build: use thin archives rather than incremental linking

diff --git a/Makefile.main b/Makefile.main
index 516afdd6..aab6b7a2 100644
--- a/Makefile.main
+++ b/Makefile.main
@@ -126,7 +126,7 @@  LDFLAGS += -Wl,-pie
 LDFLAGS += -Wl,-Ttext-segment,$(LD_TEXT) -Wl,-N -Wl,--build-id=none
 LDFLAGS += -Wl,--no-multi-toc
 LDFLAGS += -mcpu=power7 -mbig-endian -Wl,--oformat,elf64-powerpc
-
+LDFLAGS_FINAL = $(LDFLAGS) -Wl,--whole-archive
 LDRFLAGS=-melf64ppc
 # Debug stuff
 #LDFLAGS += -Wl,-v -Wl,-Map,foomap 
@@ -213,8 +213,8 @@  OBJS += $(LIBC) $(CCAN) $(DEVSRC_OBJ) $(LIBPORE)
 OBJS_NO_VER = $(OBJS)
 ALL_OBJS = $(OBJS) version.o
 
-ALL_OBJS_1 = $(ALL_OBJS) asm/dummy_map.o
-ALL_OBJS_2 = $(ALL_OBJS) asm/real_map.o
+ALL_OBJS_1 = $(TARGET).tmp.a asm/dummy_map.o
+ALL_OBJS_2 = $(TARGET).tmp.a asm/real_map.o
 
 $(TARGET).lid.xz: $(TARGET).lid
 	$(call Q,XZ, cat $^ | xz -9 -C crc32 > $@, $@)
@@ -228,13 +228,17 @@  $(TARGET).lid.stb: $(TARGET).lid libstb/create-container
 $(TARGET).lid.xz.stb: $(TARGET).lid.xz libstb/create-container
 	$(call Q,STB-DEVELOPMENT-SIGNED-CONTAINER,$(SRC)/libstb/sign-with-local-keys.sh $< $@ $(SRC)/libstb/keys/,$@)
 
+$(TARGET).tmp.a: $(ALL_OBJS)
+	@rm -f $(TARGET).tmp.a
+	$(call Q,AR, $(AR) rcsTPD $@ $(ALL_OBJS), $@)
+
 $(TARGET).tmp.elf: $(ALL_OBJS_1) $(TARGET).lds $(KERNEL)
-	$(call Q,LD, $(CC) $(LDFLAGS) -T $(TARGET).lds $(ALL_OBJS_1) -o $@, $@)
+	$(call Q,LD, $(CC) $(LDFLAGS_FINAL) -o $@ -T $(TARGET).lds $(ALL_OBJS_1), $@)
 
 asm/real_map.o : $(TARGET).tmp.map
 
 $(TARGET).elf: $(ALL_OBJS_2) $(TARGET).lds $(KERNEL)
-	$(call Q,LD, $(CC) $(LDFLAGS) -T $(TARGET).lds $(ALL_OBJS_2) -o $@, $@)
+	$(call Q,LD, $(CC) $(LDFLAGS_FINAL) -o $@ -T $(TARGET).lds $(ALL_OBJS_2), $@)
 
 $(SUBDIRS):
 	$(call Q,MKDIR,mkdir -p $@, $@)
diff --git a/Makefile.rules b/Makefile.rules
index 80121c33..e5f6dfcf 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -67,8 +67,9 @@  endif
 %.i : %.c
 	$(call Q,CC, $(CC) $(call cook_cflags,$@) -E -c $< -o $@, $@)
 
-%built-in.o :
-	$(call Q,LD, $(LD) $(LDRFLAGS) -r $^ -o $@, $@)
+%built-in.a :
+	@rm -f $@
+	$(call Q,AR, $(AR) rcSTPD $@ $^, $@)
 
