2021-04-17 19:14:21 +09:00
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dnl -*- Autoconf -*-
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2022-01-22 19:05:02 +09:00
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dnl
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dnl Autoconf 2.67 fails to detect `-Werror=old-style-definition` due
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dnl to the old style definition of `main`.
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m4_version_prereq([2.70], [], [
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2022-01-23 00:37:55 +09:00
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m4_defun([AC_LANG_PROGRAM(C)], m4_bpatsubst(m4_defn([AC_LANG_PROGRAM(C)]), [main ()], [main (void)]))
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2022-01-22 19:05:02 +09:00
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])dnl
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dnl
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2018-01-20 07:05:25 +00:00
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AC_DEFUN([RUBY_TRY_CFLAGS], [
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AC_MSG_CHECKING([whether ]$1[ is accepted as CFLAGS])
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RUBY_WERROR_FLAG([
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CFLAGS="[$]CFLAGS $1"
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2020-12-12 22:55:09 +09:00
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[$4]], [[$5]])],
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2018-01-20 07:05:25 +00:00
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[$2
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AC_MSG_RESULT(yes)],
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[$3
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AC_MSG_RESULT(no)])
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])
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])dnl
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