configure: remove use of RETSIGTYPE

This was previously defined by the obsolete AC_TYPE_SIGNAL macro,
which was removed in 2682e5f5. The deprecation text says

> Your code may safely assume C89 semantics that RETSIGTYPE is void.

So, remove it and just use void instead.

Closes #6861
This commit is contained in:
Michael Forney 2021-04-07 02:37:15 -07:00 committed by Daniel Stenberg
parent 694eab18bc
commit 812fce9dcf
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19 changed files with 12 additions and 85 deletions

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@ -132,7 +132,6 @@ if(NOT UNIX)
set(HAVE_GETADDRINFO 0)
endif()
set(STDC_HEADERS 1)
set(RETSIGTYPE_TEST 1)
set(HAVE_SIGACTION 0)
set(HAVE_MACRO_SIGSETJMP 0)