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Message-ID: <20230203182540.7linqqtr3tlrbfe7@skbuf>
Date: Fri, 3 Feb 2023 20:25:40 +0200
From: Vladimir Oltean <olteanv@...il.com>
To: Josh Poimboeuf <jpoimboe@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>, linux-kernel@...r.kernel.org,
linux-tip-commits@...r.kernel.org, Ian Rogers <irogers@...gle.com>,
x86@...nel.org, netdev@...r.kernel.org
Subject: Re: [tip: objtool/core] objtool: Fix HOSTCC flag usage
On Wed, Feb 01, 2023 at 09:36:37AM -0800, Josh Poimboeuf wrote:
> On Wed, Feb 01, 2023 at 05:02:16PM +0000, Mark Rutland wrote:
> > Hi,
> >
> > I just spotted this breaks cross-compiling; details below.
>
> Thanks, we'll fix it up with
>
> diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile
> index 29a8cd7449bf..83b100c1e7f6 100644
> --- a/tools/objtool/Makefile
> +++ b/tools/objtool/Makefile
> @@ -36,7 +36,7 @@ OBJTOOL_CFLAGS := -Werror $(WARNINGS) $(KBUILD_HOSTCFLAGS) -g $(INCLUDES) $(LIBE
> OBJTOOL_LDFLAGS := $(LIBELF_LIBS) $(LIBSUBCMD) $(KBUILD_HOSTLDFLAGS)
>
> # Allow old libelf to be used:
> -elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr)
> +elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(HOSTCC) $(OBJTOOL_CFLAGS) -x c -E - | grep elf_getshdr)
> OBJTOOL_CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED)
>
> # Always want host compilation.
Profiting off of the occasion to point out that cross-compiling with
CONFIG_DEBUG_INFO_BTF=y is also broken (it builds the resolve_btfids
tool):
I source this script when cross-compiling, which has worked up until now:
#!/bin/bash
export TOPDIR=$(cd "$(dirname "${BASH_SOURCE[0]}" )" && pwd)
export PATH="${TOPDIR}/bin:$PATH"
export ARCH="arm64"
export CROSS_COMPILE="aarch64-none-linux-gnu-"
export SYSROOT="${TOPDIR}/sysroot"
export CC="aarch64-none-linux-gnu-gcc"
export CXX="aarch64-none-linux-gnu-g++"
export LDFLAGS="-L${SYSROOT}/usr/lib -L${SYSROOT}/usr/local/lib"
export CFLAGS="-I${SYSROOT}/usr/include -I${SYSROOT}/usr/local/include"
export CFLAGS="${CFLAGS} -Wno-format-nonliteral"
export KBUILD_OUTPUT="output-arm64"
Before reverting this patch, the build fails like this:
$ make -j 8 Image.gz dtbs modules W=1 C=1
make[1]: Entering directory '/opt/net-next/output-arm64'
SYNC include/config/auto.conf.cmd
GEN Makefile
GEN Makefile
DESCEND bpf/resolve_btfids
CC scripts/mod/empty.o
CC scripts/mod/devicetable-offsets.s
CHECK ../scripts/mod/empty.c
INSTALL libsubcmd_headers
MKELF scripts/mod/elfconfig.h
HOSTCC scripts/mod/modpost.o
HOSTCC scripts/mod/file2alias.o
HOSTCC scripts/mod/sumversion.o
CC /opt/net-next/output-arm64/tools/bpf/resolve_btfids/main.o
CC /opt/net-next/output-arm64/tools/bpf/resolve_btfids/rbtree.o
CC /opt/net-next/output-arm64/tools/bpf/resolve_btfids/string.o
In file included from /opt/net-next/tools/include/linux/rbtree_augmented.h:19,
from ../../lib/rbtree.c:12:
/opt/net-next/tools/include/linux/rbtree.h: In function ‘rb_link_node’:
/opt/net-next/tools/include/linux/rbtree.h:70:42: error: ‘NULL’ undeclared (first use in this function)
70 | node->rb_left = node->rb_right = NULL;
| ^~~~
/opt/net-next/tools/include/linux/rbtree.h:21:1: note: ‘NULL’ is defined in header ‘<stddef.h>’; did you forget to ‘#include <stddef.h>’?
