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Merge bitcoin/bitcoin#30590: build: Remove unused visibility checks

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bbcba09cd5 build: remove check for __declspec(dllexport) (fanquake)
37c9abdc43 build: remove check for __attribute__((visibility.. (fanquake)

Pull request description:

  These are unused (since libbitcoinconsensus / #29648), and the current CMake port doesn't quite match behaviour, such that there's no real point in doing the check. So rather than port anything, just remove it. If these are needed again in future (i.e for kernel or similar), they can be revisted, and it might be the case that build-system level checks will not be wanted.

ACKs for top commit:
  hebasto:
    ACK bbcba09cd5. I've verified that neither `HAVE_DEFAULT_VISIBILITY_ATTRIBUTE` nor `HAVE_DLLEXPORT_ATTRIBUTE` are used or evaluated in the current codebase.
  TheCharlatan:
    ACK bbcba09cd5
  willcl-ark:
    ACK bbcba09cd5

Tree-SHA512: 332f018c50a159d2cbfd2f9ce018538fa11cf06a94e27ed42146945b86645af5881095df39cadd2f775a8ae348ebfc949d54f7eb4b62264bf48119c9f9952c20
This commit is contained in:
merge-script 2024-08-06 17:44:43 +01:00
commit d7333ece15
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2 changed files with 0 additions and 32 deletions
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3
build_msvc/bitcoin_config.h.in
View file

@ -49,9 +49,6 @@
*/
#define HAVE_DECL_SETSID 0
/* Define if the dllexport attribute is supported. */
#define HAVE_DLLEXPORT_ATTRIBUTE 1
/* Define to the address where bug reports for this package should be sent. */
#define PACKAGE_BUGREPORT "https://github.com/bitcoin/bitcoin/issues"

29
configure.ac
View file

@ -943,35 +943,6 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
[ AC_MSG_RESULT([no])]
)
AC_MSG_CHECKING([for default visibility attribute])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
int foo(void) __attribute__((visibility("default")));
int main(){}
])],
[
AC_DEFINE([HAVE_DEFAULT_VISIBILITY_ATTRIBUTE], [1], [Define if the visibility attribute is supported.])
AC_MSG_RESULT([yes])
],
[
AC_MSG_RESULT([no])
if test "$use_reduce_exports" = "yes"; then
AC_MSG_ERROR([Cannot find a working visibility attribute. Use --disable-reduce-exports.])
fi
]
)
AC_MSG_CHECKING([for dllexport attribute])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
__declspec(dllexport) int foo(void);
int main(){}
])],
[
AC_DEFINE([HAVE_DLLEXPORT_ATTRIBUTE], [1], [Define if the dllexport attribute is supported.])
AC_MSG_RESULT([yes])
],
[AC_MSG_RESULT([no])]
)
dnl Check for different ways of gathering OS randomness
AC_MSG_CHECKING([for Linux getrandom function])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[