19 lines
529 B
Plaintext
19 lines
529 B
Plaintext
#
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# Check for supported __attribute__ features
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#
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# AC_C_ATTRIBUTE(FEATURE, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
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#
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AC_DEFUN([AC_C_ATTRIBUTE],
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[AS_VAR_PUSHDEF([CACHEVAR], [ax_cv_c_attribute_$1])dnl
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AC_CACHE_CHECK([for __attribute__ (($1))],
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CACHEVAR,[
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
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[[ void foo(void) __attribute__ (($1)); ]])],
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[AS_VAR_SET(CACHEVAR, [yes])],
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[AS_VAR_SET(CACHEVAR, [no])])])
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AS_VAR_IF(CACHEVAR,yes,
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[m4_default([$2], :)],
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[m4_default([$3], :)])
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AS_VAR_POPDEF([CACHEVAR])dnl
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])dnl
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