Just make C dependencies once, rather than each way

[ghc-hetmet.git] / rules / build-dependencies.mk

diff --git a/rules/build-dependencies.mk b/rules/build-dependencies.mk
index d6cf33e..2f8b607 100644 (file)
--- 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