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authorErik de Castro Lopo <erik.decastrolopo@ambiata.com>2017-04-05 05:53:46 +1000
committerErik de Castro Lopo <erikd@mega-nerd.com>2017-04-05 05:53:47 +1000
commit7e340c2bbf4a56959bd1e95cdd1cfdb2b7e537c2 (patch)
tree0f330ad348b5100f1a21312e7c91e43966789ec8 /mk
parent5e968f9261b798222a845ef38a54621b45013678 (diff)
downloadhaskell-7e340c2bbf4a56959bd1e95cdd1cfdb2b7e537c2.tar.gz
Enable new warning for fragile/incorrect CPP #if usage
The C code in the RTS now gets built with `-Wundef` and the Haskell code (stages 1 and 2 only) with `-Wcpp-undef`. We now get warnings whereever `#if` is used on undefined identifiers. Test Plan: Validate on Linux and Windows Reviewers: austin, angerman, simonmar, bgamari, Phyx Reviewed By: bgamari Subscribers: thomie, snowleopard Differential Revision: https://phabricator.haskell.org/D3278
Diffstat (limited to 'mk')
-rw-r--r--mk/warnings.mk4
1 files changed, 2 insertions, 2 deletions
diff --git a/mk/warnings.mk b/mk/warnings.mk
index 5ca097f17b..3c4c26d218 100644
--- a/mk/warnings.mk
+++ b/mk/warnings.mk
@@ -8,8 +8,8 @@ SRC_HC_OPTS += -Wall
# isn't supported yet (https://ghc.haskell.org/trac/ghc/wiki/Design/Warnings).
#
# See Note [Stage number in build variables] in mk/config.mk.in.
-SRC_HC_OPTS_STAGE1 += $(WERROR)
-SRC_HC_OPTS_STAGE2 += $(WERROR)
+SRC_HC_OPTS_STAGE1 += $(WERROR) -Wcpp-undef
+SRC_HC_OPTS_STAGE2 += $(WERROR) -Wcpp-undef
ifneq "$(GccIsClang)" "YES"