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arangodb/m4/ax_cxx_check_lib.m4

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dnl @synopsis AX_CXX_CHECK_LIB(libname, include, functioname, action-if, action-if-not, libs)
AC_DEFUN([AX_CXX_CHECK_LIB],
[m4_ifval([$4], , [AH_CHECK_LIB([$1])])dnl
AS_LITERAL_IF([$1],
[AS_VAR_PUSHDEF([ac_Lib], [ac_cv_lib_$1_$3])],
[AS_VAR_PUSHDEF([ac_Lib], [ac_cv_lib_$1''_$3])])dnl
AC_CACHE_CHECK([for $3 in -l$1], ac_Lib,
[ac_check_lib_save_LIBS=$LIBS
LIBS="-l$1 $6 $LIBS"
AC_LINK_IFELSE([AC_LANG_PROGRAM([
$2
],
[
$3
])],
[AS_VAR_SET(ac_Lib, yes)],
[AS_VAR_SET(ac_Lib, no)])
LIBS=$ac_check_lib_save_LIBS])
AS_IF([test AS_VAR_GET(ac_Lib) = yes],
[m4_default([$4], [AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_LIB$1)) LIBS="-l$1 $LIBS"])],
[$5])dnl
AS_VAR_POPDEF([ac_Lib])dnl
])# AC_CHECK_LIB