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build: Assume __attribute__((cleanup)) always works

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All recent compilers support this (except MS compilers which we don't
care about).  Assume it is supported.  We test it in ./configure and
hard fail if it doesn't work.

We still define HAVE_ATTRIBUTE_CLEANUP but you can now assume it is
always defined and don't have to check it.
This commit is contained in:
Richard W.M. Jones
2024-10-18 21:52:21 +01:00
parent 0f489f8eec
commit e37768d889
11 changed files with 3 additions and 76 deletions
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7
m4/guestfs-c.m4
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@@ -109,15 +109,12 @@ main (int argc, char *argv[])
AC_MSG_RESULT([yes])
AC_DEFINE([HAVE_ATTRIBUTE_CLEANUP],[1],[Define to 1 if '__attribute__((cleanup(...)))' works with this compiler.])
],[
AC_MSG_WARN(
AC_MSG_ERROR(
['__attribute__((cleanup(...)))' does not work.
You may not be using a sufficiently recent version of GCC or CLANG, or
you may be using a C compiler which does not support this attribute,
or the configure test may be wrong.
The code will still compile, but is likely to leak memory and other
resources when it runs.])])
or the configure test may be wrong.])])
dnl restore CFLAGS
CFLAGS="${acx_nbdkit_save_CFLAGS}"