Open-source the TEE Core
Signed-off-by: Pascal Brand <pascal.brand@st.com>
diff --git a/mk/compile.mk b/mk/compile.mk
new file mode 100644
index 0000000..e18cd8c
--- /dev/null
+++ b/mk/compile.mk
@@ -0,0 +1,114 @@
+# Input
+#
+# The output from mk/sub.mk
+# base-prefix
+#
+# Output
+#
+# set objs
+# update cleanfiles
+#
+# Generates explicit rules for all objs
+
+objs :=
+
+# Disable all builtin rules
+.SUFFIXES:
+
+comp-cflags$(sm) = -std=gnu99
+comp-aflags$(sm) =
+comp-cppflags$(sm) =
+
+ifndef NOWERROR
+comp-cflags$(sm) += -Werror
+endif
+comp-cflags$(sm) += -fdiagnostics-show-option
+
+comp-cflags-warns-high = \
+ -Wall -Wcast-align \
+ -Werror-implicit-function-declaration -Wextra -Wfloat-equal \
+ -Wformat-nonliteral -Wformat-security -Wformat=2 -Winit-self \
+ -Wmissing-declarations -Wmissing-format-attribute \
+ -Wmissing-include-dirs -Wmissing-noreturn \
+ -Wmissing-prototypes -Wnested-externs -Wpointer-arith \
+ -Wshadow -Wstrict-prototypes -Wswitch-default \
+ -Wwrite-strings \
+ -Wno-missing-field-initializers -Wno-format-zero-length
+comp-cflags-warns-medium = \
+ -Waggregate-return -Wredundant-decls
+comp-cflags-warns-low = \
+ -Winline \
+ -Wold-style-definition -Wstrict-aliasing=2 \
+ -Wundef -pedantic \
+ -Wdeclaration-after-statement
+
+comp-cflags-warns-1:= $(comp-cflags-warns-high)
+comp-cflags-warns-2:= $(comp-cflags-warns-1) $(comp-cflags-warns-medium)
+comp-cflags-warns-3:= $(comp-cflags-warns-2) $(comp-cflags-warns-low)
+
+WARNS ?= 3
+
+comp-cflags$(sm) += $(comp-cflags-warns-$(WARNS))
+
+.PHONY: FORCE
+FORCE:
+
+define process_srcs
+objs += $2
+comp-dep-$2 := $$(dir $2).$$(notdir $2).d
+comp-temp-dep-$2:= $$(comp-dep-$2).tmp
+comp-cmd-file-$2:= $$(dir $2).$$(notdir $2).cmd
+comp-sm-$2 := $(sm)
+
+cleanfiles := $$(cleanfiles) $$(comp-dep-$2) $$(comp-cmd-file-$2) $2
+
+ifeq ($$(filter %.c,$1),$1)
+comp-flags-$2 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \
+ $$(cflags-remove-$2), \
+ $$(CFLAGS) $$(CFLAGS_WARNS) \
+ $$(comp-cflags$$(comp-sm-$2)) $$(cflags$$(comp-sm-$2)) \
+ $$(cflags-$2))
+else ifeq ($$(filter %.S,$1),$1)
+comp-flags-$2 = -DASM=1 $$(filter-out $$(AFLAGS_REMOVE) $$(aflags-remove) \
+ $$(aflags-remove-$2), \
+ $$(AFLAGS) $$(comp-aflags$$(comp-sm-$2)) \
+ $$(aflags$$(comp-sm-$2)) $$(aflags-$2))
+else
+$$(error "Don't know what to do with $1")
+endif
+
+
+comp-flags-$2 += -Wp,-MD,$$(comp-temp-dep-$2) \
+ $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \
+ $$(cppflags-remove-$2), \
+ $$(nostdinc) $$(CPPFLAGS) \
+ $$(addprefix -I,$$(incdirs$$(comp-sm-$2))) \
+ $$(cppflags$$(comp-sm-$2)) $$(cppflags-$2))
+
+comp-cmd-$2 = $$(CC) $$(comp-flags-$2) -c $$< -o $$@
+
+-include $$(comp-cmd-file-$2)
+-include $$(comp-dep-$2)
+
+
+$2: $1 FORCE
+# Check if any prerequisites are newer than the target and
+# check if command line has changed
+ $$(if $$(strip $$? $$(filter-out $$(comp-cmd-$2), $$(old-cmd-$2)) \
+ $$(filter-out $$(old-cmd-$2), $$(comp-cmd-$2))), \
+ @set -e ;\
+ mkdir -p $$(dir $2) ;\
+ echo [$$(comp-sm-$2)] CC $1 ;\
+ $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$2)) ;\
+ $$(comp-cmd-$2) ;\
+ $(cmd-fixdep) $$(dir $2) < $$(comp-temp-dep-$2) > \
+ $$(comp-dep-$2) ;\
+ rm -f $$(comp-temp-dep-$2) ;\
+ echo "old-cmd-$2 := $$(subst \",\\\",$$(comp-cmd-$2))" > \
+ $$(comp-cmd-file-$2) ;\
+ )
+
+endef
+
+$(foreach f, $(srcs), $(eval $(call \
+ process_srcs,$(f),$(out-dir)$(base-prefix)$$(basename $f).o)))