Add a new file find-libs.mk that can be included by builtin.mk files

to detect the presence of libraries in the base system.

The input variable is BUILDLINK_FIND_LIBS, which is a list of library
names, e.g. ncurses, iconv, etc., that will be sought in the base
system.  BUILDLINK_LIB_FOUND.<lib> is set to "yes" or "no" depending
on the result of the search.

An example use is:

BUILDLINK_FIND_LIBS:= intl iconv
.include "../../mk/buildlink3/find-libs.mk"
# ${BUILDLINK_LIB_FOUND.intl} and ${BUILDLINK_LIB_FOUND.iconv} are now
# either "yes" or "no".

1 files changed, 75 insertions, 0 deletions

diff --git a/mk/buildlink3/find-libs.mk b/mk/buildlink3/find-libs.mk
new file mode 100644
index 00000000000..538e852c7f5
--- /dev/null
+++ b/mk/buildlink3/find-libs.mk
@@ -0,0 +1,75 @@
+# $NetBSD: find-libs.mk,v 1.1 2005/05/24 03:44:04 jlam Exp $
+#
+# Copyright (c) 2005 The NetBSD Foundation, Inc.
+# All rights reserved.
+#
+# This code is derived from software contributed to The NetBSD Foundation
+# by Johnny C. Lam.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. All advertising materials mentioning features or use of this software
+#    must display the following acknowledgement:
+#        This product includes software developed by the NetBSD
+#        Foundation, Inc. and its contributors.
+# 4. Neither the name of The NetBSD Foundation nor the names of its
+#    contributors may be used to endorse or promote products derived
+#    from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+#
+# This is a "subroutine" that can be included to detect the presence of
+# libraries in the base system.
+#
+# The input variable is BUILDLINK_FIND_LIBS, which is a list of library
+# names, e.g. ncurses, iconv, etc., that will be sought in the base
+# system.  BUILDLINK_LIB_FOUND.<lib> is set to "yes" or "no" depending
+# on the result of the search.
+# 
+# An example use is:
+#
+# BUILDLINK_FIND_LIBS:=	intl iconv
+# .include "../../mk/buildlink3/find-libs.mk"
+# # ${BUILDLINK_LIB_FOUND.intl} and ${BUILDLINK_LIB_FOUND.iconv} are now
+# # either "yes" or "no".
+#
+
+.if empty(PKGSRC_USE_TOOLS:Mecho)
+PKGSRC_USE_TOOLS+=	echo
+.endif
+.if empty(PKGSRC_USE_TOOLS:Mtest)
+PKGSRC_USE_TOOLS+=	test
+.endif
+
+.for _lib_ in ${BUILDLINK_FIND_LIBS}
+.  if !defined(BUILDLINK_LIB_FOUND.${_lib_})
+BUILDLINK_LIB_FOUND.${_lib_}!=	\
+	if ${TEST} "`${ECHO} /usr/lib/lib${_lib_}.*`" != "/usr/lib/lib${_lib_}.*"; then \
+		${ECHO} yes;						\
+	elif ${TEST} "`${ECHO} /lib/lib${_lib_}.*`" != "/lib/lib${_lib_}.*"; then \
+		${ECHO} yes;						\
+	else								\
+		${ECHO} no;						\
+	fi
+.  endif
+MAKEVARS+=	BUILDLINK_LIB_FOUND.${_lib_}
+.endfor
+.undef _lib_