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r15451: Rewrite AC_LIBTESTFUNC so that it works like the callers

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of it expect.
(This used to be commit 7a0c4f4997f359645a9113e19a8831bde7f9ec58)
This commit is contained in:
James Peach 2006-05-05 07:42:34 +00:00 committed by Gerald (Jerry) Carter
parent 4d55a81958
commit 23a108c5cd
1 changed files with 24 additions and 12 deletions
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36
source3/aclocal.m4 vendored
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@ -104,20 +104,32 @@ AC_DEFUN(AC_HAVE_DECL,
])
dnl Check for a function in a library, but don't
dnl keep adding the same library to the LIBS variable.
dnl Check whether the function is available in the current
dnl LIBS before adding the library. This prevents us spuriously
dnl finding symbols that are in libc.
dnl AC_LIBTESTFUNC(lib,func)
dnl Check for a function in a library, but don't keep adding the same library
dnl to the LIBS variable. Check whether the function is available in the
dnl current LIBS before adding the library which prevents us spuriously
dnl adding libraries for symbols that are in libc. On success, this ensures that
dnl HAVE_FOO is defined.
AC_LIBTESTFUNC(lib,func)
AC_DEFUN(AC_LIBTESTFUNC,
[
AC_CHECK_FUNCS($2, [],
[ case "$LIBS" in
*-l$1*) AC_CHECK_FUNCS($2) ;;
*) AC_CHECK_LIB($1, $2)
AC_CHECK_FUNCS($2)
;;
AC_CHECK_FUNCS($2,
[
# $2 was found in libc or existing $LIBS
AC_DEFINE(translit([HAVE_$2], [a-z], [A-Z]), 1,
[Whether $2 is available])
],
[
# $2 was not found, try adding lib$1
case " $LIBS " in
*\ -l$1\ *) ;;
*) AC_CHECK_LIB($1, $2,
[
AC_DEFINE(translit([HAVE_$2], [a-z], [A-Z]), 1,
[Whether $2 is available])
LIBS="-l$1 $LIBS"
],
[])
;;
esac
])
])