What does "@" mean in a C/C++'s macro? -

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i cross-compiled firmware openwrt, , file strange named libbfd.h , compiling failed, have ever seen it. in libbfd.h line 83:

79 #define bfd_host_64bit_long @bfd_host_64bit_long@ 80 #define bfd_host_64bit_long_long @bfd_host_64bit_long_long@ 81 #if @bfd_host_64_bit_defined@ 82 #define bfd_host_64_bit @bfd_host_64_bit@ 83 #define bfd_host_u_64_bit @bfd_host_u_64_bit@ 84 typedef bfd_host_64_bit bfd_int64_t; 85 typedef bfd_host_u_64_bit bfd_uint64_t; 86 #endif

here bfd_host_u_64_bit defined @bfd_host_64_bit@, what's mean "@", tested in test file, can't compiling. me? thx!

@variables@ replaced values during configuration on target system.

see this page of autoconf manual.

did typical:

./configure make

to build it? should have constant values.


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