INCBIN and VS2022 with clang

[chrisw]

Try as I might, I can't get the code below to work. Using VS2022 with clang as the platform toolset.

Origin is:

Code: Select all

#include <stdio.h>

#define STR2(x) #x
#define STR(x) STR2(x)

#ifdef _WIN32
#define INCBIN_SECTION ".rdata, \"dr\""
#else
#define INCBIN_SECTION ".rodata"
#endif

// this aligns start address to 16 and terminates byte array with explict 0
// which is not really needed, feel free to change it to whatever you want/need
#define INCBIN(name, file) \
    __asm__(".section " INCBIN_SECTION "\n" \
            ".global incbin_" STR(name) "_start\n" \
            ".balign 16\n" \
            "incbin_" STR(name) "_start:\n" \
            ".incbin \"" file "\"\n" \
            \
            ".global incbin_" STR(name) "_end\n" \
            ".balign 1\n" \
            "incbin_" STR(name) "_end:\n" \
            ".byte 0\n" \
    ); \
    extern __attribute__((aligned(16))) const char incbin_ ## name ## _start[]; \
    extern                              const char incbin_ ## name ## _end[]

INCBIN(foobar, "binary.bin");

int main()
{
    printf("start = %p\n", &incbin_foobar_start);
    printf("end = %p\n", &incbin_foobar_end);
    printf("size = %zu\n", (char*)&incbin_foobar_end - (char*)&incbin_foobar_start);
    printf("first byte = 0x%02hhx\n", incbin_foobar_start[0]);
}

it errors, claiming that incbin_foobar_start and end are undefined

lld-link : error : undefined symbol: incbin_foobar_start

except it appears to be very clearly defined.

Anyone?

[hgm]

You could compile with the -S option to check if the produced assembly code indeed contains the label definition as you expect it. If it does it must be a pure assembler problem.

[Joost Buijs]

The MSVC compiler complains about everything and is clearly not compatible with the code as it is, but with CLang 15.0.1 (the one that comes with Visual Studio) it compiles without problem. No idea why it doesn't work on your end.

[chrisw]

The MSVC compiler complains about everything and is clearly not compatible with the code as it is, but with CLang 15.0.1 (the one that comes with Visual Studio) it compiles without problem. No idea why it doesn't work on your end.

Strange, it compiles fine, but doesn't link, well that means it doesn't compile of course. Intellisense is quite happy with the symbols, but the linker not. I'm not sure if the compile stage simply doesn't produce the code block. Or the linker fails. More likely the code block isn't produced, it seems. Really stuck for where to try and make progress.

Not sure which version clang, It says LLVM clang-cl. I'm using ISO 20.

[chrisw]

https://github.com/ChrisWhittington/inc ... /tree/main

This VS Project is as far as I got with VS and clang ....

[Joost Buijs]

Hi Chris,

Right now I'm not at home. Tomorrow I will take another look at it, and try to include a binary file.

I think I know what the problem is, this will only work when you compile it with a C compiler, and not with C++.
Try to rename the incbin source to .C and it will probably work.

[chrisw]

C? I’ll give that a try. Right now the entire everything is sort of disintegrating, debug mode and optimisations off won’t turn optimisations off, so single stepping keeps jumping over code and variables say they’re optimised away. Some code isn’t being executed even. Chaos. Reboot and try again tomorrow.

[Ras]

I think I know what the problem is, this will only work when you compile it with a C compiler, and not with C++.

No issues under Linux with Clang 14 as .cpp or as .c - though I also had suspected that the name mangling in C++ might be the problem.