20 | #include <linux/kernel.h>
+++ |+#include <stddef.h>
21 | #include <linux/stddef.h>
/opt/net-next/tools/include/linux/rbtree.h:70:42: note: each undeclared identifier is reported only once for each function it appears in
70 | node->rb_left = node->rb_right = NULL;
| ^~~~
/opt/net-next/tools/include/linux/rbtree.h: At top level:
/opt/net-next/tools/include/linux/rbtree.h:131:43: error: unknown type name ‘bool’
131 | bool leftmost)
| ^~~~
/opt/net-next/tools/include/linux/rbtree.h:21:1: note: ‘bool’ is defined in header ‘<stdbool.h>’; did you forget to ‘#include <stdbool.h>’?
20 | #include <linux/kernel.h>
+++ |+#include <stdbool.h>
21 | #include <linux/stddef.h>
/opt/net-next/tools/include/linux/rbtree.h:179:15: error: unknown type name ‘bool’
179 | bool (*less)(struct rb_node *, const struct rb_node *))
| ^~~~
/opt/net-next/tools/include/linux/rbtree.h:179:15: note: ‘bool’ is defined in header ‘<stdbool.h>’; did you forget to ‘#include <stdbool.h>’?
/opt/net-next/tools/include/linux/rbtree.h:207:8: error: unknown type name ‘bool’
207 | bool (*less)(struct rb_node *, const struct rb_node *))
| ^~~~
/opt/net-next/tools/include/linux/rbtree.h:207:8: note: ‘bool’ is defined in header ‘<stdbool.h>’; did you forget to ‘#include <stdbool.h>’?
/opt/net-next/tools/include/linux/rbtree.h: In function ‘rb_find_add’:
/opt/net-next/tools/include/linux/rbtree.h:238:34: error: ‘NULL’ undeclared (first use in this function)
238 | struct rb_node *parent = NULL;
| ^~~~
/opt/net-next/tools/include/linux/rbtree.h:238:34: note: ‘NULL’ is defined in header ‘<stddef.h>’; did you forget to ‘#include <stddef.h>’?
/opt/net-next/tools/include/linux/rbtree.h: In function ‘rb_find’:
/opt/net-next/tools/include/linux/rbtree.h:283:16: error: ‘NULL’ undeclared (first use in this function)
283 | return NULL;
| ^~~~
/opt/net-next/tools/include/linux/rbtree.h:283:16: note: ‘NULL’ is defined in header ‘<stddef.h>’; did you forget to ‘#include <stddef.h>’?
/opt/net-next/tools/include/linux/rbtree.h: In function ‘rb_find_first’:
/opt/net-next/tools/include/linux/rbtree.h:299:33: error: ‘NULL’ undeclared (first use in this function)
299 | struct rb_node *match = NULL;
| ^~~~
/opt/net-next/tools/include/linux/rbtree.h:299:33: note: ‘NULL’ is defined in header ‘<stddef.h>’; did you forget to ‘#include <stddef.h>’?
/opt/net-next/tools/include/linux/rbtree.h: In function ‘rb_next_match’:
/opt/net-next/tools/include/linux/rbtree.h:330:24: error: ‘NULL’ undeclared (first use in this function)
330 | node = NULL;
| ^~~~
/opt/net-next/tools/include/linux/rbtree.h:330:24: note: ‘NULL’ is defined in header ‘<stddef.h>’; did you forget to ‘#include <stddef.h>’?
In file included from ../../lib/rbtree.c:12:
/opt/net-next/tools/include/linux/rbtree_augmented.h: At top level:
/opt/net-next/tools/include/linux/rbtree_augmented.h:57:57: error: unknown type name ‘bool’
57 | struct rb_root_cached *root, bool newleft,
| ^~~~
/opt/net-next/tools/include/linux/rbtree_augmented.h:20:1: note: ‘bool’ is defined in header ‘<stdbool.h>’; did you forget to ‘#include <stdbool.h>’?
