This Makefile fragment is meant to be included by packages that

require a libjpeg implementation.  jpeg.buildlink3.mk will:

      * set JPEGBASE to the base directory of the libjpeg files;
      * set JPEG_TYPE to the libjpeg implementation used.

There are three variables that can be used to tweak the selection of
the libjpeg implementation:

JPEG_DEFAULT is a user-settable variable whose value is the default
      libjpeg implementation to use.

JPEG_ACCEPTED is a package-settable list of libjpeg implementations
      that may be used by the package.

This .mk is broadly based on fam.buildlink3.mk,v 1.7, and
currently supports selection between the default "graphics/jpeg"
and the alternative "graphics/libjpeg-turbo".

1 files changed, 58 insertions, 0 deletions

diff --git a/mk/jpeg.buildlink3.mk b/mk/jpeg.buildlink3.mk
new file mode 100644
index 00000000000..5967f0d654b
--- /dev/null
+++ b/mk/jpeg.buildlink3.mk
@@ -0,0 +1,58 @@
+# $NetBSD: jpeg.buildlink3.mk,v 1.1 2010/12/19 11:22:59 dsainty Exp $
+#
+# This Makefile fragment is meant to be included by packages that
+# require a libjpeg implementation.  jpeg.buildlink3.mk will:
+#
+#	* set JPEGBASE to the base directory of the libjpeg files;
+#	* set JPEG_TYPE to the libjpeg implementation used.
+#
+# There are three variables that can be used to tweak the selection of
+# the libjpeg implementation:
+#
+# JPEG_DEFAULT is a user-settable variable whose value is the default
+#	libjpeg implementation to use.
+#
+# JPEG_ACCEPTED is a package-settable list of libjpeg implementations
+#	that may be used by the package.
+#
+
+MK_JPEG_BUILDLINK3_MK:=	${MK_JPEG_BUILDLINK3_MK}+
+
+.include "bsd.fast.prefs.mk"
+
+.if !empty(MK_JPEG_BUILDLINK3_MK:M+)
+
+# This is an exhaustive list of all of the libjpeg implementations
+# that may be used with jpeg.buildlink3.mk, in order of precedence.
+#
+_JPEG_PKGS?=	jpeg libjpeg-turbo
+
+JPEG_DEFAULT?=	jpeg
+JPEG_ACCEPTED?=	${_JPEG_PKGS}
+
+_JPEG_DEFAULT=	${JPEG_DEFAULT}
+_JPEG_ACCEPTED=	${JPEG_ACCEPTED}
+
+_JPEG_TYPE?=	${_JPEG_DEFAULT}
+
+.  if !empty(_JPEG_ACCEPTED:M${_JPEG_TYPE})
+JPEG_TYPE=	${_JPEG_TYPE}
+.  else
+JPEG_TYPE=	none
+.  endif
+
+BUILD_DEFS+=		JPEG_DEFAULT
+BUILD_DEFS_EFFECTS+=	JPEGBASE JPEG_TYPE
+
+.if ${JPEG_TYPE} == "none"
+PKG_FAIL_REASON=	\
+	"${_JPEG_TYPE} is not an acceptable libjpeg type for ${PKGNAME}."
+.elif ${JPEG_TYPE} == "jpeg"
+.  include "../../graphics/jpeg/buildlink3.mk"
+.elif ${JPEG_TYPE} == "libjpeg-turbo"
+.  include "../../graphics/libjpeg-turbo/buildlink3.mk"
+.endif
+
+JPEGBASE=	${BUILDLINK_PREFIX.${JPEG_TYPE}}
+
+.endif	# MK_JPEG_BUILDLINK3_MK