HMG's suggestion to add -S for the assembly listing makes sense. With

Code: Select all

clang -std=c++20 -S incbin.cpp

and copy/pasting incbin.h as book.bin dummy file (hence the text stuff in gbookbinData), the assembly result looks like this:

Code: Select all

	.text
	.file	"incbin.cpp"
                                        # Start of file scope inline assembly
	.section	.rodata,"a",@progbits
	.globl	gbookbinData
	.type	gbookbinData,@object
	.p2align	4
gbookbinData:
	.ascii	"#pragma once\r\n/**\r\n * @file incbin.h\r\n * @author Dale Weiler\r\n * @brief Utility for including binary files\r\n *\r\n * Facilities for including binary files into the current translation unit and\r\n * making use from them externally in other translation units.\r\n */\r\n#ifndef INCBIN_HDR\r\n#define INCBIN_HDR\r\n#include <limits.h>\r\n#if   defined(__AVX512BW__) || \\\r\n      defined(__AVX512CD__) || \\\r\n      defined(__AVX512DQ__) || \\\r\n      defined(__AVX512ER__) || \\\r\n      defined(__AVX512PF__) || \\\r\n      defined(__AVX512VL__) || \\\r\n      defined(__AVX512F__)\r\n# define INCBIN_ALIGNMENT_INDEX 6\r\n#elif defined(__AVX__)      || \\\r\n      defined(__AVX2__)\r\n# define INCBIN_ALIGNMENT_INDEX 5\r\n#elif defined(__SSE__)      || \\\r\n      defined(__SSE2__)     || \\\r\n      defined(__SSE3__)     || \\\r\n      defined(__SSSE3__)    || \\\r\n      defined(__SSE4_1__)   || \\\r\n      defined(__SSE4_2__)   || \\\r\n      defined(__neon__)\r\n# define INCBIN_ALIGNMENT_INDEX 4\r\n#elif ULONG_MAX != 0xffffffffu\r\n# define INCBIN_ALIGNMENT_INDEX 3\r\n# else\r\n# define INCBIN_ALIGNMENT_INDEX 2\r\n#endif\r\n\r\n /* Lookup table of (1 << n) where `n' is `INCBIN_ALIGNMENT_INDEX' */\r\n#define INCBIN_ALIGN_SHIFT_0 1\r\n#define INCBIN_ALIGN_SHIFT_1 2\r\n#define INCBIN_ALIGN_SHIFT_2 4\r\n#define INCBIN_ALIGN_SHIFT_3 8\r\n#define INCBIN_ALIGN_SHIFT_4 16\r\n#define INCBIN_ALIGN_SHIFT_5 32\r\n#define INCBIN_ALIGN_SHIFT_6 64\r\n\r\n/* Actual alignment value */\r\n#define INCBIN_ALIGNMENT \\\r\n    INCBIN_CONCATENATE( \\\r\n        INCBIN_CONCATENATE(INCBIN_ALIGN_SHIFT, _), \\\r\n        INCBIN_ALIGNMENT_INDEX)\r\n\r\n/* Stringize */\r\n#define INCBIN_STR(X) \\\r\n    #X\r\n#define INCBIN_STRINGIZE(X) \\\r\n    INCBIN_STR(X)\r\n/* Concatenate */\r\n#define INCBIN_CAT(X, Y) \\\r\n    X ## Y\r\n#define INCBIN_CONCATENATE(X, Y) \\\r\n    INCBIN_CAT(X, Y)\r\n/* Deferred macro expansion */\r\n#define INCBIN_EVAL(X) \\\r\n    X\r\n#define INCBIN_INVOKE(N, ...) \\\r\n    INCBIN_EVAL(N(__VA_ARGS__))\r\n\r\n/* Green Hills uses a different directive for including binary data */\r\n#if defined(__ghs__)\r\n#  if (__ghs_asm == 2)\r\n#    define INCBIN_MACRO \".file\"\r\n/* Or consider the \".myrawdata\" entry in the ld file */\r\n#  else\r\n#    define INCBIN_MACRO \"\\tINCBIN\"\r\n#  endif\r\n#else\r\n#  define INCBIN_MACRO \".incbin\"\r\n#endif\r\n\r\n#ifndef _MSC_VER\r\n#  define INCBIN_ALIGN \\\r\n    __attribute__((aligned(INCBIN_ALIGNMENT)))\r\n#else\r\n#  define INCBIN_ALIGN __declspec(align(INCBIN_ALIGNMENT))\r\n#endif\r\n\r\n#if defined(__arm__) || /* GNU C and RealView */ \\\r\n    defined(__arm) || /* Diab */ \\\r\n    defined(_ARM) /* ImageCraft */\r\n#  define INCBIN_ARM\r\n#endif\r\n\r\n#ifdef __GNUC__\r\n/* Utilize .balign where supported */\r\n#  define INCBIN_ALIGN_HOST \".balign \" INCBIN_STRINGIZE(INCBIN_ALIGNMENT) \"\\n\"\r\n#  define INCBIN_ALIGN_BYTE \".balign 1\\n\"\r\n#elif