From 0129a057b652b33dba6406a940af061cf0f36f79 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Sun, 30 Jul 2006 03:03:41 -0700 Subject: [PATCH] kernel-doc: ignore __devinit Ignore __devinit in function definitions so that kernel-doc won't fail on them. Signed-off-by: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- scripts/kernel-doc | 1 + 1 file changed, 1 insertion(+) (limited to 'scripts') diff --git a/scripts/kernel-doc b/scripts/kernel-doc index f9460a6218de..c9ca0c23bd91 100755 --- a/scripts/kernel-doc +++ b/scripts/kernel-doc @@ -1518,6 +1518,7 @@ sub dump_function($$) { $prototype =~ s/^asmlinkage +//; $prototype =~ s/^inline +//; $prototype =~ s/^__inline__ +//; + $prototype =~ s/__devinit +//; $prototype =~ s/^#define +//; #ak added $prototype =~ s/__attribute__ \(\([a-z,]*\)\)//; -- cgit v1.2.3 From 0b0bf7a3ccb6f0b38ead71980e79f875046047b7 Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sun, 30 Jul 2006 03:04:06 -0700 Subject: [PATCH] vDSO hash-style fix The latest toolchains can produce a new ELF section in DSOs and dynamically-linked executables. The new section ".gnu.hash" replaces ".hash", and allows for more efficient runtime symbol lookups by the dynamic linker. The new ld option --hash-style={sysv|gnu|both} controls whether to produce the old ".hash", the new ".gnu.hash", or both. In some new systems such as Fedora Core 6, gcc by default passes --hash-style=gnu to the linker, so that a standard invocation of "gcc -shared" results in producing a DSO with only ".gnu.hash". The new ".gnu.hash" sections need to be dealt with the same way as ".hash" sections in all respects; only the dynamic linker cares about their contents. To work with older dynamic linkers (i.e. preexisting releases of glibc), a binary must have the old ".hash" section. The --hash-style=both option produces binaries that a new dynamic linker can use more efficiently, but an old dynamic linker can still handle. The new section runs afoul of the custom linker scripts used to build vDSO images for the kernel. On ia64, the failure mode for this is a boot-time panic because the vDSO's PT_IA_64_UNWIND segment winds up ill-formed. This patch addresses the problem in two ways. First, it mentions ".gnu.hash" in all the linker scripts alongside ".hash". This produces correct vDSO images with --hash-style=sysv (or old tools), with --hash-style=gnu, or with --hash-style=both. Second, it passes the --hash-style=sysv option when building the vDSO images, so that ".gnu.hash" is not actually produced. This is the most conservative choice for compatibility with any old userland. There is some concern that some ancient glibc builds (though not any known old production system) might choke on --hash-style=both binaries. The optimizations provided by the new style of hash section do not really matter for a DSO with a tiny number of symbols, as the vDSO has. If someone wants to use =gnu or =both for their vDSO builds and worry less about that compatibility, just change the option and the linker script changes will make any choice work fine. Signed-off-by: Roland McGrath Cc: "Luck, Tony" Cc: Kyle McMartin Cc: Paul Mackerras Cc: Benjamin Herrenschmidt Cc: Jeff Dike Cc: Andi Kleen Cc: Sam Ravnborg Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/kbuild/makefiles.txt | 14 ++++++++++++++ arch/i386/kernel/Makefile | 3 ++- arch/i386/kernel/vsyscall.lds.S | 1 + arch/ia64/kernel/Makefile | 3 ++- arch/ia64/kernel/gate.lds.S | 1 + arch/parisc/kernel/vmlinux.lds.S | 1 + arch/powerpc/kernel/vdso32/Makefile | 3 ++- arch/powerpc/kernel/vdso32/vdso32.lds.S | 1 + arch/powerpc/kernel/vdso64/Makefile | 3 ++- arch/powerpc/kernel/vdso64/vdso64.lds.S | 1 + arch/ppc/kernel/vmlinux.lds.S | 1 + arch/um/kernel/dyn.lds.S | 1 + arch/x86_64/ia32/Makefile | 1 + arch/x86_64/ia32/vsyscall.lds | 1 + scripts/Kbuild.include | 7 +++++++ 15 files changed, 38 insertions(+), 4 deletions(-) (limited to 'scripts') diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt index 14ef3868a328..0706699c9da9 100644 --- a/Documentation/kbuild/makefiles.txt +++ b/Documentation/kbuild/makefiles.txt @@ -407,6 +407,20 @@ more details, with real examples. The second argument is optional, and if supplied will be used if first argument is not supported. + ld-option + ld-option is used to check if $(CC) when used to link object files + supports the given option. An optional second option may be + specified if first option are not supported. + + Example: + #arch/i386/kernel/Makefile + vsyscall-flags += $(call ld-option, -Wl$(comma)--hash-style=sysv) + + In the above example vsyscall-flags will be assigned the option + -Wl$(comma)--hash-style=sysv if it is supported by $(CC). + The second argument is optional, and if supplied will be used + if first argument is not supported. + cc-option cc-option is used to check if $(CC) support a given option, and not supported to use an optional second option. diff --git a/arch/i386/kernel/Makefile b/arch/i386/kernel/Makefile index 1b452a1665c4..ab98fc21a541 100644 --- a/arch/i386/kernel/Makefile +++ b/arch/i386/kernel/Makefile @@ -59,7 +59,8 @@ quiet_cmd_syscall = SYSCALL $@ export CPPFLAGS_vsyscall.lds += -P -C -U$(ARCH) -vsyscall-flags = -shared -s -Wl,-soname=linux-gate.so.1 +vsyscall-flags = -shared -s -Wl,-soname=linux-gate.so.1 \ + $(call ld-option, -Wl$(comma)--hash-style=sysv) SYSCFLAGS_vsyscall-sysenter.so = $(vsyscall-flags) SYSCFLAGS_vsyscall-int80.so = $(vsyscall-flags) diff --git a/arch/i386/kernel/vsyscall.lds.S b/arch/i386/kernel/vsyscall.lds.S index e26975fc68b6..f66cd11adb72 100644 --- a/arch/i386/kernel/vsyscall.lds.S +++ b/arch/i386/kernel/vsyscall.lds.S @@ -10,6 +10,7 @@ SECTIONS . = VDSO_PRELINK + SIZEOF_HEADERS; .hash : { *(.hash) } :text + .gnu.hash : { *(.gnu.hash) } .dynsym : { *(.dynsym) } .dynstr : { *(.dynstr) } .gnu.version : { *(.gnu.version) } diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile index 0e4553f320bf..ad8215a3c586 100644 --- a/arch/ia64/kernel/Makefile +++ b/arch/ia64/kernel/Makefile @@ -45,7 +45,8 @@ CPPFLAGS_gate.lds := -P -C -U$(ARCH) quiet_cmd_gate = GATE $@ cmd_gate = $(CC) -nostdlib $(GATECFLAGS_$(@F)) -Wl,-T,$(filter-out FORCE,$^) -o $@ -GATECFLAGS_gate.so = -shared -s -Wl,-soname=linux-gate.so.1 +GATECFLAGS_gate.so = -shared -s -Wl,-soname=linux-gate.so.1 \ + $(call ld-option, -Wl$(comma)--hash-style=sysv) $(obj)/gate.so: $(obj)/gate.lds $(obj)/gate.o FORCE $(call if_changed,gate) diff --git a/arch/ia64/kernel/gate.lds.S b/arch/ia64/kernel/gate.lds.S index cc35cddfd4cf..6d198339bf85 100644 --- a/arch/ia64/kernel/gate.lds.S +++ b/arch/ia64/kernel/gate.lds.S @@ -12,6 +12,7 @@ SECTIONS . = GATE_ADDR + SIZEOF_HEADERS; .hash : { *(.hash) } :readable + .gnu.hash : { *(.gnu.hash) } .dynsym : { *(.dynsym) } .dynstr : { *(.dynstr) } .gnu.version : { *(.gnu.version) } diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S index 9989495a51dd..b3677fc8eef5 100644 --- a/arch/parisc/kernel/vmlinux.lds.S +++ b/arch/parisc/kernel/vmlinux.lds.S @@ -204,6 +204,7 @@ SECTIONS *(.dynstr) *(.dynamic) *(.hash) + *(.gnu.hash) #endif } diff --git a/arch/powerpc/kernel/vdso32/Makefile b/arch/powerpc/kernel/vdso32/Makefile index 8a3bed5f143a..3726358faae8 100644 --- a/arch/powerpc/kernel/vdso32/Makefile +++ b/arch/powerpc/kernel/vdso32/Makefile @@ -14,7 +14,8 @@ obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32)) EXTRA_CFLAGS := -shared -s -fno-common -fno-builtin -EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso32.so.1 +EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso32.so.1 \ + $(call ld-option, -Wl$(comma)--hash-style=sysv) EXTRA_AFLAGS := -D__VDSO32__ -s obj-y += vdso32_wrapper.o diff --git a/arch/powerpc/kernel/vdso32/vdso32.lds.S b/arch/powerpc/kernel/vdso32/vdso32.lds.S index f4bad720cb0a..6187af2d54c3 100644 --- a/arch/powerpc/kernel/vdso32/vdso32.lds.S +++ b/arch/powerpc/kernel/vdso32/vdso32.lds.S @@ -14,6 +14,7 @@ SECTIONS { . = VDSO32_LBASE + SIZEOF_HEADERS; .hash : { *(.hash) } :text + .gnu.hash : { *(.gnu.hash) } .dynsym : { *(.dynsym) } .dynstr : { *(.dynstr) } .gnu.version : { *(.gnu.version) } diff --git a/arch/powerpc/kernel/vdso64/Makefile b/arch/powerpc/kernel/vdso64/Makefile index ab39988452cc..43af9b2a6f3b 100644 --- a/arch/powerpc/kernel/vdso64/Makefile +++ b/arch/powerpc/kernel/vdso64/Makefile @@ -8,7 +8,8 @@ targets := $(obj-vdso64) vdso64.so obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64)) EXTRA_CFLAGS := -shared -s -fno-common -fno-builtin -EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso64.so.1 +EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso64.so.1 \ + $(call ld-option, -Wl$(comma)--hash-style=sysv) EXTRA_AFLAGS := -D__VDSO64__ -s obj-y += vdso64_wrapper.o diff --git a/arch/powerpc/kernel/vdso64/vdso64.lds.S b/arch/powerpc/kernel/vdso64/vdso64.lds.S index 4bdf224464ab..4a2b6dc0960c 100644 --- a/arch/powerpc/kernel/vdso64/vdso64.lds.S +++ b/arch/powerpc/kernel/vdso64/vdso64.lds.S @@ -12,6 +12,7 @@ SECTIONS { . = VDSO64_LBASE + SIZEOF_HEADERS; .hash : { *(.hash) } :text + .gnu.hash : { *(.gnu.hash) } .dynsym : { *(.dynsym) } .dynstr : { *(.dynstr) } .gnu.version : { *(.gnu.version) } diff --git a/arch/ppc/kernel/vmlinux.lds.S b/arch/ppc/kernel/vmlinux.lds.S index 09c6525cfa61..095fd3323323 100644 --- a/arch/ppc/kernel/vmlinux.lds.S +++ b/arch/ppc/kernel/vmlinux.lds.S @@ -8,6 +8,7 @@ SECTIONS . = + SIZEOF_HEADERS; .interp : { *(.interp) } .hash : { *(.hash) } + .gnu.hash : { *(.gnu.hash) } .dynsym : { *(.dynsym) } .dynstr : { *(.dynstr) } .rel.text : { *(.rel.text) } diff --git a/arch/um/kernel/dyn.lds.S b/arch/um/kernel/dyn.lds.S index 2517ecb8bf27..68ed24df5c8f 100644 --- a/arch/um/kernel/dyn.lds.S +++ b/arch/um/kernel/dyn.lds.S @@ -26,6 +26,7 @@ SECTIONS /* Read-only sections, merged into text segment: */ .hash : { *(.hash) } + .gnu.hash : { *(.gnu.hash) } .dynsym : { *(.dynsym) } .dynstr : { *(.dynstr) } .gnu.version : { *(.gnu.version) } diff --git a/arch/x86_64/ia32/Makefile b/arch/x86_64/ia32/Makefile index 62bc5f56da9e..cdae36435e21 100644 --- a/arch/x86_64/ia32/Makefile +++ b/arch/x86_64/ia32/Makefile @@ -23,6 +23,7 @@ targets := $(foreach F,sysenter syscall,vsyscall-$F.o vsyscall-$F.so) # The DSO images are built using a special linker script quiet_cmd_syscall = SYSCALL $@ cmd_syscall = $(CC) -m32 -nostdlib -shared -s \ + $(call ld-option, -Wl$(comma)--hash-style=sysv) \ -Wl,-soname=linux-gate.so.1 -o $@ \ -Wl,-T,$(filter-out FORCE,$^) diff --git a/arch/x86_64/ia32/vsyscall.lds b/arch/x86_64/ia32/vsyscall.lds index f2e75ed4c6c7..1dc86ff5bcb9 100644 --- a/arch/x86_64/ia32/vsyscall.lds +++ b/arch/x86_64/ia32/vsyscall.lds @@ -11,6 +11,7 @@ SECTIONS . = VSYSCALL_BASE + SIZEOF_HEADERS; .hash : { *(.hash) } :text + .gnu.hash : { *(.gnu.hash) } .dynsym : { *(.dynsym) } .dynstr : { *(.dynstr) } .gnu.version : { *(.gnu.version) } diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include index 2180c88cfe89..f01132263535 100644 --- a/scripts/Kbuild.include +++ b/scripts/Kbuild.include @@ -85,6 +85,13 @@ cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh \ cc-ifversion = $(shell if [ $(call cc-version, $(CC)) $(1) $(2) ]; then \ echo $(3); fi;) +# ld-option +# Usage: ldflags += $(call ld-option, -Wl$(comma)--hash-style=both) +ld-option = $(shell if $(CC) $(1) \ + -nostdlib -o ldtest$$$$.out -xc /dev/null \ + > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi; \ + rm -f ldtest$$$$.out) + ### # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj= # Usage: -- cgit v1.2.3 From fb33d81613a4e3e27972a65b6e566de50a447d33 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sun, 9 Jul 2006 16:26:07 +0200 Subject: kbuild: improve error from file2alias The original errormessage was just plain unreadable. Sample error message after this update (not for real - I provoked it): FATAL: drivers/net/s2io: sizeof(struct pci_device_id)=33 is not a modulo of the size of section __mod_pci_device_table=160. Fix definition of struct pci_device_id in mod_devicetable.h Before a warning was generated - this is now a fatal error. Signed-off-by: Sam Ravnborg --- scripts/mod/file2alias.c | 62 +++++++++++++++++++++++++++++++++--------------- 1 file changed, 43 insertions(+), 19 deletions(-) (limited to 'scripts') diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c index 37f67c23e11b..44312926b849 100644 --- a/scripts/mod/file2alias.c +++ b/scripts/mod/file2alias.c @@ -52,6 +52,23 @@ do { \ sprintf(str + strlen(str), "*"); \ } while(0) +/** + * Check that sizeof(device_id type) are consistent with size of section + * in .o file. If in-consistent then userspace and kernel does not agree + * on actual size which is a bug. + **/ +static void device_id_size_check(const char *modname, const char *device_id, + unsigned long size, unsigned long id_size) +{ + if (size % id_size || size < id_size) { + fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo " + "of the size of section __mod_%s_device_table=%lu.