67 lines
2.1 KiB
Plaintext
67 lines
2.1 KiB
Plaintext
dnl a bug-fixed version of autoconf 2.12.
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dnl first try to link library without $5, and only of that failed,
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dnl try with $5 if specified.
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dnl it adds $5 to $LIBS if it was needed -Erez.
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dnl AC_CHECK_LIB2(LIBRARY, FUNCTION [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND
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dnl [, OTHER-LIBRARIES]]])
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AC_DEFUN(AMU_CHECK_LIB2,
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[AC_MSG_CHECKING([for $2 in -l$1])
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dnl Use a cache variable name containing both the library and function name,
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dnl because the test really is for library $1 defining function $2, not
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dnl just for library $1. Separate tests with the same $1 and different $2s
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dnl may have different results.
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ac_lib_var=`echo $1['_']$2 | sed 'y%./+-%__p_%'`
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AC_CACHE_VAL(ac_cv_lib_$ac_lib_var,
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[ac_save_LIBS="$LIBS"
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# first try with base library, without auxiliary library
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LIBS="-l$1 $LIBS"
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AC_TRY_LINK(dnl
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ifelse([$2], [main], , dnl Avoid conflicting decl of main.
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[/* Override any gcc2 internal prototype to avoid an error. */
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]
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[/* We use char because int might match the return type of a gcc2
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builtin and then its argument prototype would still apply. */
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char $2();
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]),
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[$2()],
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eval "ac_cv_lib_$ac_lib_var=\"$1\"",
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eval "ac_cv_lib_$ac_lib_var=no")
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# if OK, set to no auxiliary library, else try auxiliary library
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if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = no"; then
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LIBS="-l$1 $5 $LIBS"
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AC_TRY_LINK(dnl
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ifelse([$2], [main], , dnl Avoid conflicting decl of main.
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[/* Override any gcc2 internal prototype to avoid an error. */
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]
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[/* We use char because int might match the return type of a gcc2
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builtin and then its argument prototype would still apply. */
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char $2();
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]),
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[$2()],
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eval "ac_cv_lib_$ac_lib_var=\"$1 $5\"",
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eval "ac_cv_lib_$ac_lib_var=no")
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fi
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LIBS="$ac_save_LIBS"
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])dnl
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ac_tmp="`eval echo '$''{ac_cv_lib_'$ac_lib_var'}'`"
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if test "${ac_tmp}" != no; then
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AC_MSG_RESULT(-l$ac_tmp)
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ifelse([$3], ,
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[
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ac_tr_lib=HAVE_LIB`echo $1 | sed -e 's/[[^a-zA-Z0-9_]]/_/g' \
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-e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
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AC_DEFINE_UNQUOTED($ac_tr_lib)
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LIBS="-l$ac_tmp $LIBS"
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], [$3])
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else
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AC_MSG_RESULT(no)
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ifelse([$4], , , [$4
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])dnl
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fi
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])
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