 %.lds : %.lds.S
 	$(call Q,CC, $(CC) $(CPPFLAGS) -P -E $< -o $@, $@)
diff --git a/asm/Makefile.inc b/asm/Makefile.inc
index 2828caf9..343abc23 100644
--- a/asm/Makefile.inc
+++ b/asm/Makefile.inc
@@ -2,7 +2,7 @@ 
 
 SUBDIRS += asm 
 ASM_OBJS = head.o misc.o kernel-wrapper.o cvc_entry.o
-ASM=asm/built-in.o
+ASM=asm/built-in.a
 
 # Add extra dependency to the kernel wrapper
 kernel_wrapper.o : $(KERNEL)
diff --git a/ccan/Makefile.inc b/ccan/Makefile.inc
index 1a89b2e8..36e75774 100644
--- a/ccan/Makefile.inc
+++ b/ccan/Makefile.inc
@@ -2,7 +2,7 @@ 
 
 SUBDIRS += ccan ccan/list ccan/str
 CCAN_OBJS = list/list.o str/str.o
-CCAN=ccan/built-in.o
+CCAN=ccan/built-in.a
 
 $(CCAN): $(CCAN_OBJS:%=ccan/%)
 
diff --git a/core/Makefile.inc b/core/Makefile.inc
index d6a7269f..20bc2ce8 100644
--- a/core/Makefile.inc
+++ b/core/Makefile.inc
@@ -15,7 +15,7 @@  ifeq ($(SKIBOOT_GCOV),1)
 CORE_OBJS += gcov-profiling.o
 endif
 
-CORE=core/built-in.o
+CORE=core/built-in.a
 
 CFLAGS_SKIP_core/relocate.o = -pg -fstack-protector-all
 CFLAGS_SKIP_core/relocate.o += -fstack-protector -fstack-protector-strong
diff --git a/hdata/Makefile.inc b/hdata/Makefile.inc
index c17b04ff..6f47314d 100644
--- a/hdata/Makefile.inc
+++ b/hdata/Makefile.inc
@@ -3,6 +3,6 @@ 
 SUBDIRS += hdata
 HDATA_OBJS = spira.o paca.o pcia.o hdif.o memory.o fsp.o iohub.o vpd.o slca.o
 HDATA_OBJS += cpu-common.o vpd-common.o hostservices.o i2c.o tpmrel.o
-DEVSRC_OBJ = hdata/built-in.o
+DEVSRC_OBJ = hdata/built-in.a
 
 $(DEVSRC_OBJ): $(HDATA_OBJS:%=hdata/%)
diff --git a/hw/Makefile.inc b/hw/Makefile.inc
index 04cacd12..2dc3cc07 100644
--- a/hw/Makefile.inc
+++ b/hw/Makefile.inc
@@ -8,7 +8,7 @@  HW_OBJS += phb3.o sfc-ctrl.o fake-rtc.o bt.o p8-i2c.o prd.o
 HW_OBJS += dts.o lpc-rtc.o npu.o npu-hw-procedures.o xive.o phb4.o
 HW_OBJS += fake-nvram.o lpc-mbox.o npu2.o npu2-hw-procedures.o
 HW_OBJS += phys-map.o sbe-p9.o capp.o occ-sensor.o vas.o
-HW=hw/built-in.o
+HW=hw/built-in.a
 
 # FIXME hack this for now
 CFLAGS_hw/phb4.o = -Wno-unused-value -Wno-unused-parameter
diff --git a/hw/ast-bmc/Makefile.inc b/hw/ast-bmc/Makefile.inc
index a97c0dbe..29e7a35b 100644
--- a/hw/ast-bmc/Makefile.inc
+++ b/hw/ast-bmc/Makefile.inc
@@ -1,5 +1,5 @@ 
 SUBDIRS += hw/ast-bmc
 
 AST_BMC_OBJS  = ast-io.o ast-sf-ctrl.o
-AST_BMC = hw/ast-bmc/built-in.o
+AST_BMC = hw/ast-bmc/built-in.a
 $(AST_BMC): $(AST_BMC_OBJS:%=hw/ast-bmc/%)
diff --git a/hw/ec/Makefile.inc b/hw/ec/Makefile.inc
index 09c9c848..f944d4df 100644
--- a/hw/ec/Makefile.inc
+++ b/hw/ec/Makefile.inc
@@ -3,6 +3,6 @@ 
 
