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authorJo-Philipp Wich <jo@mein.io>2019-08-30 15:22:01 +0200
committerJo-Philipp Wich <jo@mein.io>2019-09-04 13:46:55 +0200
commit5aa1b9ad681455b5e164ea1c12f80a0b104bf3d5 (patch)
tree462f0804f72e8486ea425c93866b227f67ea569b
parent2e490e7e46a4f6fbf66fa930a25c2991e24c0f83 (diff)
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tools: libelf: fix headers to trigger -Wundef warnings
When libelf from tools/ is used for building the kernel, compilation aborts due to access to undefined defines since Kbuild adds -Wundef to the compiler flags. Patch the header files to use `#if defined(...)` instead of `#if ...` to prevent such issues. Ref: https://github.com/NixOS/nixpkgs/issues/59929 Signed-off-by: Jo-Philipp Wich <jo@mein.io> (cherry picked from commit f3ab336d7ceda929dc8dc4a8b09a9552dc6be0b1)
-rw-r--r--tools/libelf/patches/900-fix-undefined-macro-access.patch198
1 files changed, 198 insertions, 0 deletions
diff --git a/tools/libelf/patches/900-fix-undefined-macro-access.patch b/tools/libelf/patches/900-fix-undefined-macro-access.patch
new file mode 100644
index 0000000000..21e7d1ba8f
--- /dev/null
+++ b/tools/libelf/patches/900-fix-undefined-macro-access.patch
@@ -0,0 +1,198 @@
+--- a/lib/elf_repl.h
++++ b/lib/elf_repl.h
+@@ -45,7 +45,7 @@ typedef __libelf_u32_t Elf32_Word;
+ #define ELF32_FSZ_SWORD 4
+ #define ELF32_FSZ_WORD 4
+
+-#if __LIBELF64
++#if defined(__LIBELF64)
+
+ typedef __libelf_u64_t Elf64_Addr;
+ typedef __libelf_u16_t Elf64_Half;
+@@ -93,7 +93,7 @@ typedef struct {
+ Elf32_Half e_shstrndx;
+ } Elf32_Ehdr;
+
+-#if __LIBELF64
++#if defined(__LIBELF64)
+ typedef struct {
+ unsigned char e_ident[EI_NIDENT];
+ Elf64_Half e_type;
+@@ -307,7 +307,7 @@ typedef struct {
+ Elf32_Word sh_entsize;
+ } Elf32_Shdr;
+
+-#if __LIBELF64
++#if defined(__LIBELF64)
+ typedef struct {
+ Elf64_Word sh_name;
+ Elf64_Word sh_type;
+@@ -434,7 +434,7 @@ typedef struct {
+ Elf32_Half st_shndx;
+ } Elf32_Sym;
+
+-#if __LIBELF64
++#if defined(__LIBELF64)
+ typedef struct {
+ Elf64_Word st_name;
+ unsigned char st_info;
+@@ -457,7 +457,7 @@ typedef struct {
+ #define ELF32_ST_TYPE(i) ((i)&0xf)
+ #define ELF32_ST_INFO(b,t) (((b)<<4)+((t)&0xf))
+
+-#if __LIBELF64
++#if defined(__LIBELF64)
+ #define ELF64_ST_BIND(i) ((i)>>4)
+ #define ELF64_ST_TYPE(i) ((i)&0xf)
+ #define ELF64_ST_INFO(b,t) (((b)<<4)+((t)&0xf))
+@@ -495,7 +495,7 @@ typedef struct {
+ * Macros for manipulating st_other
+ */
+ #define ELF32_ST_VISIBILITY(o) ((o)&0x3)
+-#if __LIBELF64
++#if defined(__LIBELF64)
+ #define ELF64_ST_VISIBILITY(o) ((o)&0x3)
+ #endif /* __LIBELF64 */
+
+@@ -521,7 +521,7 @@ typedef struct {
+ Elf32_Sword r_addend;
+ } Elf32_Rela;
+
+-#if __LIBELF64
++#if defined(__LIBELF64)
+ typedef struct {
+ Elf64_Addr r_offset;
+ Elf64_Xword r_info;
+@@ -541,7 +541,7 @@ typedef struct {
+ #define ELF32_R_TYPE(i) ((unsigned char)(i))
+ #define ELF32_R_INFO(s,t) (((s)<<8)+(unsigned char)(t))
+
+-#if __LIBELF64
++#if defined(__LIBELF64)
+ #define ELF64_R_SYM(i) ((Elf64_Xword)(i)>>32)
