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build: Introduce SECP256K1_STATIC macro for Windows users

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It is a non-Libtool-specific way to explicitly specify the user's
intention to consume a static `libseck256k1`.

This change allows to get rid of MSVC linker warnings LNK4217 and
LNK4286. Also, it makes possible to merge the `SECP256K1_API` and
`SECP256K1_API_VAR` into one.
This commit is contained in:
Hennadii Stepanov
2023-06-30 09:26:48 +01:00
parent 7966aee31d
commit ae9db95cea
6 changed files with 11 additions and 16 deletions
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8
include/secp256k1.h
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@@ -141,10 +141,10 @@ typedef int (*secp256k1_nonce_function)(
# define SECP256K1_API __declspec (dllexport)
# define SECP256K1_API_VAR extern __declspec (dllexport)
# endif
# elif defined _MSC_VER
# define SECP256K1_API
# define SECP256K1_API_VAR extern __declspec (dllimport)
# elif defined DLL_EXPORT
/* The user must define SECP256K1_STATIC when consuming libsecp256k1 as a static
* library on Windows. */
# elif !defined(SECP256K1_STATIC)
/* Consuming libsecp256k1 as a DLL. */
# define SECP256K1_API __declspec (dllimport)
# define SECP256K1_API_VAR extern __declspec (dllimport)
# endif