 SUBDIRS += hw/ec
 EC_OBJS = gpio.o
-EC=hw/ec/built-in.o
+EC=hw/ec/built-in.a
 
 $(EC): $(EC_OBJS:%=hw/ec/%)
diff --git a/hw/fsp/Makefile.inc b/hw/fsp/Makefile.inc
index 71690954..7a477db7 100644
--- a/hw/fsp/Makefile.inc
+++ b/hw/fsp/Makefile.inc
@@ -6,5 +6,5 @@  FSP_OBJS += fsp-diag.o fsp-leds.o fsp-mem-err.o fsp-op-panel.o
 FSP_OBJS += fsp-elog-read.o fsp-elog-write.o fsp-epow.o fsp-dpo.o
 FSP_OBJS += fsp-dump.o fsp-mdst-table.o fsp-chiptod.o fsp-ipmi.o
 FSP_OBJS += fsp-attn.o
-FSP = hw/fsp/built-in.o
+FSP = hw/fsp/built-in.a
 $(FSP): $(FSP_OBJS:%=hw/fsp/%)
diff --git a/hw/ipmi/Makefile.inc b/hw/ipmi/Makefile.inc
index a54602cb..34d6bd31 100644
--- a/hw/ipmi/Makefile.inc
+++ b/hw/ipmi/Makefile.inc
@@ -3,5 +3,5 @@  SUBDIRS += hw/ipmi
 IPMI_OBJS  = ipmi-rtc.o ipmi-power.o ipmi-fru.o ipmi-sel.o
 IPMI_OBJS += ipmi-watchdog.o ipmi-sensor.o ipmi-attn.o
 
-IPMI = hw/ipmi/built-in.o
+IPMI = hw/ipmi/built-in.a
 $(IPMI): $(IPMI_OBJS:%=hw/ipmi/%)
diff --git a/libc/Makefile.inc b/libc/Makefile.inc
index 66ce4ab0..13f8034f 100644
--- a/libc/Makefile.inc
+++ b/libc/Makefile.inc
@@ -1,7 +1,7 @@ 
 LIBCDIR = libc
 
 SUBDIRS += $(LIBCDIR)
-LIBC = $(LIBCDIR)/built-in.o $(LIBCDIR)/time.o
+LIBC = $(LIBCDIR)/built-in.a $(LIBCDIR)/time.o
 
 include $(SRC)/$(LIBCDIR)/string/Makefile.inc
 include $(SRC)/$(LIBCDIR)/ctype/Makefile.inc
diff --git a/libc/ctype/Makefile.inc b/libc/ctype/Makefile.inc
index da78c983..c183a54b 100644
--- a/libc/ctype/Makefile.inc
+++ b/libc/ctype/Makefile.inc
@@ -14,6 +14,6 @@  SUBDIRS += $(LIBCDIR)/ctype
 
 CTYPE_OBJS = isdigit.o isprint.o isspace.o isxdigit.o tolower.o toupper.o
 
-CTYPE = $(LIBCDIR)/ctype/built-in.o
+CTYPE = $(LIBCDIR)/ctype/built-in.a
 $(CTYPE): $(CTYPE_OBJS:%=$(LIBCDIR)/ctype/%)
 
diff --git a/libc/stdio/Makefile.inc b/libc/stdio/Makefile.inc
index d2aee0f5..a5436d73 100644
--- a/libc/stdio/Makefile.inc
+++ b/libc/stdio/Makefile.inc
@@ -17,5 +17,5 @@  STDIO_OBJS = vfprintf.o vsnprintf.o fprintf.o \
 	     setvbuf.o fputc.o puts.o fputs.o putchar.o \
 	     stdchnls.o fileno.o snprintf.o
 