defined(INCBIN_ARM)\r\n/*\r\n * On arm assemblers, the alignment value is calculated as (1 << n) where `n' is\r\n * the shift count. This is the value passed to `.align'\r\n */\r\n#  define INCBIN_ALIGN_HOST \".align \" INCBIN_STRINGIZE(INCBIN_ALIGNMENT_INDEX) \"\\n\"\r\n#  define INCBIN_ALIGN_BYTE \".align 0\\n\"\r\n#else\r\n/* We assume other inline assembler's treat `.align' as `.balign' */\r\n#  define INCBIN_ALIGN_HOST \".align \" INCBIN_STRINGIZE(INCBIN_ALIGNMENT) \"\\n\"\r\n#  define INCBIN_ALIGN_BYTE \".align 1\\n\"\r\n#endif\r\n\r\n/* INCBIN_CONST is used by incbin.c generated files */\r\n#if defined(__cplusplus)\r\n#  define INCBIN_EXTERNAL extern \"C\"\r\n#  define INCBIN_CONST    extern const\r\n#else\r\n#  define INCBIN_EXTERNAL extern\r\n#  define INCBIN_CONST    const\r\n#endif\r\n\r\n/**\r\n * @brief Optionally override the linker section into which data is emitted.\r\n *\r\n * @warning If you use this facility, you'll have to deal with platform-specific linker output\r\n * section naming on your own\r\n *\r\n * Overriding the default linker output section, e.g for esp8266/Arduino:\r\n * @code\r\n * #define INCBIN_OUTPUT_SECTION \".irom.text\"\r\n * #include \"incbin.h\"\r\n * INCBIN(Foo, \"foo.txt\");\r\n * // Data is emitted into program memory that never gets copied to RAM\r\n * @endcode\r\n */\r\n#if !defined(INCBIN_OUTPUT_SECTION)\r\n#  if defined(__APPLE__)\r\n#    define INCBIN_OUTPUT_SECTION         \".const_data\"\r\n#  else\r\n#    define INCBIN_OUTPUT_SECTION         \".rodata\"\r\n#  endif\r\n#endif\r\n\r\n#if defined(__APPLE__)\r\n /* The directives are different for Apple branded compilers */\r\n#  define INCBIN_SECTION         INCBIN_OUTPUT_SECTION \"\\n\"\r\n#  define INCBIN_GLOBAL(NAME)    \".globl \" INCBIN_MANGLE INCBIN_STRINGIZE(INCBIN_PREFIX) #NAME \"\\n\"\r\n#  define INCBIN_INT             \".long \"\r\n#  define INCBIN_MANGLE          \"_\"\r\n#  define INCBIN_BYTE            \".byte \"\r\n#  define INCBIN_TYPE(...)\r\n#else\r\n#  define INCBIN_SECTION         \".section \" INCBIN_OUTPUT_SECTION \"\\n\"\r\n#  define INCBIN_GLOBAL(NAME)    \".global \" INCBIN_STRINGIZE(INCBIN_PREFIX) #NAME \"\\n\"\r\n#  if defined(__ghs__)\r\n#    define INCBIN_INT           \".word \"\r\n#  else\r\n#    define INCBIN_INT           \".int \"\r\n#  endif\r\n#  if defined(__USER_LABEL_PREFIX__)\r\n#    define INCBIN_MANGLE        INCBIN_STRINGIZE(__USER_LABEL_PREFIX__)\r\n#  else\r\n#    define INCBIN_MANGLE        \"\"\r\n#  endif\r\n#  if defined(INCBIN_ARM)\r\n /* On arm assemblers, `@' is used as a line comment token */\r\n#    define INCBIN_TYPE(NAME)    \".type \" INCBIN_STRINGIZE(INCBIN_PREFIX) #NAME \", %object\\n\"\r\n#  elif defined(__MINGW32__) || defined(__MINGW64__)\r\n /* Mingw doesn't support this directive either */\r\n#    define INCBIN_TYPE(NAME)\r\n#  else\r\n /* It's safe to use `@' on other architectures */\r\n#    define INCBIN_TYPE(NAME)    \".type \" INCBIN_STRINGIZE(INCBIN_PREFIX) #NAME \", @object\\n\"\r\n#  endif\r\n#  define INCBIN_BYTE            \".byte \"\r\n#endif\r\n\r\n/* List of style types used for symbol names */\r\n#define INCBIN_STYLE_CAMEL 0\r\n#define INCBIN_STYLE_SNAKE 1\r\n\r\n/**\r\n * @brief Specify the prefix to use for symbol names.