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-rw-r--r--Documentation/kbuild/makefiles.txt14
-rw-r--r--arch/i386/kernel/Makefile3
-rw-r--r--arch/i386/kernel/vsyscall.lds.S1
-rw-r--r--arch/ia64/kernel/Makefile3
-rw-r--r--arch/ia64/kernel/gate.lds.S1
-rw-r--r--arch/parisc/kernel/vmlinux.lds.S1
-rw-r--r--arch/powerpc/kernel/vdso32/Makefile3
-rw-r--r--arch/powerpc/kernel/vdso32/vdso32.lds.S1
-rw-r--r--arch/powerpc/kernel/vdso64/Makefile3
-rw-r--r--arch/powerpc/kernel/vdso64/vdso64.lds.S1
-rw-r--r--arch/ppc/kernel/vmlinux.lds.S1
-rw-r--r--arch/um/kernel/dyn.lds.S1
-rw-r--r--arch/x86_64/ia32/Makefile1
-rw-r--r--arch/x86_64/ia32/vsyscall.lds1
-rw-r--r--scripts/Kbuild.include7
15 files changed, 38 insertions, 4 deletions
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.
407 The second argument is optional, and if supplied will be used 407 The second argument is optional, and if supplied will be used
408 if first argument is not supported. 408 if first argument is not supported.
409 409
410 ld-option
411 ld-option is used to check if $(CC) when used to link object files
412 supports the given option. An optional second option may be
413 specified if first option are not supported.
414
415 Example:
416 #arch/i386/kernel/Makefile
417 vsyscall-flags += $(call ld-option, -Wl$(comma)--hash-style=sysv)
418
419 In the above example vsyscall-flags will be assigned the option
420 -Wl$(comma)--hash-style=sysv if it is supported by $(CC).
421 The second argument is optional, and if supplied will be used
422 if first argument is not supported.
423
410 cc-option 424 cc-option
411 cc-option is used to check if $(CC) support a given option, and not 425 cc-option is used to check if $(CC) support a given option, and not
412 supported to use an optional second option. 426 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 $@
59 59
60export CPPFLAGS_vsyscall.lds += -P -C -U$(ARCH) 60export CPPFLAGS_vsyscall.lds += -P -C -U$(ARCH)
61 61
62vsyscall-flags = -shared -s -Wl,-soname=linux-gate.so.1 62vsyscall-flags = -shared -s -Wl,-soname=linux-gate.so.1 \
63 $(call ld-option, -Wl$(comma)--hash-style=sysv)
63SYSCFLAGS_vsyscall-sysenter.so = $(vsyscall-flags) 64SYSCFLAGS_vsyscall-sysenter.so = $(vsyscall-flags)
64SYSCFLAGS_vsyscall-int80.so = $(vsyscall-flags) 65SYSCFLAGS_vsyscall-int80.so = $(vsyscall-flags)
65 66
diff --git a/arch/i386/kernel/vsyscall.lds.S b/arch/i386/kernel/vsyscall.lds.S
index e26975fc68b6..f66cd11adb72 100644
--- a/arch/i386/kernel/vsyscall.lds.S
+++ b/arch/i386/kernel/vsyscall.lds.S
@@ -10,6 +10,7 @@ SECTIONS
10 . = VDSO_PRELINK + SIZEOF_HEADERS; 10 . = VDSO_PRELINK + SIZEOF_HEADERS;
11 11
12 .hash : { *(.hash) } :text 12 .hash : { *(.hash) } :text
13 .gnu.hash : { *(.gnu.hash) }
13 .dynsym : { *(.dynsym) } 14 .dynsym : { *(.dynsym) }
14 .dynstr : { *(.dynstr) } 15 .dynstr : { *(.dynstr) }
15 .gnu.version : { *(.gnu.version) } 16 .gnu.version : { *(.gnu.version) }
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
index 0e4553f320bf..ad8215a3c586 100644
--- a/arch/ia64/kernel/Makefile
+++ b/arch/ia64/kernel/Makefile
@@ -45,7 +45,8 @@ CPPFLAGS_gate.lds := -P -C -U$(ARCH)
45quiet_cmd_gate = GATE $@ 45quiet_cmd_gate = GATE $@
46 cmd_gate = $(CC) -nostdlib $(GATECFLAGS_$(@F)) -Wl,-T,$(filter-out FORCE,$^) -o $@ 46 cmd_gate = $(CC) -nostdlib $(GATECFLAGS_$(@F)) -Wl,-T,$(filter-out FORCE,$^) -o $@
47 47
48GATECFLAGS_gate.so = -shared -s -Wl,-soname=linux-gate.so.1 48GATECFLAGS_gate.so = -shared -s -Wl,-soname=linux-gate.so.1 \
49 $(call ld-option, -Wl$(comma)--hash-style=sysv)
49$(obj)/gate.so: $(obj)/gate.lds $(obj)/gate.o FORCE 50$(obj)/gate.so: $(obj)/gate.lds $(obj)/gate.o FORCE
50 $(call if_changed,gate) 51 $(call if_changed,gate)
51 52
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
12 . = GATE_ADDR + SIZEOF_HEADERS; 12 . = GATE_ADDR + SIZEOF_HEADERS;
13 13
14 .hash : { *(.hash) } :readable 14 .hash : { *(.hash) } :readable
15 .gnu.hash : { *(.gnu.hash) }
15 .dynsym : { *(.dynsym) } 16 .dynsym : { *(.dynsym) }
16 .dynstr : { *(.dynstr) } 17 .dynstr : { *(.dynstr) }
17 .gnu.version : { *(.gnu.version) } 18 .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
204 *(.dynstr) 204 *(.dynstr)
205 *(.dynamic) 205 *(.dynamic)
206 *(.hash) 206 *(.hash)
207 *(.gnu.hash)
207#endif 208#endif
