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Modify SCM_API for DLLs

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In https://gcc.gnu.org/wiki/Visibility, they recommend _WIN32 and
__CYGWIN__ as the test defines for dllexport.

Also, logic is incorrect since HAVE_VISIBILITY can be defined but zero.

* libguile/scm.h (SCM_API): modify #ifdef logic
This commit is contained in:
Michael Gran 2023-06-01 18:51:27 -07:00
parent df225a87b9
commit dc3a3a84f9
1 changed files with 4 additions and 4 deletions
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8
libguile/scm.h
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@ -1,7 +1,7 @@
#ifndef SCM_SCM_H
#define SCM_SCM_H
/* Copyright 1995-2004,2006-2015,2017-2019
/* Copyright 1995-2004,2006-2015,2017-2019,2023
Free Software Foundation, Inc.
This file is part of Guile.
@ -718,11 +718,11 @@ enum scm_tc8_tags
/* SCM_API is a macro prepended to all function and data definitions
which should be exported from libguile. */
#if defined BUILDING_LIBGUILE && defined HAVE_VISIBILITY
#if BUILDING_LIBGUILE && HAVE_VISIBILITY
# define SCM_API extern __attribute__((__visibility__("default")))
#elif defined BUILDING_LIBGUILE && defined _MSC_VER
#elif BUILDING_LIBGUILE && (defined _WIN32 || defined __CYGWIN__)
# define SCM_API __declspec(dllexport) extern
#elif defined _MSC_VER
#elif defined _WIN32 || defined __CYGWIN__
# define SCM_API __declspec(dllimport) extern
#else
# define SCM_API extern