\n" + "Fix definition of struct %s_device_id " + "in mod_devicetable.h\n", + modname, device_id, id_size, device_id, size, device_id); + } +} + /* USB is special because the bcdDevice can be matched against a numeric range */ /* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipN" */ static void do_usb_entry(struct usb_device_id *id, @@ -152,10 +169,8 @@ static void do_usb_table(void *symval, unsigned long size, unsigned int i; const unsigned long id_size = sizeof(struct usb_device_id); - if (size % id_size || size < id_size) { - warn("%s ids %lu bad size " - "(each on %lu)\n", mod->name, size, id_size); - } + device_id_size_check(mod->name, "usb", size, id_size); + /* Leave last one: it's the terminator. */ size -= id_size; @@ -434,6 +449,7 @@ static inline int sym_is(const char *symbol, const char *name) static void do_table(void *symval, unsigned long size, unsigned long id_size, + const char *device_id, void *function, struct module *mod) { @@ -441,10 +457,7 @@ static void do_table(void *symval, unsigned long size, char alias[500]; int (*do_entry)(const char *, void *entry, char *alias) = function; - if (size % id_size || size < id_size) { - warn("%s ids %lu bad size " - "(each on %lu)\n", mod->name, size, id_size); - } + device_id_size_check(mod->name, device_id, size, id_size); /* Leave last one: it's the terminator. */ size -= id_size; @@ -476,40 +489,51 @@ void handle_moddevtable(struct module *mod, struct elf_info *info, + sym->st_value; if (sym_is(symname, "__mod_pci_device_table")) - do_table(symval, sym->st_size, sizeof(struct pci_device_id), + do_table(symval, sym->st_size, + sizeof(struct pci_device_id), "pci", do_pci_entry, mod); else if (sym_is(symname, "__mod_usb_device_table")) /* special case to handle bcdDevice ranges */ do_usb_table(symval, sym->st_size, mod); else if (sym_is(symname, "__mod_ieee1394_device_table")) - do_table(symval, sym->st_size, sizeof(struct ieee1394_device_id), + do_table(symval, sym->st_size, + sizeof(struct ieee1394_device_id), "ieee1394", do_ieee1394_entry, mod); else if (sym_is(symname, "__mod_ccw_device_table")) - do_table(symval, sym->st_size, sizeof(struct ccw_device_id), + do_table(symval, sym->st_size, + sizeof(struct ccw_device_id), "ccw", do_ccw_entry, mod); else if (sym_is(symname, "__mod_serio_device_table")) - do_table(symval, sym->st_size, sizeof(struct serio_device_id), + do_table(symval, sym->st_size, + sizeof(struct serio_device_id), "serio", do_serio_entry, mod); else if (sym_is(symname, "__mod_pnp_device_table")) - do_table(symval, sym->st_size, sizeof(struct pnp_device_id), + do_table(symval, sym->st_size, + sizeof(struct pnp_device_id), "pnp", do_pnp_entry, mod); else if (sym_is(symname, "__mod_pnp_card_device_table")) - do_table(symval, sym->st_size, sizeof(struct pnp_card_device_id), + do_table(symval, sym->st_size, + sizeof(struct pnp_card_device_id), "pnp_card", do_pnp_card_entry, mod); else if (sym_is(symname, "__mod_pcmcia_device_table")) - do_table(symval, sym->st_size, sizeof(struct pcmcia_device_id), + do_table(symval, sym->st_size, + sizeof(struct pcmcia_device_id), "pcmcia", do_pcmcia_entry, mod); else if (sym_is(symname, "__mod_of_device_table")) - do_table(symval, sym->st_size, sizeof(struct of_device_id), + do_table(symval, sym->st_size, + sizeof(struct of_device_id), "of", do_of_entry, mod); else if (sym_is(symname, "__mod_vio_device_table")) - do_table(symval, sym->st_size, sizeof(struct vio_device_id), + do_table(symval, sym->st_size, + sizeof(struct vio_device_id), "vio", do_vio_entry, mod); else if (sym_is(symname, "__mod_i2c_device_table")) - do_table(symval, sym->st_size, sizeof(struct i2c_device_id), + do_table(symval, sym->st_size, + sizeof(struct i2c_device_id), "i2c", do_i2c_entry, mod); else if (sym_is(symname, "__mod_input_device_table")) - do_table(symval, sym->st_size, sizeof(struct input_device_id), + do_table(symval, sym->st_size, + sizeof(struct input_device_id), "input", do_input_entry, mod); } -- cgit v1.2.3 From 0463f3c7a353e4d082e825f01e2862ca0f7b34ce Mon Sep 17 00:00:00 2001 From: Dave Jones Date: Thu, 13 Jul 2006 00:44:15 -0400 Subject: kbuild: fix typo in modpost Reported by a Fedora user when they tried to build some out of tree module.. Signed-off-by: Dave Jones Signed-off-by: Sam Ravnborg --- scripts/Makefile.modpost | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'scripts') diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost index a49550205dcc..0a64688c2b5d 100644 --- a/scripts/Makefile.modpost +++ b/scripts/Makefile.modpost @@ -40,7 +40,7 @@ include scripts/Kbuild.include include scripts/Makefile.lib kernelsymfile := $(objtree)/Module.symvers -modulesymfile := $(KBUILD_EXTMOD)/Modules.symvers +modulesymfile := $(KBUILD_EXTMOD)/Module.symvers # Step 1), find all modules listed in $(MODVERDIR)/ __modules := $(sort $(shell grep -h '\.ko' /dev/null $(wildcard $(MODVERDIR)/*.mod))) -- cgit v1.2.3 From 002d27b1b70f6d574c816ef265147704c4e951f1 Mon Sep 17 00:00:00 2001 From: Roman Zippel Date: Thu, 13 Jul 2006 13:22:38 +0200 Subject: kconfig: correct oldconfig for unset choice options oldconfig currently ignores unset choice options and doesn't ask for them. Correct the SYMBOL_DEF_USER flag of the choice symbol to be only set if it's set for all values. Signed-off-by: Roman Zippel Signed-off-by: Sam Ravnborg --- scripts/kconfig/confdata.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'scripts') diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c index 2ee48c377b66..a69d8acbf274 100644 --- a/scripts/kconfig/confdata.c +++ b/scripts/kconfig/confdata.c @@ -357,7 +357,7 @@ int conf_read(const char *name) for (e = prop->expr; e; e = e->left.expr) if (e->right.sym->visible != no) flags &= e->right.sym->flags; - sym->flags |= flags & SYMBOL_DEF_USER; + sym->flags &= flags | ~SYMBOL_DEF_USER; } sym_change_count += conf_warnings || conf_unsaved; -- cgit v1.2.3 From 8eb3afe0e95e5d45efbe58996fe90982c740565d Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sun, 23 Jul 2006 19:49:45 +0200 Subject: kbuild: always use $(CC) for $(call cc-version) The possibility to specify an optional parameter did not work out as expected and it was not used - so remove the possibility. Signed-off-by: Sam Ravnborg --- scripts/Kbuild.include | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'scripts') diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include index f01132263535..bb19c1561f1e 100644 --- a/scripts/Kbuild.include +++ b/scripts/Kbuild.include @@ -77,8 +77,7 @@ cc-option-align = $(subst -functions=0,,\ # cc-version # Usage gcc-ver := $(call cc-version, $(CC)) -cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh \ - $(if $(1), $(1), $(CC))) +cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh $(CC)) # cc-ifversion # Usage: EXTRA_CFLAGS += $(call cc-ifversion, -lt, 0402, -O1) -- cgit v1.2.3