1dnl a bug-fixed version of autoconf 2.12. 2dnl first try to link library without $5, and only of that failed, 3dnl try with $5 if specified. 4dnl it adds $5 to $LIBS if it was needed -Erez. 5dnl AC_CHECK_LIB2(LIBRARY, FUNCTION [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND 6dnl [, OTHER-LIBRARIES]]]) 7AC_DEFUN([AMU_CHECK_LIB2], 8[AC_MSG_CHECKING([for $2 in -l$1]) 9dnl Use a cache variable name containing both the library and function name, 10dnl because the test really is for library $1 defining function $2, not 11dnl just for library $1. Separate tests with the same $1 and different $2s 12dnl may have different results. 13ac_lib_var=`echo $1['_']$2 | sed 'y%./+-%__p_%'` 14AC_CACHE_VAL(ac_cv_lib_$ac_lib_var, 15[ac_save_LIBS="$LIBS" 16 17# first try with base library, without auxiliary library 18LIBS="-l$1 $LIBS" 19AC_TRY_LINK(dnl 20ifelse([$2], [main], , dnl Avoid conflicting decl of main. 21[/* Override any gcc2 internal prototype to avoid an error. */ 22] 23[/* We use char because int might match the return type of a gcc2 24 builtin and then its argument prototype would still apply. */ 25char $2(); 26]), 27 [$2()], 28 eval "ac_cv_lib_$ac_lib_var=\"$1\"", 29 eval "ac_cv_lib_$ac_lib_var=no") 30 31# if OK, set to no auxiliary library, else try auxiliary library 32if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = no"; then 33 LIBS="-l$1 $5 $LIBS" 34 AC_TRY_LINK(dnl 35 ifelse([$2], [main], , dnl Avoid conflicting decl of main. 36 [/* Override any gcc2 internal prototype to avoid an error. */ 37 ] 38 [/* We use char because int might match the return type of a gcc2 39 builtin and then its argument prototype would still apply. */ 40 char $2(); 41 ]), 42 [$2()], 43 eval "ac_cv_lib_$ac_lib_var=\"$1 $5\"", 44 eval "ac_cv_lib_$ac_lib_var=no") 45fi 46 47LIBS="$ac_save_LIBS" 48])dnl 49ac_tmp="`eval echo '$''{ac_cv_lib_'$ac_lib_var'}'`" 50if test "${ac_tmp}" != no; then 51 AC_MSG_RESULT(-l$ac_tmp) 52 ifelse([$3], , 53[ 54 ac_tr_lib=HAVE_LIB`echo $1 | sed -e 's/[[^a-zA-Z0-9_]]/_/g' \ 55 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'` 56 57 AC_DEFINE_UNQUOTED($ac_tr_lib) 58 LIBS="-l$ac_tmp $LIBS" 59], [$3]) 60else 61 AC_MSG_RESULT(no) 62ifelse([$4], , , [$4 63])dnl 64fi 65 66]) 67