+ #define ELF64_R_TYPE(i) ((i)&0xffffffffL)
+ #define ELF64_R_INFO(s,t) (((Elf64_Xword)(s)<<32)+((t)&0xffffffffL))
+@@ -556,7 +556,7 @@ typedef struct {
+ Elf32_Word n_type; /* descriptor type */
+ } Elf32_Nhdr;
+
+-#if __LIBELF64
++#if defined(__LIBELF64)
+ /* Solaris and GNU use this layout. Be compatible. */
+ /* XXX: Latest ELF specs say it's 64-bit!!! */
+ typedef struct {
+@@ -587,7 +587,7 @@ typedef struct {
+ Elf32_Word p_align;
+ } Elf32_Phdr;
+
+-#if __LIBELF64
++#if defined(__LIBELF64)
+ typedef struct {
+ Elf64_Word p_type;
+ Elf64_Word p_flags;
+@@ -654,7 +654,7 @@ typedef struct {
+ } d_un;
+ } Elf32_Dyn;
+
+-#if __LIBELF64
++#if defined(__LIBELF64)
+ typedef struct {
+ Elf64_Sxword d_tag;
+ union {
+@@ -798,7 +798,7 @@ typedef struct {
+ Elf32_Half si_flags;
+ } Elf32_Syminfo;
+
+-#if __LIBELF64
++#if defined(__LIBELF64)
+ typedef struct {
+ Elf64_Half si_boundto;
+ Elf64_Half si_flags;
+@@ -863,7 +863,7 @@ typedef struct {
+
+ typedef Elf32_Half Elf32_Versym;
+
+-#if __LIBELF64
++#if defined(__LIBELF64)
+
+ typedef struct {
+ Elf64_Half vd_version;
+@@ -933,7 +933,7 @@ typedef Elf64_Half Elf64_Versym;
+ /*
+ * Move section
+ */
+-#if __LIBELF64
++#if defined(__LIBELF64)
+
+ typedef struct {
+ Elf32_Lword m_value;
+@@ -973,7 +973,7 @@ typedef struct {
+ } c_un;
+ } Elf32_Cap;
+
+-#if __LIBELF64
++#if defined(__LIBELF64)
+
+ typedef struct {
+ Elf64_Xword c_tag;
+--- a/lib/gelf.h
++++ b/lib/gelf.h
+@@ -22,15 +22,15 @@
+ #ifndef _GELF_H
+ #define _GELF_H
+
+-#if __LIBELF_INTERNAL__
++#if defined(__LIBELF_INTERNAL__)
+ #include <libelf.h>
+ #else /* __LIBELF_INTERNAL__ */
+ #include <libelf/libelf.h>
+ #endif /* __LIBELF_INTERNAL__ */
+
+-#if __LIBELF_NEED_LINK_H
++#if defined(__LIBELF_NEED_LINK_H)
+ #include <link.h>
+-#elif __LIBELF_NEED_SYS_LINK_H
++#elif defined(__LIBELF_NEED_SYS_LINK_H)
+ #include <sys/link.h>
+ #endif /* __LIBELF_NEED_LINK_H */
+
+@@ -71,7 +71,7 @@ typedef Elf64_Sym GElf_Sym;
+ /*
+ * Symbol versioning
+ */
+-#if __LIBELF_SYMBOL_VERSIONS
++#if defined(__LIBELF_SYMBOL_VERSIONS)
+ typedef Elf64_Verdef GElf_Verdef;
+ typedef Elf64_Verneed GElf_Verneed;
+ typedef Elf64_Verdaux GElf_Verdaux;
+--- a/lib/libelf.h
++++ b/lib/libelf.h
+@@ -25,7 +25,7 @@
+ #include <stddef.h> /* for size_t */
+ #include <sys/types.h>
+
+-#if __LIBELF_INTERNAL__
++#if defined(__LIBELF_INTERNAL__)
+ #include <sys_elf.h>
+ #else /* __LIBELF_INTERNAL__ */
+ #include <libelf/sys_elf.h>
+@@ -224,7 +224,7 @@ extern Elf_Data *elf32_xlatetom __P((Elf
+ */
+ extern long elf32_checksum __P((Elf *__elf));
+
+-#if __LIBELF64
++#if defined(__LIBELF64)
+ /*
+ * 64-bit ELF functions
+ * Not available on all platforms
+--- a/lib/sys_elf.h.in
++++ b/lib/sys_elf.h.in
+@@ -116,7 +116,7 @@ Foundation, Inc., 51 Franklin Street, Fi
+ # define ELF64_R_INFO(s,t) (((Elf64_Xword)(s)<<32)+((t)&0xffffffffL))
+ # endif /* ELF64_R_SYM */
+
+-# if __LIBELF64_LINUX
++# if defined(__LIBELF64_LINUX)
+ typedef __libelf_u64_t Elf64_Addr;
+ typedef __libelf_u16_t Elf64_Half;
+ typedef __libelf_u64_t Elf64_Off;