19 | #include <linux/rbtree.h>
+++ |+#include <stdbool.h>
20 |
/opt/net-next/tools/include/linux/rbtree_augmented.h: In function ‘__rb_erase_augmented’:
/opt/net-next/tools/include/linux/rbtree_augmented.h:208:37: error: ‘NULL’ undeclared (first use in this function)
208 | rebalance = NULL;
| ^~~~
/opt/net-next/tools/include/linux/rbtree_augmented.h:20:1: note: ‘NULL’ is defined in header ‘<stddef.h>’; did you forget to ‘#include <stddef.h>’?
19 | #include <linux/rbtree.h>
+++ |+#include <stddef.h>
20 |
../../lib/rbtree.c: In function ‘__rb_insert’:
../../lib/rbtree.c:90:16: error: ‘true’ undeclared (first use in this function)
90 | while (true) {
| ^~~~
../../lib/rbtree.c:14:1: note: ‘true’ is defined in header ‘<stdbool.h>’; did you forget to ‘#include <stdbool.h>’?
13 | #include <linux/export.h>
+++ |+#include <stdbool.h>
14 |
../../lib/rbtree.c:100:51: error: ‘NULL’ undeclared (first use in this function)
100 | rb_set_parent_color(node, NULL, RB_BLACK);
| ^~~~
../../lib/rbtree.c:14:1: note: ‘NULL’ is defined in header ‘<stddef.h>’; did you forget to ‘#include <stddef.h>’?
13 | #include <linux/export.h>
+++ |+#include <stddef.h>
14 |
../../lib/rbtree.c: In function ‘____rb_erase_color’:
../../lib/rbtree.c:230:32: error: ‘NULL’ undeclared (first use in this function)
230 | struct rb_node *node = NULL, *sibling, *tmp1, *tmp2;
| ^~~~
../../lib/rbtree.c:230:32: note: ‘NULL’ is defined in header ‘<stddef.h>’; did you forget to ‘#include <stddef.h>’?
../../lib/rbtree.c:232:16: error: ‘true’ undeclared (first use in this function)
232 | while (true) {
| ^~~~
../../lib/rbtree.c:232:16: note: ‘true’ is defined in header ‘<stdbool.h>’; did you forget to ‘#include <stdbool.h>’?
../../lib/rbtree.c: In function ‘rb_first’:
../../lib/rbtree.c:468:24: error: ‘NULL’ undeclared (first use in this function)
468 | return NULL;
| ^~~~
../../lib/rbtree.c:468:24: note: ‘NULL’ is defined in header ‘<stddef.h>’; did you forget to ‘#include <stddef.h>’?
../../lib/rbtree.c: In function ‘rb_last’:
../../lib/rbtree.c:480:24: error: ‘NULL’ undeclared (first use in this function)
480 | return NULL;
| ^~~~
../../lib/rbtree.c:480:24: note: ‘NULL’ is defined in header ‘<stddef.h>’; did you forget to ‘#include <stddef.h>’?
../../lib/rbtree.c: In function ‘rb_next’:
../../lib/rbtree.c:491:24: error: ‘NULL’ undeclared (first use in this function)
491 | return NULL;
| ^~~~
../../lib/rbtree.c:491:24: note: ‘NULL’ is defined in header ‘<stddef.h>’; did you forget to ‘#include <stddef.h>’?
../../lib/rbtree.c: In function ‘rb_prev’:
../../lib/rbtree.c:522:24: error: ‘NULL’ undeclared (first use in this function)
522 | return NULL;
| ^~~~
../../lib/rbtree.c:522:24: note: ‘NULL’ is defined in header ‘<stddef.h>’; did you forget to ‘#include <stddef.h>’?
../../lib/rbtree.c: In function ‘rb_next_postorder’:
../../lib/rbtree.c:577:24: error: ‘NULL’ undeclared (first use in this function)
577 | return NULL;
| ^~~~
../../lib/rbtree.c:577:24: note: ‘NULL’ is defined in header ‘<stddef.h>’; did you forget to ‘#include <stddef.h>’?