\r\n *\r\n * By default this is `g', producing symbols of the form:\r\n * @code\r\n * #include \"incbin.h\"\r\n * INCBIN(Foo, \"foo.txt\");\r\n *\r\n * // Now you have the following symbols:\r\n * // const unsigned char gFooData[];\r\n * // const unsigned char *const gFooEnd;\r\n * // const unsigned int gFooSize;\r\n * @endcode\r\n *\r\n * If however you specify a prefix before including: e.g:\r\n * @code\r\n * #define INCBIN_PREFIX incbin\r\n * #include \"incbin.h\"\r\n * INCBIN(Foo, \"foo.txt\");\r\n *\r\n * // Now you have the following symbols instead:\r\n * // const unsigned char incbinFooData[];\r\n * // const unsigned char *const incbinFooEnd;\r\n * // const unsigned int incbinFooSize;\r\n * @endcode\r\n */\r\n#if !defined(INCBIN_PREFIX)\r\n#  define INCBIN_PREFIX g\r\n#endif\r\n\r\n /**\r\n  * @brief Specify the style used for symbol names.\r\n  *\r\n  * Possible options are\r\n  * - INCBIN_STYLE_CAMEL \"CamelCase\"\r\n  * - INCBIN_STYLE_SNAKE \"snake_case\"\r\n  *\r\n  * Default option is *INCBIN_STYLE_CAMEL* producing symbols of the form:\r\n  * @code\r\n  * #include \"incbin.h\"\r\n  * INCBIN(Foo, \"foo.txt\");\r\n  *\r\n  * // Now you have the following symbols:\r\n  * // const unsigned char <prefix>FooData[];\r\n  * // const unsigned char *const <prefix>FooEnd;\r\n  * // const unsigned int <prefix>FooSize;\r\n  * @endcode\r\n  *\r\n  * If however you specify a style before including: e.g:\r\n  * @code\r\n  * #define INCBIN_STYLE INCBIN_STYLE_SNAKE\r\n  * #include \"incbin.h\"\r\n  * INCBIN(foo, \"foo.txt\");\r\n  *\r\n  * // Now you have the following symbols:\r\n  * // const unsigned char <prefix>foo_data[];\r\n  * // const unsigned char *const <prefix>foo_end;\r\n  * // const unsigned int <prefix>foo_size;\r\n  * @endcode\r\n  */\r\n#if !defined(INCBIN_STYLE)\r\n#  define INCBIN_STYLE INCBIN_STYLE_CAMEL\r\n#endif\r\n\r\n  /* Style lookup tables */\r\n#define INCBIN_STYLE_0_DATA Data\r\n#define INCBIN_STYLE_0_END End\r\n#define INCBIN_STYLE_0_SIZE Size\r\n#define INCBIN_STYLE_1_DATA _data\r\n#define INCBIN_STYLE_1_END _end\r\n#define INCBIN_STYLE_1_SIZE _size\r\n\r\n/* Style lookup: returning identifier */\r\n#define INCBIN_STYLE_IDENT(TYPE) \\\r\n    INCBIN_CONCATENATE( \\\r\n        INCBIN_STYLE_, \\\r\n        INCBIN_CONCATENATE( \\\r\n            INCBIN_EVAL(INCBIN_STYLE), \\\r\n            INCBIN_CONCATENATE(_, TYPE)))\r\n\r\n/* Style lookup: returning string literal */\r\n#define INCBIN_STYLE_STRING(TYPE) \\\r\n    INCBIN_STRINGIZE( \\\r\n        INCBIN_STYLE_IDENT(TYPE)) \\\r\n\r\n/* Generate the global labels by indirectly invoking the macro with our style\r\n * type and concatenating the name against them. */\r\n#define INCBIN_GLOBAL_LABELS(NAME, TYPE) \\\r\n    INCBIN_INVOKE( \\\r\n        INCBIN_GLOBAL, \\\r\n        INCBIN_CONCATENATE( \\\r\n            NAME, \\\r\n            INCBIN_INVOKE( \\\r\n                INCBIN_STYLE_IDENT, \\\r\n                TYPE))) \\\r\n    INCBIN_INVOKE( \\\r\n        INCBIN_TYPE, \\\r\n        INCBIN_CONCATENATE( \\\r\n            NAME, \\\r\n            INCBIN_INVOKE( \\\r\n                INCBIN_STYLE_IDENT, \\\r\n                TYPE)))\r\n\r\n /**\r\n  * @brief Externally reference binary data included in another translation unit.\r\n  *\r\n  * Produces three external symbols that reference the binary data included in\r\n  * another translation unit.\r\n  *\r\n  * The symbol names are a concatenation of `INCBIN_PREFIX' before *NAME*; with\r\n  * \"Data\", as well as \"End\" and \"Size\" after. An example is provided below.