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openmpi/config/opal_search_libs.m4
Jeff Squyres 66aeadacff opal_search_libs: correctly AC_DEFINE results of search
1. It is not sufficient to put the result of m4_toupper() in a
variable and use that variable as the variable name in
AC_DEFINE_UNQUOTED.  Instead, just use m4_toupper() directly in
AC_DEFINE_UNQUOTED.  Also, save the result value in a "permanent"
variable that isn't erased, just in case autoconf decides to be lazy
about instantiating the body AC_DEFINE_UNQUOTED and move it later
(this is probably overkill :-) ).
1. Use the OMPI Way of always defining macros (to 0 or 1).  Then also
slightly change the logic in util/basename.c to just check
OPAL_HAVE_DIRNAME (because it will always be defined).

Refs trac:4894

This commit was SVN r32723.

The following Trac tickets were found above:
  Ticket 4894 --> https://svn.open-mpi.org/trac/ompi/ticket/4894
2014-09-13 00:28:30 +00:00

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dnl -*- shell-script -*-
dnl
dnl Copyright (c) 2013-2014 Cisco Systems, Inc. All rights reserved.
dnl Copyright (c) 2014 Intel, Inc. All rights reserved.
dnl $COPYRIGHT$
dnl
dnl Additional copyrights may follow
dnl
dnl $HEADER$
dnl
# OPAL SEARCH_LIBS_CORE(func, list-of-libraries,
# action-if-found, action-if-not-found,
# other-libraries)
#
# Wrapper around AC SEARCH_LIBS. If a library ends up being added to
# $LIBS, then also add it to the wrapper LIBS list (so that it is
# added to the link command line for the static link case).
#
# NOTE: COMPONENTS SHOULD NOT USE THIS MACRO! Components should use
# OPAL_SEARCH_LIBS_COMPONENT. The reason why is because this macro
# calls OPAL_WRAPPER_FLAGS_ADD -- see big comment in
# opal_setup_wrappers.m4 for an explanation of why this is bad).
AC_DEFUN([OPAL_SEARCH_LIBS_CORE],[
m4_ifdef([mca_component_configure_active],
[m4_fatal([*** OPAL_SEARCH_LIBS_CORE cannot be called from a component configure.m4])])
OPAL_VAR_SCOPE_PUSH([LIBS_save add])
LIBS_save=$LIBS
AC_SEARCH_LIBS([$1], [$2],
[ # Found it! See if anything was added to LIBS
add=`printf '%s\n' "$LIBS" | sed -e "s/$LIBS_save$//"`
AS_IF([test -n "$add"],
[OPAL_WRAPPER_FLAGS_ADD([LIBS], [$add])])
opal_have_$1=1
$3],
[opal_have_$1=0
$4], [$5])
AC_DEFINE_UNQUOTED([OPAL_HAVE_]m4_toupper($1), [$opal_have_$1],
[whether $1 is found and available])
OPAL_VAR_SCOPE_POP
])dnl
# OPAL SEARCH_LIBS_COMPONENT(prefix, func, list-of-libraries,
# action-if-found, action-if-not-found,
# other-libraries)
#
# Same as OPAL SEARCH_LIBS_CORE, above, except that we don't call OPAL
# WRAPPER_FLAGS_ADD. Instead, we add it to the ${prefix}_LIBS
# variable (i.e., $prefix is usually "framework_component", such as
# "fbtl_posix").
AC_DEFUN([OPAL_SEARCH_LIBS_COMPONENT],[
m4_ifndef([mca_component_configure_active],
[m4_fatal([*** OPAL_SEARCH_LIBS_COMPONENT can only be called from a component configure.m4])])
OPAL_VAR_SCOPE_PUSH([LIBS_save add])
LIBS_save=$LIBS
AC_SEARCH_LIBS([$2], [$3],
[ # Found it! See if anything was added to LIBS
add=`printf '%s\n' "$LIBS" | sed -e "s/$LIBS_save$//"`
AS_IF([test -n "$add"],
[OPAL_FLAGS_APPEND_UNIQ($1_LIBS, [$add])])
$1_have_$2=1
$4],
[$1_have_$2=0
$5], [$6])
AC_DEFINE_UNQUOTED([OPAL_HAVE_]m4_toupper($1), [$$1_have_$2],
[whether $1 is found and available])
OPAL_VAR_SCOPE_POP
])dnl