[Buildroot] [PATCH] package/imlib2: add zlib dependency

[yegorslists at googlemail.com]

From: Yegor Yefremov <yegorslists at googlemail.com>

The demo programs, which have always been built and are still enabled by
default, gained a zlib dependency in imlib2 1.12.3: upstream commit
f8a451043871 ("imlib2_load: Add crc32 printout") started using zlib's
crc32() in imlib2_load, and 31006b425e11 ("imlib2_view: Optionally show
crc32 of image data") did the same for imlib2_view. Both hardcoded -lz.

Upstream commit b9555030dace ("autofoo: don't hardcode zlib flags"),
first released in 1.12.4, replaced -lz with $(ZLIB_LIBS) and added an
unconditional PKG_CHECK_MODULES(ZLIB, zlib) to the demo programs branch
of configure, turning the previously silent link-time requirement into a
configure failure:

  checking for zlib... no
  configure: error: Package requirements (zlib) were not met:

  Package 'zlib' not found

As Buildroot went straight from 1.7.3 to 1.12.5 the intermediate state
was never packaged, but the dependency has in fact been missing since the
crc32 support landed.

Fixes: https://autobuild.buildroot.org/results/4e05404c353ef985d74757d0b1ec3eda2cdff523/

Signed-off-by: Yegor Yefremov <yegorslists at googlemail.com>
---
 package/imlib2/Config.in | 1 +
 package/imlib2/imlib2.mk | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/package/imlib2/Config.in b/package/imlib2/Config.in
index c47178f174..46edf375f3 100644
--- a/package/imlib2/Config.in
+++ b/package/imlib2/Config.in
@@ -5,6 +5,7 @@ config BR2_PACKAGE_IMLIB2
 	bool "imlib2"
 	depends on !BR2_STATIC_LIBS # dlopen()
 	select BR2_PACKAGE_FREETYPE
+	select BR2_PACKAGE_ZLIB
 	help
 	  Imlib 2 is the successor to Imlib. This library provides
 	  routines to load, save and render images in various formats.
diff --git a/package/imlib2/imlib2.mk b/package/imlib2/imlib2.mk
index 5ad89289a4..c650981501 100644
--- a/package/imlib2/imlib2.mk
+++ b/package/imlib2/imlib2.mk
@@ -12,7 +12,7 @@ IMLIB2_LICENSE_FILES = COPYING COPYING-PLAIN
 IMLIB2_CPE_ID_VENDOR = enlightenment
 
 IMLIB2_INSTALL_STAGING = YES
-IMLIB2_DEPENDENCIES = host-pkgconf freetype
+IMLIB2_DEPENDENCIES = host-pkgconf freetype zlib
 IMLIB2_CONF_OPTS = --with-freetype-config=$(STAGING_DIR)/usr/bin/freetype-config
 
 ifeq ($(BR2_PACKAGE_IMLIB2_X),y)
-- 
2.34.1