\r\n  *\r\n  * @param NAME The name given for the binary data\r\n  *\r\n  * @code\r\n  * INCBIN_EXTERN(Foo);\r\n  *\r\n  * // Now you have the following symbols:\r\n  * // extern const unsigned char <prefix>FooData[];\r\n  * // extern const unsigned char *const <prefix>FooEnd;\r\n  * // extern const unsigned int <prefix>FooSize;\r\n  * @endcode\r\n  */\r\n#define INCBIN_EXTERN(NAME) \\\r\n    INCBIN_EXTERNAL const INCBIN_ALIGN unsigned char \\\r\n        INCBIN_CONCATENATE( \\\r\n            INCBIN_CONCATENATE(INCBIN_PREFIX, NAME), \\\r\n            INCBIN_STYLE_IDENT(DATA))[]; \\\r\n    INCBIN_EXTERNAL const INCBIN_ALIGN unsigned char *const \\\r\n    INCBIN_CONCATENATE( \\\r\n        INCBIN_CONCATENATE(INCBIN_PREFIX, NAME), \\\r\n        INCBIN_STYLE_IDENT(END)); \\\r\n    INCBIN_EXTERNAL const unsigned int \\\r\n        INCBIN_CONCATENATE( \\\r\n            INCBIN_CONCATENATE(INCBIN_PREFIX, NAME), \\\r\n            INCBIN_STYLE_IDENT(SIZE))\r\n\r\n  /**\r\n   * @brief Include a binary file into the current translation unit.\r\n   *\r\n   * Includes a binary file into the current translation unit, producing three symbols\r\n   * for objects that encode the data and size respectively.\r\n   *\r\n   * The symbol names are a concatenation of `INCBIN_PREFIX' before *NAME*; with\r\n   * \"Data\", as well as \"End\" and \"Size\" after. An example is provided below.\r\n   *\r\n   * @param NAME The name to associate with this binary data (as an identifier.)\r\n   * @param FILENAME The file to include (as a string literal.)\r\n   *\r\n   * @code\r\n   * INCBIN(Icon, \"icon.png\");\r\n   *\r\n   * // Now you have the following symbols:\r\n   * // const unsigned char <prefix>IconData[];\r\n   * // const unsigned char *const <prefix>IconEnd;\r\n   * // const unsigned int <prefix>IconSize;\r\n   * @endcode\r\n   *\r\n   * @warning This must be used in global scope\r\n   * @warning The identifiers may be different if INCBIN_STYLE is not default\r\n   *\r\n   * To externally reference the data included by this in another translation unit\r\n   * please @see INCBIN_EXTERN.\r\n   */\r\n#ifdef _MSC_VER\r\n#define INCBIN(NAME, FILENAME) \\\r\n    INCBIN_EXTERN(NAME)\r\n#else\r\n#define INCBIN(NAME, FILENAME) \\\r\n    __asm__(INCBIN_SECTION \\\r\n            INCBIN_GLOBAL_LABELS(NAME, DATA) \\\r\n            INCBIN_ALIGN_HOST \\\r\n            INCBIN_MANGLE INCBIN_STRINGIZE(INCBIN_PREFIX) #NAME INCBIN_STYLE_STRING(DATA) \":\\n\" \\\r\n            INCBIN_MACRO \" \\\"\" FILENAME \"\\\"\\n\" \\\r\n            INCBIN_GLOBAL_LABELS(NAME, END) \\\r\n            INCBIN_ALIGN_BYTE \\\r\n            INCBIN_MANGLE INCBIN_STRINGIZE(INCBIN_PREFIX) #NAME INCBIN_STYLE_STRING(END) \":\\n\" \\\r\n                INCBIN_BYTE \"1\\n\" \\\r\n            INCBIN_GLOBAL_LABELS(NAME, SIZE) \\\r\n            INCBIN_ALIGN_HOST \\\r\n            INCBIN_MANGLE INCBIN_STRINGIZE(INCBIN_PREFIX) #NAME INCBIN_STYLE_STRING(SIZE) \":\\n\" \\\r\n                INCBIN_INT INCBIN_MANGLE INCBIN_STRINGIZE(INCBIN_PREFIX) #NAME INCBIN_STYLE_STRING(END) \" - \" \\\r\n                           INCBIN_MANGLE INCBIN_STRINGIZE(INCBIN_PREFIX) #NAME INCBIN_STYLE_STRING(DATA) \"\\n\" \\\r\n            INCBIN_ALIGN_HOST \\\r\n            \".text\\n\" \\\r\n    ); \\\r\n    INCBIN_EXTERN(NAME)\r\n\r\n#endif\r\n#endif\r\n\r\n\r\n"
	.globl	gbookbinEnd
	.type	gbookbinEnd,@object
	.p2align	0
gbookbinEnd:
	.byte	1
	.globl	gbookbinSize
	.type	gbookbinSize,@object
	.p2align	4
gbookbinSize:
	.long	gbookbinEnd-gbookbinData
	.p2align	4
	.text

