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authorIan Lynagh <igloo@earth.li>2009-12-15 13:53:50 +0000
committerIan Lynagh <igloo@earth.li>2009-12-15 13:53:50 +0000
commit6f859910070556a0cf07fef17632ec6f18a39984 (patch)
tree83805460bc7d71f65bda9d8b5a85183a1fbd03e7 /rules/build-dependencies.mk
parent071f080ab938648063db1e3c9e0b4d01e9621b1f (diff)
downloadhaskell-6f859910070556a0cf07fef17632ec6f18a39984.tar.gz
Just make C dependencies once, rather than each way
This makes generating C dependencies for the RTS take 3 seconds, rather than 30.
Diffstat (limited to 'rules/build-dependencies.mk')
-rw-r--r--rules/build-dependencies.mk13
1 files changed, 8 insertions, 5 deletions
diff --git a/rules/build-dependencies.mk b/rules/build-dependencies.mk
index d6cf33ea8a..2f8b60755b 100644
--- a/rules/build-dependencies.mk
+++ b/rules/build-dependencies.mk
@@ -45,9 +45,12 @@ $$($1_$2_depfile_c_asm) : $$($1_$2_C_FILES_DEPS) $$($1_$2_S_FILES) | $$$$(dir $$
"$$(RM)" $$(RM_OPTS) $$@.tmp
touch $$@.tmp
ifneq "$$(strip $$($1_$2_C_FILES_DEPS)$$($1_$2_S_FILES))" ""
+# We ought to actually do this for each way in $$($1_$2_WAYS), but then
+# it takes a long time to make the C deps for the RTS (30 seconds rather
+# than 3), so instead we just pass the list of ways in and let addCFileDeps
+# copy the deps for each way on the assumption that they are the same
$$(foreach f,$$($1_$2_C_FILES_DEPS) $$($1_$2_S_FILES), \
- $$(foreach w,$$($1_$2_WAYS), \
- $$(call addCFileDeps,$1,$2,$$($1_$2_depfile_c_asm),$$f,$$w)))
+ $$(call addCFileDeps,$1,$2,$$($1_$2_depfile_c_asm),$$f,$$($1_$2_WAYS)))
"$$(RM)" $$(RM_OPTS) $$@.bit
endif
echo "$1_$2_depfile_c_asm_EXISTS = YES" >> $$@.tmp
@@ -79,12 +82,12 @@ endef
# $2 = distdir
# $3 = depfile
# $4 = file
-# $5 = way
+# $5 = ways
# The formatting of this definition (e.g. the blank line above) is
# important, in order to get make to generate the right makefile code.
define addCFileDeps
- $(CPP) $($1_$2_MKDEPENDC_OPTS) $($1_$2_$5_ALL_CC_OPTS) $($(basename $4)_CC_OPTS) -MM $4 -MF $3.bit
- sed -e "1s|\.o|\.$($5_osuf)|" -e "1s|^|$(dir $4)|" -e "1s|$1/|$1/$2/build/|" -e "s|$(TOP)/||g" -e "s|$2/build/$2/build|$2/build|g" $3.bit >> $3.tmp
+ $(CPP) $($1_$2_MKDEPENDC_OPTS) $($1_$2_v_ALL_CC_OPTS) $($(basename $4)_CC_OPTS) -MM $4 -MF $3.bit
+ $(foreach w,$5,sed -e "1s|\.o|\.$($w_osuf)|" -e "1s|^|$(dir $4)|" -e "1s|$1/|$1/$2/build/|" -e "s|$(TOP)/||g" -e "s|$2/build/$2/build|$2/build|g" $3.bit >> $3.tmp &&) true
endef