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220a9ecba1
This incorporates: 2018-01-01 maint: Run 'make update-copyright' 2017-12-29 Add cross-compilation results for GNU/Hurd. 2017-12-12 explicit_bzero: port to macOS + Clang 9.0.0
32 lines
942 B
Plaintext
32 lines
942 B
Plaintext
# Check for GNU-style execinfo.h.
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dnl Copyright 2012-2018 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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AC_DEFUN([gl_EXECINFO_H],
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[
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AC_CHECK_HEADERS_ONCE([execinfo.h])
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LIB_EXECINFO=''
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EXECINFO_H='execinfo.h'
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if test $ac_cv_header_execinfo_h = yes; then
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gl_saved_libs=$LIBS
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AC_SEARCH_LIBS([backtrace_symbols_fd], [execinfo],
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[test "$ac_cv_search_backtrace_symbols_fd" = "none required" ||
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LIB_EXECINFO=$ac_cv_search_backtrace_symbols_fd])
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LIBS=$gl_saved_libs
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test "$ac_cv_search_backtrace_symbols_fd" = no || EXECINFO_H=''
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fi
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if test -n "$EXECINFO_H"; then
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AC_LIBOBJ([execinfo])
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fi
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AC_SUBST([EXECINFO_H])
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AC_SUBST([LIB_EXECINFO])
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AM_CONDITIONAL([GL_GENERATE_EXECINFO_H], [test -n "$EXECINFO_H"])
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])
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