build: -fno-asynchronous-unwind-tables

skiboot does not use unwind tables, this option saves about 100kB, mostly from .text. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
open-power · Apr 16, 2019 · 36dca1e · 36dca1e
1 parent 9fde370
commit 36dca1e
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diff --git a/Makefile.main b/Makefile.main
@@ -74,7 +74,7 @@ ifeq ($(DEBUG),1)
 CPPFLAGS += -DDEBUG -DCCAN_LIST_DEBUG
 endif
 
-CFLAGS := -fno-strict-aliasing -pie -fpie -fno-pic -mbig-endian -m64
+CFLAGS := -fno-strict-aliasing -pie -fpie -fno-pic -mbig-endian -m64 -fno-asynchronous-unwind-tables
 CFLAGS += -mcpu=power7
 CFLAGS += -Wl,--oformat,elf64-powerpc
 CFLAGS += $(call try-cflag,$(CC),-ffixed-r13)

diff --git a/skiboot.lds.S b/skiboot.lds.S
@@ -175,6 +175,7 @@ SECTIONS
 	/* Discards */
 	/DISCARD/ : {
 		*(.comment)
+		*(.eh_frame)
 		*(.interp)
 	}
 }