From f3ab336d7ceda929dc8dc4a8b09a9552dc6be0b1 Mon Sep 17 00:00:00 2001 From: Jo-Philipp Wich Date: Fri, 30 Aug 2019 15:22:01 +0200 Subject: [PATCH] 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 --- .../900-fix-undefined-macro-access.patch | 198 ++++++++++++++++++ 1 file changed, 198 insertions(+) create mode 100644 tools/libelf/patches/900-fix-undefined-macro-access.patch 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 + #else /* __LIBELF_INTERNAL__ */ + #include + #endif /* __LIBELF_INTERNAL__ */ + +-#if __LIBELF_NEED_LINK_H ++#if defined(__LIBELF_NEED_LINK_H) + #include +-#elif __LIBELF_NEED_SYS_LINK_H ++#elif defined(__LIBELF_NEED_SYS_LINK_H) + #include + #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 /* for size_t */ + #include + +-#if __LIBELF_INTERNAL__ ++#if defined(__LIBELF_INTERNAL__) + #include + #else /* __LIBELF_INTERNAL__ */ + #include +@@ -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;