../../lib/rbtree.c: In function ‘rb_first_postorder’:
../../lib/rbtree.c:594:24: error: ‘NULL’ undeclared (first use in this function)
594 | return NULL;
| ^~~~
../../lib/rbtree.c:594:24: note: ‘NULL’ is defined in header ‘<stddef.h>’; did you forget to ‘#include <stddef.h>’?
../../lib/string.c:48:30: error: unknown type name ‘bool’
48 | int strtobool(const char *s, bool *res)
| ^~~~
../../lib/string.c:21:1: note: ‘bool’ is defined in header ‘<stdbool.h>’; did you forget to ‘#include <stdbool.h>’?
20 | #include <linux/ctype.h>
+++ |+#include <stdbool.h>
21 | #include <linux/compiler.h>
../../lib/string.c:172:33: error: unknown type name ‘u8’
172 | static void *check_bytes8(const u8 *start, u8 value, unsigned int bytes)
| ^~
../../lib/string.c:172:44: error: unknown type name ‘u8’
172 | static void *check_bytes8(const u8 *start, u8 value, unsigned int bytes)
| ^~
../../lib/string.c: In function ‘memchr_inv’:
../../lib/string.c:194:9: error: unknown type name ‘u8’
194 | u8 value = c;
| ^~
../../lib/string.c:195:9: error: unknown type name ‘u64’
195 | u64 value64;
| ^~~
../../lib/string.c:199:24: warning: implicit declaration of function ‘check_bytes8’ [-Wimplicit-function-declaration]
199 | return check_bytes8(start, value, bytes);
| ^~~~~~~~~~~~
../../lib/string.c:199:24: warning: returning ‘int’ from a function with return type ‘void *’ makes pointer from integer without a cast [-Wint-conversion]
199 | return check_bytes8(start, value, bytes);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../lib/string.c:204:28: warning: left shift count >= width of type [-Wshift-count-overflow]
204 | value64 |= value64 << 32;
| ^~
../../lib/string.c:208:17: error: unknown type name ‘u8’
208 | u8 *r;
| ^~
../../lib/string.c:211:19: warning: assignment to ‘int *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
211 | r = check_bytes8(start, value, prefix);
| ^
../../lib/string.c:221:23: error: ‘u64’ undeclared (first use in this function)
221 | if (*(u64 *)start != value64)
| ^~~
../../lib/string.c:221:23: note: each undeclared identifier is reported only once for each function it appears in
../../lib/string.c:221:28: error: expected expression before ‘)’ token
221 | if (*(u64 *)start != value64)
| ^
../../lib/string.c:222:32: warning: returning ‘int’ from a function with return type ‘void *’ makes pointer from integer without a cast [-Wint-conversion]
222 | return check_bytes8(start, value, 8);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../lib/string.c:227:16: warning: returning ‘int’ from a function with return type ‘void *’ makes pointer from integer without a cast [-Wint-conversion]
227 | return check_bytes8(start, value, bytes % 8);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
make[4]: *** [Build:9: /opt/net-next/output-arm64/tools/bpf/resolve_btfids/rbtree.o] Error 1
make[4]: *** Waiting for unfinished jobs....
make[4]: *** [Build:9: /opt/net-next/output-arm64/tools/bpf/resolve_btfids/string.o] Error 1
In file included from main.c:73:
/opt/net-next/tools/include/linux/rbtree.h:131:43: error: unknown type name ‘bool’
131 | bool leftmost)
| ^~~~
/opt/net-next/tools/include/linux/rbtree.h:21:1: note: ‘bool’ is defined in header ‘<stdbool.h>’; did you forget to ‘#include <stdbool.h>’?
20 | #include <linux/kernel.h>
+++ |+#include <stdbool.h>
21 | #include <linux/stddef.h>
/opt/net-next/tools/include/linux/rbtree.h:179:15: error: unknown type name ‘bool’
179 | bool (*less)(struct rb_node *, const struct rb_node *))
| ^~~~
/opt/net-next/tools/include/linux/rbtree.h:179:15: note: ‘bool’ is defined in header ‘<stdbool.h>’; did you forget to ‘#include <stdbool.h>’?
