diff options
| author | Simon Brenner <olsner@gmail.com> | 2016-12-16 12:16:05 -0500 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2016-12-16 12:17:01 -0500 |
| commit | 8f71d9581ee0a1826c0105e51a7048f0c7669492 (patch) | |
| tree | 0a11a9c7e229bafde68ed11bcb076d7d54411d96 /mk | |
| parent | 4026b452817e9d4241691c58d131904bd0eb1fec (diff) | |
| download | haskell-8f71d9581ee0a1826c0105e51a7048f0c7669492.tar.gz | |
Enable split sections by default where possible
On non-windows platforms with GNU ld, enable SplitSections in the GHC
build by default.
Reviewers: austin, bgamari
Reviewed By: bgamari
Subscribers: DemiMarie, thomie
Differential Revision: https://phabricator.haskell.org/D1800
GHC Trac Issues: #11445
Diffstat (limited to 'mk')
| -rw-r--r-- | mk/config.mk.in | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/mk/config.mk.in b/mk/config.mk.in index 06c12bfb44..5141ccf724 100644 --- a/mk/config.mk.in +++ b/mk/config.mk.in @@ -339,8 +339,12 @@ SupportsSplitObjs := $(strip \ $(filter NO,$(GhcUnregisterised))),\ YES,NO)) -# By default, enable SplitObjs for the libraries if this build supports it -SplitObjs=$(SupportsSplitObjs) +# By default, enable SplitObjs for the libraries if this build supports it. +# Unless SplitSections is enabled - then let that take precedence. +SplitObjs = $(strip \ + $(if $(and $(filter YES,$(SupportsSplitObjs)),\ + $(filter NO,$(SplitSections))),\ + YES,NO)) # ---------------------------------------------------------------------------- # Section splitting @@ -349,9 +353,16 @@ SplitObjs=$(SupportsSplitObjs) # like SplitObjs, but doesn't require post-processing and splitting of object # files. # -# Set SplitSections=YES in your build.mk to enable. - -SplitSections=NO +# Set SplitSections=YES or NO in your build.mk to override the default. +# +# This is not supported on Darwin (where you can use subsections-via-symbols +# instead) and Windows is not yet working. (See #11445 and related tickets.) +OsSupportsSplitSections=$(strip $(if $(filter $(TargetOS_CPP),mingw32 darwin),NO,YES)) +SupportsSplitSections = $(strip \ + $(if $(and $(filter YES,$(OsSupportsSplitSections)),\ + $(filter YES,$(LdIsGNULd))),\ + YES,NO)) +SplitSections ?= $(SupportsSplitSections) # ---------------------------------------------------------------------------- |