208 } 209 }
209 210
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))
14 14
15 15
16EXTRA_CFLAGS := -shared -s -fno-common -fno-builtin 16EXTRA_CFLAGS := -shared -s -fno-common -fno-builtin
17EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso32.so.1 17EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso32.so.1 \
18 $(call ld-option, -Wl$(comma)--hash-style=sysv)
18EXTRA_AFLAGS := -D__VDSO32__ -s 19EXTRA_AFLAGS := -D__VDSO32__ -s
19 20
20obj-y += vdso32_wrapper.o 21obj-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
14{ 14{
15 . = VDSO32_LBASE + SIZEOF_HEADERS; 15 . = VDSO32_LBASE + SIZEOF_HEADERS;
16 .hash : { *(.hash) } :text 16 .hash : { *(.hash) } :text
17 .gnu.hash : { *(.gnu.hash) }
17 .dynsym : { *(.dynsym) } 18 .dynsym : { *(.dynsym) }
18 .dynstr : { *(.dynstr) } 19 .dynstr : { *(.dynstr) }
19 .gnu.version : { *(.gnu.version) } 20 .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
8obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64)) 8obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64))
9 9
10EXTRA_CFLAGS := -shared -s -fno-common -fno-builtin 10EXTRA_CFLAGS := -shared -s -fno-common -fno-builtin
11EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso64.so.1 11EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso64.so.1 \
12 $(call ld-option, -Wl$(comma)--hash-style=sysv)
12EXTRA_AFLAGS := -D__VDSO64__ -s 13EXTRA_AFLAGS := -D__VDSO64__ -s
13 14
14obj-y += vdso64_wrapper.o 15obj-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
12{ 12{
13 . = VDSO64_LBASE + SIZEOF_HEADERS; 13 . = VDSO64_LBASE + SIZEOF_HEADERS;
14 .hash : { *(.hash) } :text 14 .hash : { *(.hash) } :text
15 .gnu.hash : { *(.gnu.hash) }
15 .dynsym : { *(.dynsym) } 16 .dynsym : { *(.dynsym) }
16 .dynstr : { *(.dynstr) } 17 .dynstr : { *(.dynstr) }
17 .gnu.version : { *(.gnu.version) } 18 .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
8 . = + SIZEOF_HEADERS; 8 . = + SIZEOF_HEADERS;
9 .interp : { *(.interp) } 9 .interp : { *(.interp) }
10 .hash : { *(.hash) } 10 .hash : { *(.hash) }
11 .gnu.hash : { *(.gnu.hash) }
11 .dynsym : { *(.dynsym) } 12 .dynsym : { *(.dynsym) }
12 .dynstr : { *(.dynstr) } 13 .dynstr : { *(.dynstr) }
13 .rel.text : { *(.rel.text) } 14 .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
26 26
27 /* Read-only sections, merged into text segment: */ 27 /* Read-only sections, merged into text segment: */
28 .hash : { *(.hash) } 28 .hash : { *(.hash) }
29 .gnu.hash : { *(.gnu.hash) }
29 .dynsym : { *(.dynsym) } 30 .dynsym : { *(.dynsym) }
30 .dynstr : { *(.dynstr) } 31 .dynstr : { *(.dynstr) }
31 .gnu.version : { *(.gnu.version) } 32 .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)
23# The DSO images are built using a special linker script 23# The DSO images are built using a special linker script
24quiet_cmd_syscall = SYSCALL $@ 24quiet_cmd_syscall = SYSCALL $@
25 cmd_syscall = $(CC) -m32 -nostdlib -shared -s \ 25 cmd_syscall = $(CC) -m32 -nostdlib -shared -s \
26 $(call ld-option, -Wl$(comma)--hash-style=sysv) \
26 -Wl,-soname=linux-gate.so.1 -o $@ \ 27 -Wl,-soname=linux-gate.so.1 -o $@ \
27 -Wl,-T,$(filter-out FORCE,$^) 28 -Wl,-T,$(filter-out FORCE,$^)
28 29
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
11 . = VSYSCALL_BASE + SIZEOF_HEADERS; 11 . = VSYSCALL_BASE + SIZEOF_HEADERS;
12 12
13 .hash : { *(.hash) } :text 13 .hash : { *(.hash) } :text
14 .gnu.hash : { *(.gnu.hash) }
14 .dynsym : { *(.dynsym) } 15 .dynsym : { *(.dynsym) }
15 .dynstr : { *(.dynstr) } 16 .dynstr : { *(.dynstr) }
16 .gnu.version : { *(.gnu.version) } 17 .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 \
85cc-ifversion = $(shell if [ $(call cc-version, $(CC)) $(1) $(2) ]; then \ 85cc-ifversion = $(shell if [ $(call cc-version, $(CC)) $(1) $(2) ]; then \
86 echo $(3); fi;) 86 echo $(3); fi;)
87 87
88# ld-option
89# Usage: ldflags += $(call ld-option, -Wl$(comma)--hash-style=both)
90ld-option = $(shell if $(CC) $(1) \
91 -nostdlib -o ldtest$$$$.out -xc /dev/null \
92 > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi; \
93 rm -f ldtest$$$$.out)
94
88### 95###
89# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj= 96# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj=
90# Usage: 97# Usage:
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-09 17:27:46 -0500