/opt/net-next/tools/include/linux/rbtree.h:207:8: error: unknown type name ‘bool’
207 | bool (*less)(struct rb_node *, const struct rb_node *))
| ^~~~
/opt/net-next/tools/include/linux/rbtree.h:207:8: note: ‘bool’ is defined in header ‘<stdbool.h>’; did you forget to ‘#include <stdbool.h>’?
In file included from main.c:75:
/opt/net-next/tools/include/linux/err.h:35:35: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘ERR_PTR’
35 | static inline void * __must_check ERR_PTR(long error_)
| ^~~~~~~
/opt/net-next/tools/include/linux/err.h:40:33: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘PTR_ERR’
40 | static inline long __must_check PTR_ERR(__force const void *ptr)
| ^~~~~~~
/opt/net-next/tools/include/linux/err.h:45:15: error: unknown type name ‘bool’
45 | static inline bool __must_check IS_ERR(__force const void *ptr)
| ^~~~
/opt/net-next/tools/include/linux/err.h:45:33: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘IS_ERR’
45 | static inline bool __must_check IS_ERR(__force const void *ptr)
| ^~~~~~
/opt/net-next/tools/include/linux/err.h:50:15: error: unknown type name ‘bool’
50 | static inline bool __must_check IS_ERR_OR_NULL(__force const void *ptr)
| ^~~~
/opt/net-next/tools/include/linux/err.h:50:33: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘IS_ERR_OR_NULL’
50 | static inline bool __must_check IS_ERR_OR_NULL(__force const void *ptr)
| ^~~~~~~~~~~~~~
/opt/net-next/tools/include/linux/err.h:55:32: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘PTR_ERR_OR_ZERO’
55 | static inline int __must_check PTR_ERR_OR_ZERO(__force const void *ptr)
| ^~~~~~~~~~~~~~~
/opt/net-next/tools/include/linux/err.h:70:35: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘ERR_CAST’
70 | static inline void * __must_check ERR_CAST(__force const void *ptr)
| ^~~~~~~~
In file included from main.c:76:
/opt/gcc-arm-11.2-2022.02-x86_64-aarch64-none-linux-gnu/sysroot/usr/include/bpf/btf.h:208:35: warning: ‘enum btf_func_linkage’ declared inside parameter list will not be visible outside of this definition
or declaration
208 | enum btf_func_linkage linkage, int proto_type_id);
| ^~~~~~~~~~~~~~~~
/opt/gcc-arm-11.2-2022.02-x86_64-aarch64-none-linux-gnu/sysroot/usr/include/bpf/btf.h: In function ‘btf_kflag’:
/opt/gcc-arm-11.2-2022.02-x86_64-aarch64-none-linux-gnu/sysroot/usr/include/bpf/btf.h:332:16: warning: implicit declaration of function ‘BTF_INFO_KFLAG’; did you mean ‘BTF_INFO_KIND’? [-Wimplicit-function
-declaration]
332 | return BTF_INFO_KFLAG(t->info);
| ^~~~~~~~~~~~~~
| BTF_INFO_KIND
/opt/gcc-arm-11.2-2022.02-x86_64-aarch64-none-linux-gnu/sysroot/usr/include/bpf/btf.h: In function ‘btf_member_bit_offset’:
/opt/gcc-arm-11.2-2022.02-x86_64-aarch64-none-linux-gnu/sysroot/usr/include/bpf/btf.h:534:24: warning: implicit declaration of function ‘BTF_MEMBER_BIT_OFFSET’ [-Wimplicit-function-declaration]
534 | return kflag ? BTF_MEMBER_BIT_OFFSET(m->offset) : m->offset;
| ^~~~~~~~~~~~~~~~~~~~~
/opt/gcc-arm-11.2-2022.02-x86_64-aarch64-none-linux-gnu/sysroot/usr/include/bpf/btf.h: In function ‘btf_member_bitfield_size’:
/opt/gcc-arm-11.2-2022.02-x86_64-aarch64-none-linux-gnu/sysroot/usr/include/bpf/btf.h:546:24: warning: implicit declaration of function ‘BTF_MEMBER_BITFIELD_SIZE’ [-Wimplicit-function-declaration]
546 | return kflag ? BTF_MEMBER_BITFIELD_SIZE(m->offset) : 0;