                                        # End of file scope inline assembly
	.globl	main                            # -- Begin function main
	.p2align	4, 0x90
	.type	main,@function
main:                                   # @main
	.cfi_startproc
# %bb.0:
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset %rbp, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register %rbp
	subq	$16, %rsp
	movl	$0, -4(%rbp)
	movq	gbookbinSize@GOTPCREL(%rip), %rax
	movl	(%rax), %esi
	leaq	.L.str(%rip), %rdi
	movb	$0, %al
	callq	printf@PLT
	leaq	.L.str.1(%rip), %rdi
	movq	gbookbinData@GOTPCREL(%rip), %rsi
	movb	$0, %al
	callq	printf@PLT
	movq	gbookbinEnd@GOTPCREL(%rip), %rax
	movq	(%rax), %rsi
	leaq	.L.str.2(%rip), %rdi
	movb	$0, %al
	callq	printf@PLT
	xorl	%eax, %eax
	addq	$16, %rsp
	popq	%rbp
	.cfi_def_cfa %rsp, 8
	retq
.Lfunc_end0:
	.size	main, .Lfunc_end0-main
	.cfi_endproc
                                        # -- End function
	.type	.L.str,@object                  # @.str
	.section	.rodata.str1.1,"aMS",@progbits,1
.L.str:
	.asciz	"bookbin_size = %d\n"
	.size	.L.str, 19