-STDIO = $(LIBCDIR)/stdio/built-in.o
+STDIO = $(LIBCDIR)/stdio/built-in.a
 $(STDIO): $(STDIO_OBJS:%=$(LIBCDIR)/stdio/%)
diff --git a/libc/stdlib/Makefile.inc b/libc/stdlib/Makefile.inc
index 22417dfb..8a78d173 100644
--- a/libc/stdlib/Makefile.inc
+++ b/libc/stdlib/Makefile.inc
@@ -15,6 +15,6 @@  SUBDIRS += $(LIBCDIR)/stdlib
 STDLIB_OBJS = error.o atoi.o atol.o strtol.o strtoul.o \
 	      rand.o labs.o
 
-STDLIB = $(LIBCDIR)/stdlib/built-in.o
+STDLIB = $(LIBCDIR)/stdlib/built-in.a
 $(STDLIB): $(STDLIB_OBJS:%=$(LIBCDIR)/stdlib/%)
 
diff --git a/libc/string/Makefile.inc b/libc/string/Makefile.inc
index fb2f0371..122f5daa 100644
--- a/libc/string/Makefile.inc
+++ b/libc/string/Makefile.inc
@@ -16,6 +16,6 @@  STRING_OBJS = strcat.o strchr.o strcmp.o strcpy.o strlen.o \
 	      strncmp.o strncpy.o strstr.o memset.o memcpy.o memcpy_from_ci.o \
 	      memmove.o memchr.o memcmp.o strcasecmp.o strncasecmp.o \
 	      strtok.o strdup.o
-STRING = $(LIBCDIR)/string/built-in.o
+STRING = $(LIBCDIR)/string/built-in.a
 $(STRING): $(STRING_OBJS:%=$(LIBCDIR)/string/%)
 
diff --git a/libfdt/Makefile.inc b/libfdt/Makefile.inc
index e477d7c4..63c9d38e 100644
--- a/libfdt/Makefile.inc
+++ b/libfdt/Makefile.inc
@@ -12,7 +12,7 @@  LIBFDT_OBJS = $(LIBFDT_SRCS:%.c=%.o)
 CFLAGS_SKIP_libfdt/fdt_sw.o = -Wstack-usage=4096
 
 SUBDIRS += libfdt
-LIBFDT = libfdt/built-in.o
+LIBFDT = libfdt/built-in.a
 
 $(LIBFDT): $(LIBFDT_OBJS:%=libfdt/%)
 
diff --git a/libflash/Makefile.inc b/libflash/Makefile.inc
index ea64eb46..2474abfc 100644
--- a/libflash/Makefile.inc
+++ b/libflash/Makefile.inc
@@ -2,6 +2,6 @@  LIBFLASH_SRCS = libflash.c libffs.c ecc.c blocklevel.c mbox-flash.c
 LIBFLASH_OBJS = $(LIBFLASH_SRCS:%.c=%.o)
 
 SUBDIRS += libflash
-LIBFLASH = libflash/built-in.o
+LIBFLASH = libflash/built-in.a
 
 $(LIBFLASH): $(LIBFLASH_OBJS:%=libflash/%)
diff --git a/libpore/Makefile.inc b/libpore/Makefile.inc
index cc891279..1060a049 100644
--- a/libpore/Makefile.inc
+++ b/libpore/Makefile.inc
@@ -3,7 +3,7 @@  LIBPORE_SRCS += p8_pore_table_static_data.c sbe_xip_image.c pore_inline_assemble
 LIBPORE_OBJS_1 = $(LIBPORE_SRCS:%.c=%.o)
 LIBPORE_OBJS = $(LIBPORE_OBJS_1:%.C=%.o)
 SUBDIRS += libpore
-LIBPORE = libpore/built-in.o
+LIBPORE = libpore/built-in.a
 
