Autoconf could almost do already for us) Morever, expose CC_STAGE0 as a so-called "precious" variable. So now we can better control which bootstrapping gcc is used (by default the one used by the stage0 ghc, unless CC_STAGE0 is overriden) ``` Some influential environment variables: CC_STAGE0 C compiler command (bootstrap) CC C compiler command CFLAGS C compiler flags ... Use these variables to override the choices made by `configure' or to help it to find libraries and programs with nonstandard names/locations. ``` Test Plan: I've tested that cross-compiling with `--target=powerpc-linux-gnu` still works, and tried a few variants of settting `CC=` and `CC_STAGE0=`; `./validate` passed as well Reviewers: erikd, austin, bgamari, simonmar Reviewed By: simonmar Subscribers: Phyx, thomie Differential Revision: https://phabricator.haskell.org/D2078
Diffstat (limited to 'rts/ghc.mk')
-rw-r--r--rts/ghc.mk2
1 files changed, 1 insertions, 1 deletions
diff --git a/rts/ghc.mk b/rts/ghc.mk
index f57f3dacd4..d7a46f909a 100644
--- a/rts/ghc.mk
+++ b/rts/ghc.mk
@@ -538,7 +538,7 @@ ifeq "$(TargetOS_CPP)" "darwin"
# Darwin has a flag to tell dtrace which cpp to use.
# Unfortunately, this isn't supported on Solaris (See Solaris Dynamic Tracing
# Guide, Chapter 16, for the configuration variables available on Solaris)
-DTRACE_FLAGS = -x cpppath=$(WhatGccIsCalled)
+DTRACE_FLAGS = -x cpppath=$(CC)
endif
DTRACEPROBES_SRC = rts/RtsProbes.d