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| author | Denis Vlasenko | 2008-04-11 11:27:29 +0000 |
|---|---|---|
| committer | Denis Vlasenko | 2008-04-11 11:27:29 +0000 |
| commit | 93b8263652ac001247ff923499bdc04ab0a1a4c4 (patch) | |
| tree | 9c608c11471a562bbb359ec661cb4e3a9cd5489a | |
| parent | 80f647c21c4457b5f74f5cdd87b789a0fa0d7c0d (diff) | |
| download | busybox-93b8263652ac001247ff923499bdc04ab0a1a4c4.zip busybox-93b8263652ac001247ff923499bdc04ab0a1a4c4.tar.gz | |
fix build with gcc -combine
| -rw-r--r-- | libbb/ptr_to_globals.c | 15 | ||||
| -rw-r--r-- | scripts/Makefile.IMA | 14 | ||||
| -rw-r--r-- | shell/ash_ptr_hack.c | 17 |
3 files changed, 40 insertions, 6 deletions
diff --git a/libbb/ptr_to_globals.c b/libbb/ptr_to_globals.c index f8ccbf1..48cf8d8 100644 --- a/libbb/ptr_to_globals.c +++ b/libbb/ptr_to_globals.c @@ -5,7 +5,20 @@ * Licensed under GPLv2, see file LICENSE in this tarball for details. */ +struct globals; + +#ifndef GCC_COMBINE + /* We cheat here. It is declared as const ptr in libbb.h, * but here we make it live in R/W memory */ -struct globals; struct globals *ptr_to_globals; + +#else + +/* gcc -combine will see through and complain */ +/* Using alternative method which is more likely to break + * on weird architectures, compilers, linkers and so on */ +struct globals *const ptr_to_globals __attribute__ ((section (".data"))); + +#endif + diff --git a/scripts/Makefile.IMA b/scripts/Makefile.IMA index 762e252..d246517 100644 --- a/scripts/Makefile.IMA +++ b/scripts/Makefile.IMA @@ -145,8 +145,10 @@ include libbb/Kbuild lib-all-y += $(patsubst %,libbb/%,$(sort $(lib-y))) lib-y:= -busybox: $(usage_stuff) - $(CC) $(CPPFLAGS) $(CFLAGS) $(EXTRA_CFLAGS) --combine $(WHOLE_PROGRAM) \ +busybox: $(usage_stuff) include/applet_tables.h + $(CC) $(CPPFLAGS) $(CFLAGS) $(EXTRA_CFLAGS) \ + -DGCC_COMBINE=1 \ + --combine $(WHOLE_PROGRAM) \ -funit-at-a-time -Wno-error -std=gnu99 \ -o $(@)_unstripped $(lib-all-y:.o=.c) \ -Wl,--start-group -lcrypt -lm -Wl,--end-group @@ -154,7 +156,13 @@ busybox: $(usage_stuff) -$(STRIP) -s -R .note -R .comment -R .version $@ applets/usage: - $(HOSTCC) -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -I$(srctree)/include -o applets/usage applets/usage.c + $(HOSTCC) -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -I$(srctree)/include -o applets/usage applets/usage.c + +applets/applet_tables: + $(HOSTCC) -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -I$(srctree)/include -o applets/applet_tables applets/applet_tables.c + include/usage_compressed.h: $(srctree)/include/usage.h applets/usage $(srctree)/applets/usage_compressed include/usage_compressed.h applets +include/applet_tables.h: $(srctree)/include/applets.h + applets/applet_tables include/applet_tables.h diff --git a/shell/ash_ptr_hack.c b/shell/ash_ptr_hack.c index 490b73b..68d9072 100644 --- a/shell/ash_ptr_hack.c +++ b/shell/ash_ptr_hack.c @@ -5,12 +5,25 @@ * Licensed under GPLv2, see file LICENSE in this tarball for details. */ -/* We cheat here. They are declared as const ptr in ash.c, - * but here we make them live in R/W memory */ struct globals_misc; struct globals_memstack; struct globals_var; +#ifndef GCC_COMBINE + +/* We cheat here. They are declared as const ptr in ash.c, + * but here we make them live in R/W memory */ struct globals_misc *ash_ptr_to_globals_misc; struct globals_memstack *ash_ptr_to_globals_memstack; struct globals_var *ash_ptr_to_globals_var; + +#else + +/* gcc -combine will see through and complain */ +/* Using alternative method which is more likely to break + * on weird architectures, compilers, linkers and so on */ +struct globals_misc *const ash_ptr_to_globals_misc __attribute__ ((section (".data"))); +struct globals_memstack *const ash_ptr_to_globals_memstack __attribute__ ((section (".data"))); +struct globals_var *const ash_ptr_to_globals_var __attribute__ ((section (".data"))); + +#endif |