51 lines
1.3 KiB
Plaintext
51 lines
1.3 KiB
Plaintext
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dnl Decide whether or not to use the persistent memory allocator
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# Copyright (C) 2022 Free Software Foundation, Inc.
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# This file is free software; the Free Software Foundation
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# gives unlimited permission to copy and/or distribute it,
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# with or without modifications, as long as this notice is preserved.
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AC_DEFUN([GAWK_USE_PERSISTENT_MALLOC],
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[
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AC_REQUIRE([AX_CHECK_COMPILE_FLAG])
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AC_CHECK_SIZEOF([void *])
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use_persistent_malloc=no
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if test "$SKIP_PERSIST_MALLOC" = no && test $ac_cv_sizeof_void_p -eq 8
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then
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AC_CHECK_FUNC([mmap])
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AC_CHECK_FUNC([munmap])
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if test $ac_cv_func_mmap = yes && test $ac_cv_func_munmap = yes
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then
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use_persistent_malloc=yes
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case $host_os in
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linux-*)
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AX_CHECK_COMPILE_FLAG([-no-pie],
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[LDFLAGS="${LDFLAGS} -no-pie"
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export LDFLAGS])
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;;
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*darwin*)
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LDFLAGS="${LDFLAGS} -Xlinker -no_pie"
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export LDFLAGS
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;;
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*cygwin* | *CYGWIN* | *solaris2.11* )
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true # nothing do, Cygwin and Solaris exes are not PIE
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;;
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# Other OS's go here...
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*)
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# For now, play it safe
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use_persistent_malloc=no
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;;
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esac
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else
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use_persistent_malloc=no
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fi
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fi
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AM_CONDITIONAL([USE_PERSISTENT_MALLOC], [test "$use_persistent_malloc" = "yes"])
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if test "$use_persistent_malloc" = "yes"
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then
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AC_DEFINE(USE_PERSISTENT_MALLOC, 1, [Define to 1 if we can use the pma allocator])
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fi
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])
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