 CFLAGS_SKIP_libpore/pore_inline_assembler.o=-Wsuggest-attribute=const
 
diff --git a/libstb/Makefile.inc b/libstb/Makefile.inc
index 3ea530ad..6d54c5cd 100644
--- a/libstb/Makefile.inc
+++ b/libstb/Makefile.inc
@@ -6,7 +6,7 @@  SUBDIRS += $(LIBSTB_DIR)
 
 LIBSTB_SRCS = container.c tpm_chip.c cvc.c secureboot.c trustedboot.c
 LIBSTB_OBJS = $(LIBSTB_SRCS:%.c=%.o)
-LIBSTB = $(LIBSTB_DIR)/built-in.o
+LIBSTB = $(LIBSTB_DIR)/built-in.a
 
 include $(SRC)/$(LIBSTB_DIR)/mbedtls/Makefile.inc
 include $(SRC)/$(LIBSTB_DIR)/drivers/Makefile.inc
diff --git a/libstb/drivers/Makefile.inc b/libstb/drivers/Makefile.inc
index 3b8ed0f8..80356eb3 100644
--- a/libstb/drivers/Makefile.inc
+++ b/libstb/drivers/Makefile.inc
@@ -6,6 +6,6 @@  SUBDIRS += $(DRIVERS_DIR)
 
 DRIVERS_SRCS = tpm_i2c_interface.c tpm_i2c_nuvoton.c
 DRIVERS_OBJS = $(DRIVERS_SRCS:%.c=%.o)
-DRIVERS = $(DRIVERS_DIR)/built-in.o
+DRIVERS = $(DRIVERS_DIR)/built-in.a
 
 $(DRIVERS): $(DRIVERS_OBJS:%=$(DRIVERS_DIR)/%)
diff --git a/libstb/mbedtls/Makefile.inc b/libstb/mbedtls/Makefile.inc
index 07aa26a0..deacd26c 100644
--- a/libstb/mbedtls/Makefile.inc
+++ b/libstb/mbedtls/Makefile.inc
@@ -6,6 +6,6 @@  SUBDIRS += $(MBEDTLS_DIR)
 
 MBEDTLS_SRCS = sha512.c
 MBEDTLS_OBJS = $(MBEDTLS_SRCS:%.c=%.o)
-MBEDTLS = $(MBEDTLS_DIR)/built-in.o
+MBEDTLS = $(MBEDTLS_DIR)/built-in.a
 
 $(MBEDTLS): $(MBEDTLS_OBJS:%=$(MBEDTLS_DIR)/%)
diff --git a/libstb/tss/Makefile.inc b/libstb/tss/Makefile.inc
index 2b5c3b9f..ed5154d7 100644
--- a/libstb/tss/Makefile.inc
+++ b/libstb/tss/Makefile.inc
@@ -7,7 +7,7 @@  SUBDIRS += $(TSS_DIR)
 TSS_SRCS = trustedbootCmds.C trustedTypes.C trustedbootUtils.C \
 	   tpmLogMgr.C
 TSS_OBJS = $(TSS_SRCS:%.C=%.o)
-TSS = $(TSS_DIR)/built-in.o
+TSS = $(TSS_DIR)/built-in.a
 
 $(TSS): $(TSS_OBJS:%=$(TSS_DIR)/%)
 
diff --git a/libxz/Makefile.inc b/libxz/Makefile.inc
index 29873286..4fe7c3e4 100644
--- a/libxz/Makefile.inc
+++ b/libxz/Makefile.inc
@@ -2,6 +2,6 @@  LIBXZ_SRCS = xz_dec_stream.c xz_dec_lzma2.c xz_crc32.c
 LIBXZ_OBJS = $(LIBXZ_SRCS:%.c=%.o)
 
 SUBDIRS += libxz
-LIBXZ = libxz/built-in.o
+LIBXZ = libxz/built-in.a
 
 $(LIBXZ): $(LIBXZ_OBJS:%=libxz/%)
diff --git a/platforms/Makefile.inc b/platforms/Makefile.inc
index 90cd0f1c..3269532a 100644
--- a/platforms/Makefile.inc
+++ b/platforms/Makefile.inc
@@ -1,7 +1,7 @@ 
 PLATDIR = platforms
 
