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author | Nicholas Piggin <npiggin@gmail.com> | 2018-02-10 18:42:49 +1000 |
---|---|---|
committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2018-02-28 20:28:39 -0600 |
commit | f6159cff5d91e5c0810d0c9285a1d2370a38e2b7 (patch) | |
tree | c6148aef1cc7f967baaf9b7a65486b7b4c95678f /platforms | |
parent | f30286c494312caa81333a077da58f501894c2bb (diff) | |
download | skiboot-f6159cff5d91e5c0810d0c9285a1d2370a38e2b7.zip skiboot-f6159cff5d91e5c0810d0c9285a1d2370a38e2b7.tar.gz skiboot-f6159cff5d91e5c0810d0c9285a1d2370a38e2b7.tar.bz2 |
build: use thin archives rather than incremental linking
This changes to build system to use thin archives rather than
incremental linking for built-in.o, similar to recent change to Linux.
built-in.o is renamed to built-in.a, and is created as a thin archive
with no index, for speed and size. All built-in.a are aggregated into
a skiboot.tmp.a which is a thin archive built with an index, making it
suitable or linking. This is input into the final link.
The advantags of build size and linker code placement flexibility are
not as great with skiboot as a bigger project like Linux, but it's a
conceptually better way to build, and is more compatible with link
time optimisation in toolchains which might be interesting for skiboot
particularly for size reductions.
Size of build tree before this patch is 34.4MB, afterwards 23.1MB.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'platforms')
-rw-r--r-- | platforms/Makefile.inc | 2 | ||||
-rw-r--r-- | platforms/astbmc/Makefile.inc | 2 | ||||
-rw-r--r-- | platforms/ibm-fsp/Makefile.inc | 2 | ||||
-rw-r--r-- | platforms/mambo/Makefile.inc | 2 | ||||
-rw-r--r-- | platforms/qemu/Makefile.inc | 2 | ||||
-rw-r--r-- | platforms/rhesus/Makefile.inc | 2 |
6 files changed, 6 insertions, 6 deletions
diff --git a/platforms/Makefile.inc b/platforms/Makefile.inc index 90cd0f1..3269532 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 49292c1..d996536 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 e9daab2..c4b55a3 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 f3023ef..b0e6b0c 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 11a44db..d4f988e 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 5899ca2..3a3fd87 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/%) |