| ^~~~~~~~~~~~~~~~~~~~~~~~
In file included from main.c:77:
/opt/gcc-arm-11.2-2022.02-x86_64-aarch64-none-linux-gnu/sysroot/usr/include/bpf/libbpf.h: At top level:
/opt/gcc-arm-11.2-2022.02-x86_64-aarch64-none-linux-gnu/sysroot/usr/include/bpf/libbpf.h:70:54: warning: ‘enum bpf_link_type’ declared inside parameter list will not be visible outside of this definition
or declaration
70 | LIBBPF_API const char *libbpf_bpf_link_type_str(enum bpf_link_type t);
| ^~~~~~~~~~~~~
In file included from main.c:73:
main.c: In function ‘btf_id__find’:
/opt/net-next/tools/include/linux/rbtree.h:37:37: warning: implicit declaration of function ‘container_of’ [-Wimplicit-function-declaration]
37 | #define rb_entry(ptr, type, member) container_of(ptr, type, member)
| ^~~~~~~~~~~~
main.c:174:22: note: in expansion of macro ‘rb_entry’
174 | id = rb_entry(p, struct btf_id, rb_node);
| ^~~~~~~~
main.c:174:34: error: expected expression before ‘struct’
174 | id = rb_entry(p, struct btf_id, rb_node);
| ^~~~~~
/opt/net-next/tools/include/linux/rbtree.h:37:55: note: in definition of macro ‘rb_entry’
37 | #define rb_entry(ptr, type, member) container_of(ptr, type, member)
| ^~~~
main.c: In function ‘btf_id__add’:
main.c:196:39: error: expected expression before ‘struct’
196 | id = rb_entry(parent, struct btf_id, rb_node);
| ^~~~~~
/opt/net-next/tools/include/linux/rbtree.h:37:55: note: in definition of macro ‘rb_entry’
37 | #define rb_entry(ptr, type, member) container_of(ptr, type, member)
| ^~~~
main.c: In function ‘__symbols_patch’:
main.c:632:37: error: expected expression before ‘struct’
632 | id = rb_entry(next, struct btf_id, rb_node);
| ^~~~~~
/opt/net-next/tools/include/linux/rbtree.h:37:55: note: in definition of macro ‘rb_entry’
37 | #define rb_entry(ptr, type, member) container_of(ptr, type, member)
| ^~~~
main.c: In function ‘sets_patch’:
main.c:662:39: error: expected expression before ‘struct’
662 | id = rb_entry(next, struct btf_id, rb_node);
| ^~~~~~
/opt/net-next/tools/include/linux/rbtree.h:37:55: note: in definition of macro ‘rb_entry’
37 | #define rb_entry(ptr, type, member) container_of(ptr, type, member)
| ^~~~
In file included from main.c:78:
main.c: In function ‘main’:
/opt/net-next/output-arm64/tools/bpf/resolve_btfids/libsubcmd/include/subcmd/parse-options.h:118:32: warning: implicit declaration of function ‘BUILD_BUG_ON_ZERO’ [-Wimplicit-function-declaration]
118 | #define check_vtype(v, type) ( BUILD_BUG_ON_ZERO(!__builtin_types_compatible_p(typeof(v), type)) + v )
| ^~~~~~~~~~~~~~~~~
/opt/net-next/output-arm64/tools/bpf/resolve_btfids/libsubcmd/include/subcmd/parse-options.h:131:106: note: in expansion of macro ‘check_vtype’
131 | #define OPT_INCR(s, l, v, h) { .type = OPTION_INCR, .short_name = (s), .long_name = (l), .value = check_vtype(v, int *), .help = (h) }
| ^~~~~~~~~~~
main.c:736:17: note: in expansion of macro ‘OPT_INCR’
736 | OPT_INCR('v', "verbose", &verbose,
| ^~~~~~~~
make[4]: *** [/opt/net-next/tools/build/Makefile.build:97: /opt/net-next/output-arm64/tools/bpf/resolve_btfids/main.o] Error 1
make[3]: *** [Makefile:80: /opt/net-next/output-arm64/tools/bpf/resolve_btfids//resolve_btfids-in.o] Error 2
make[2]: *** [Makefile:76: bpf/resolve_btfids] Error 2
make[1]: *** [/opt/net-next/Makefile:1451: tools/bpf/resolve_btfids] Error 2
make[1]: *** Waiting for unfinished jobs....
