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34 lines
861 B
Plaintext
34 lines
861 B
Plaintext
# Check if a given macro is defined in a certain header.
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# AST_C_DEFINE_CHECK([package], [macro name], [header file], [version])
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AC_DEFUN([AST_C_DEFINE_CHECK],
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[
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if test "x${PBX_$1}" != "x1"; then
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AC_MSG_CHECKING([for $2 in $3])
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saved_cppflags="${CPPFLAGS}"
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if test "x${$1_DIR}" != "x"; then
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$1_INCLUDE="-I${$1_DIR}/include"
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fi
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CPPFLAGS="${CPPFLAGS} ${$1_INCLUDE}"
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AC_COMPILE_IFELSE(
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[ AC_LANG_PROGRAM( [#include <$3>],
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[#if defined($2)
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int foo = 0;
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#else
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int foo = bar;
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#endif
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0
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])],
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[ AC_MSG_RESULT(yes)
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PBX_$1=1
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AC_DEFINE([HAVE_$1], 1, [Define if your system has the $1 headers.])
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m4_ifval([$4], [AC_DEFINE([HAVE_$1_VERSION], $4, [Define $1 headers version])])
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],
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[ AC_MSG_RESULT(no) ]
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)
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CPPFLAGS="${saved_cppflags}"
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fi
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AC_SUBST(PBX_$1)
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])
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