	.type	.L.str.1,@object                # @.str.1
.L.str.1:
	.asciz	"bookbin_data = %p\n"
	.size	.L.str.1, 19

	.type	.L.str.2,@object                # @.str.2
.L.str.2:
	.asciz	"bookbin_end = %p\n"
	.size	.L.str.2, 18

	.section	".linker-options","e",@llvm_linker_options
	.ident	"Ubuntu clang version 14.0.0-1ubuntu1"
	.section	".note.GNU-stack","",@progbits
	.addrsig
	.addrsig_sym printf
	.addrsig_sym gbookbinSize
	.addrsig_sym gbookbinData
	.addrsig_sym gbookbinEnd

[chrisw]

C? I’ll give that a try. Right now the entire everything is sort of disintegrating, debug mode and optimisations off won’t turn optimisations off, so single stepping keeps jumping over code and variables say they’re optimised away. Some code isn’t being executed even. Chaos. Reboot and try again tomorrow.

Same error in C

Build started...
1>------ Build started: Project: incbin-test, Configuration: Debug x64 ------
1>lld-link : error : undefined symbol: gbookbinSize
1>>>> referenced by C:\Users\chris\source\repos\incbin-test\incbin-test\incbin.c:14
1>>>> x64\Debug\incbin.obj:(main)
1>
1>lld-link : error : undefined symbol: gbookbinData
1>>>> referenced by C:\Users\chris\source\repos\incbin-test\incbin-test\incbin.c:15
1>>>> x64\Debug\incbin.obj:(main)
1>
1>lld-link : error : undefined symbol: gbookbinEnd
1>>>> referenced by C:\Users\chris\source\repos\incbin-test\incbin-test\incbin.c:16
1>>>> x64\Debug\incbin.obj:(main)
1>Done building project "incbin-test.vcxproj" -- FAILED.

[Joost Buijs]

C? I’ll give that a try. Right now the entire everything is sort of disintegrating, debug mode and optimisations off won’t turn optimisations off, so single stepping keeps jumping over code and variables say they’re optimised away. Some code isn’t being executed even. Chaos. Reboot and try again tomorrow.

Same error in C

Build started...
1>------ Build started: Project: incbin-test, Configuration: Debug x64 ------
1>lld-link : error : undefined symbol: gbookbinSize
1>>>> referenced by C:\Users\chris\source\repos\incbin-test\incbin-test\incbin.c:14
1>>>> x64\Debug\incbin.obj:(main)
1>
1>lld-link : error : undefined symbol: gbookbinData
1>>>> referenced by C:\Users\chris\source\repos\incbin-test\incbin-test\incbin.c:15
1>>>> x64\Debug\incbin.obj:(main)
1>
1>lld-link : error : undefined symbol: gbookbinEnd
1>>>> referenced by C:\Users\chris\source\repos\incbin-test\incbin-test\incbin.c:16
1>>>> x64\Debug\incbin.obj:(main)
1>Done building project "incbin-test.vcxproj" -- FAILED.

Very strange. Over here I can build and link it with a "binary.bin" file without any problems. It only works with the CLang "C" compiler though, with the C++ compiler I get undefined symbols, C++ name mangling is probably the cause of this.

It builds without a hitch:

Code: Select all

Rebuild started...
1>------ Rebuild All started: Project: incbin, Configuration: Release x64 ------
1>incbin.vcxproj -> D:\incbin\x64\Release\incbin.exe
========== Rebuild All: 1 succeeded, 0 failed, 0 skipped ==========
========== Rebuild started at 3:23 PM and took 00,508 seconds ==========

The output looks fine too:

Code: Select all

start = 00007FF699282000
end = 00007FF69A2B9E48
size = 17006152
first byte = 0x00

D:\incbin\x64\Release\incbin.exe (process 9672) exited with code 0.
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