[yocto] [meta-mono][PATCH 6/7] Allow PACKAGECONFIG to configure libgdiplus

[Barry Grussling]

This changeset allows PACKAGECONFIG to determine the configuration of
libgdiplus as it applies to jpeg, gif, exif, and tiff.

Signed-off-by: Barry Grussling <barry at grussling.com>
---
 README.md                                    | 14 ++++++++++++--
 recipes-mono/libgdiplus/libgdiplus_2.10.8.bb |  8 +++++++-
 2 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index 2adac04..0e25669 100644
--- a/README.md
+++ b/README.md
@@ -40,9 +40,19 @@ Feedback on testing with armhf would be appreciated and incorporated into this R
 
 ## Layer Dependencies
 
-The libgdiplus recipe has a dependency on the giflib recipe which is provided by the meta-oe layer.
+The libgdiplus recipe has a soft dependency on the giflib recipe which is provided by the meta-oe layer.
+These dependencies can be controlled using the PACKAGECONFIG feature of yocto.  libgdiplus
+recognizes the following options:
 
-Thus if this recipe is included in an image, for example when building core-image-mono, then
+"jpeg exif gif tiff"
+
+These can be controlled via the .bbappend mechanism or by adding:
+PACKAGECONFIG_pn-mono = ""
+PACKAGECONFIG_pn-mono-native = ""
+
+directives to the local.conf
+
+If this recipe is included in an image with gif enabled, for example when building core-image-mono, then
 conf/bblayers needs to be modified to include meta-oe, e.g.
 
 BBLAYERS = " \
diff --git a/recipes-mono/libgdiplus/libgdiplus_2.10.8.bb b/recipes-mono/libgdiplus/libgdiplus_2.10.8.bb
index fecf7dc..75adfbf 100644
--- a/recipes-mono/libgdiplus/libgdiplus_2.10.8.bb
+++ b/recipes-mono/libgdiplus/libgdiplus_2.10.8.bb
@@ -6,6 +6,12 @@ SECTION = "libs"
 LICENSE = "MIT"
 LIC_FILES_CHKSUM = "file://COPYING;md5=fe7364dfce9f3689eb6995e7cdd56879"
 
+PACKAGECONFIG ??= "jpeg tiff gif exif"
+PACKAGECONFIG[jpeg] = "--with-libjpeg,--without-libjpeg,jpeg"
+PACKAGECONFIG[tiff] = "--with-libtiff,--without-libtiff,tiff"
+PACKAGECONFIG[gif] = "--with-libgif,--without-libgif,libgif"
+PACKAGECONFIG[exif] = "--with-libexif,--without-libexif,libexif"
+
 SRC_URI = "https://github.com/mono/libgdiplus/archive/${PV}.tar.gz \
            file://libgdiplus-2.10/cairo/configure.in.diff \
            file://libgdiplus-2.10/libgdiplus-2.10.1-libpng15.patch \
@@ -14,7 +20,7 @@ SRC_URI = "https://github.com/mono/libgdiplus/archive/${PV}.tar.gz \
 
 inherit autotools pkgconfig
 
-DEPENDS =+ "cairo freetype fontconfig libxft libpng jpeg tiff giflib libexif"
+DEPENDS =+ "cairo freetype fontconfig libxft libpng"
 
 SRC_URI[md5sum] = "6fd45bbb9843f5a8851b5f44e2a5dd04"
 SRC_URI[sha256sum] = "45c533dc72af0a24d1d3a8097873f5fe1670107fe7e6d08fb71ae586c87a0f1d"
-- 
2.10.2