 SUBDIRS += $(PLATDIR)
-PLATFORMS = $(PLATDIR)/built-in.o
+PLATFORMS = $(PLATDIR)/built-in.a
 
 include $(SRC)/$(PLATDIR)/ibm-fsp/Makefile.inc
 include $(SRC)/$(PLATDIR)/rhesus/Makefile.inc
diff --git a/platforms/astbmc/Makefile.inc b/platforms/astbmc/Makefile.inc
index 49292c10..d9965365 100644
--- a/platforms/astbmc/Makefile.inc
+++ b/platforms/astbmc/Makefile.inc
@@ -6,6 +6,6 @@  ASTBMC_OBJS = pnor.o common.o slots.o \
 	      garrison.o barreleye.o \
 	      witherspoon.o zaius.o romulus.o p9dsu.o
 
-ASTBMC = $(PLATDIR)/astbmc/built-in.o
+ASTBMC = $(PLATDIR)/astbmc/built-in.a
 $(ASTBMC): $(ASTBMC_OBJS:%=$(PLATDIR)/astbmc/%)
 
diff --git a/platforms/ibm-fsp/Makefile.inc b/platforms/ibm-fsp/Makefile.inc
index e9daab2b..c4b55a31 100644
--- a/platforms/ibm-fsp/Makefile.inc
+++ b/platforms/ibm-fsp/Makefile.inc
@@ -2,6 +2,6 @@  SUBDIRS += $(PLATDIR)/ibm-fsp
 
 IBM_FSP_OBJS = common.o lxvpd.o apollo.o apollo-pci.o \
 	       firenze.o firenze-pci.o zz.o
-IBM_FSP = $(PLATDIR)/ibm-fsp/built-in.o
+IBM_FSP = $(PLATDIR)/ibm-fsp/built-in.a
 $(IBM_FSP): $(IBM_FSP_OBJS:%=$(PLATDIR)/ibm-fsp/%)
 
diff --git a/platforms/mambo/Makefile.inc b/platforms/mambo/Makefile.inc
index f3023ef0..b0e6b0c4 100644
--- a/platforms/mambo/Makefile.inc
+++ b/platforms/mambo/Makefile.inc
@@ -1,6 +1,6 @@ 
 SUBDIRS += $(PLATDIR)/mambo
 
 MAMBO_OBJS = mambo.o console.o
-MAMBO = $(PLATDIR)/mambo/built-in.o
+MAMBO = $(PLATDIR)/mambo/built-in.a
 $(MAMBO): $(MAMBO_OBJS:%=$(PLATDIR)/mambo/%)
 
diff --git a/platforms/qemu/Makefile.inc b/platforms/qemu/Makefile.inc
index 11a44dbd..d4f988e7 100644
--- a/platforms/qemu/Makefile.inc
+++ b/platforms/qemu/Makefile.inc
@@ -1,6 +1,6 @@ 
 SUBDIRS += $(PLATDIR)/qemu
 
 QEMU_OBJS = qemu.o
-QEMU = $(PLATDIR)/qemu/built-in.o
+QEMU = $(PLATDIR)/qemu/built-in.a
 $(QEMU): $(QEMU_OBJS:%=$(PLATDIR)/qemu/%)
 
diff --git a/platforms/rhesus/Makefile.inc b/platforms/rhesus/Makefile.inc
index 5899ca2f..3a3fd87e 100644
--- a/platforms/rhesus/Makefile.inc
+++ b/platforms/rhesus/Makefile.inc
@@ -1,6 +1,6 @@ 
 SUBDIRS += $(PLATDIR)/rhesus
 
 RHESUS_OBJS = rhesus.o
-RHESUS = $(PLATDIR)/rhesus/built-in.o
+RHESUS = $(PLATDIR)/rhesus/built-in.a
 $(RHESUS): $(RHESUS_OBJS:%=$(PLATDIR)/rhesus/%)