HOSTLD scripts/mod/modpost
CC kernel/bounds.s
CC arch/arm64/kernel/asm-offsets.s
CALL ../scripts/checksyscalls.sh
make[1]: Leaving directory '/opt/net-next/output-arm64'
make: *** [Makefile:242: __sub-make] Error 2
After reverting:
make -j 8 Image.gz dtbs modules W=1 C=1
make[1]: Entering directory '/opt/net-next/output-arm64'
GEN Makefile
DESCEND bpf/resolve_btfids
CALL ../scripts/checksyscalls.sh
INSTALL libsubcmd_headers
CC /opt/net-next/output-arm64/tools/bpf/resolve_btfids/libsubcmd/exec-cmd.o
CC /opt/net-next/output-arm64/tools/bpf/resolve_btfids/libsubcmd/help.o
CC /opt/net-next/output-arm64/tools/bpf/resolve_btfids/libsubcmd/pager.o
CC /opt/net-next/output-arm64/tools/bpf/resolve_btfids/libsubcmd/parse-options.o
CC /opt/net-next/output-arm64/tools/bpf/resolve_btfids/libsubcmd/run-command.o
CC /opt/net-next/output-arm64/tools/bpf/resolve_btfids/libsubcmd/sigchain.o
CC /opt/net-next/output-arm64/tools/bpf/resolve_btfids/libsubcmd/subcmd-config.o
LDS arch/arm64/kernel/vdso/vdso.lds
CC arch/arm64/kernel/vdso/vgettimeofday.o
AS arch/arm64/kernel/vdso/note.o
AS arch/arm64/kernel/vdso/sigreturn.o
CHECK ../arch/arm64/kernel/vdso/vgettimeofday.c
../arch/arm64/kernel/vdso/vgettimeofday.c:9:5: warning: symbol '__kernel_clock_gettime' was not declared. Should it be static?
../arch/arm64/kernel/vdso/vgettimeofday.c:15:5: warning: symbol '__kernel_gettimeofday' was not declared. Should it be static?
../arch/arm64/kernel/vdso/vgettimeofday.c:21:5: warning: symbol '__kernel_clock_getres' was not declared. Should it be static?
LD arch/arm64/kernel/vdso/vdso.so.dbg
VDSOSYM include/generated/vdso-offsets.h
OBJCOPY arch/arm64/kernel/vdso/vdso.so
LD /opt/net-next/output-arm64/tools/bpf/resolve_btfids/libsubcmd/libsubcmd-in.o
AR /opt/net-next/output-arm64/tools/bpf/resolve_btfids/libsubcmd/libsubcmd.a
CC /opt/net-next/output-arm64/tools/bpf/resolve_btfids/main.o
CC /opt/net-next/output-arm64/tools/bpf/resolve_btfids/rbtree.o
CC /opt/net-next/output-arm64/tools/bpf/resolve_btfids/zalloc.o
CC /opt/net-next/output-arm64/tools/bpf/resolve_btfids/string.o
CC /opt/net-next/output-arm64/tools/bpf/resolve_btfids/ctype.o
CC /opt/net-next/output-arm64/tools/bpf/resolve_btfids/str_error_r.o
LD /opt/net-next/output-arm64/tools/bpf/resolve_btfids/resolve_btfids-in.o
LINK resolve_btfids
(...)
Sadly idk how to fix it. I put this print in tools/bpf/resolve_btfids/Makefile
if it helps:
$(error CC $(CC) HOSTCC $(HOSTCC) HOSTCFLAGS $(HOSTCFLAGS) KBUILD_HOSTCFLAGS $(KBUILD_HOSTLDFLAGS))
which outputs:
Makefile:24: *** CC aarch64-none-linux-gnu-gcc HOSTCC gcc HOSTCFLAGS KBUILD_HOSTCFLAGS . Stop.
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