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45 lines
1.8 KiB
Markdown
45 lines
1.8 KiB
Markdown
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# Usage
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./generate_c11_atomics_cpp_compat_header.sh [CC [CFLAGS]]
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## Parameter CC
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The C compiler to use to determine the size of the C11 atomics types. If not
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given, the environment variable CC is used instead.
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## Parameter CFLAGS
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The CFLAGS to pass to the C compiler during determination of the size of the
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C11 atomic types. If not given, the environment variable CFLAGS is used instead.
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# Output
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The script will write the sizes of each type defined in C11 atomics and which
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`uint<NUM>_t` type has the same size as the atomic type. Note that C11 allows
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to prefix any type with the `_Atomic` specifier to get an atomic version of it.
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This script will only generate entries for the default `typedef`ed types like
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`atomic_bool`, `atomic_int`, or `atomic_int_least16_t`.
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The output will look like this:
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``` C++
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/* This file was automatically generated using ./dist/tools/generate_c11_atomics_cpp_compat_header/generate_c11_atomics_cpp_compat_header.sh /*
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#pragma once
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#define ATOMIC_BOOL_SIZE (1U)
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#define ATOMIC_BOOL_SAME_SIZED_TYPE uint8_t
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#define ATOMIC_CHAR_SIZE (1U)
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#define ATOMIC_CHAR_SAME_SIZED_TYPE uint8_t
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#define ATOMIC_SCHAR_SIZE (1U)
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#define ATOMIC_SCHAR_SAME_SIZED_TYPE uint8_t
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#define ATOMIC_UCHAR_SIZE (1U)
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#define ATOMIC_UCHAR_SAME_SIZED_TYPE uint8_t
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#define ATOMIC_SHORT_SIZE (2U)
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#define ATOMIC_SHORT_SAME_SIZED_TYPE uint16_t
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#define ATOMIC_USHORT_SIZE (2U)
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#define ATOMIC_USHORT_SAME_SIZED_TYPE uint16_t
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#define ATOMIC_INT_SIZE (4U)
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#define ATOMIC_INT_SAME_SIZED_TYPE uint32_t
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...
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```
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