[Buildroot] [PATCH 178/178] package/imagemagick: host SVG support needs host gcc >= 4.9

[Fabrice Fontaine]

host gcc >= 4.9 is needed since bump of harfbuzz to version 3.1.2 in
commit 6861933d22006fbe8c961a41506beac826881f33 to avoid the following
build failure:

In file included from ../src/hb-serialize.hh:36:0,
                 from ../src/hb-machinery.hh:37,
                 from ../src/hb-common.cc:30:
../src/hb-map.hh:67:18: error: 'is_trivially_copyable' is not a member of 'std'
   static_assert (std::is_trivially_copyable<K>::value, "");
                  ^

Fixes:
 - http://autobuild.buildroot.org/results/89e1194c1659d7e1af9db8ffe5feee770c448f76

Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
---
 package/imagemagick/Config.in.host | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/package/imagemagick/Config.in.host b/package/imagemagick/Config.in.host
index 671b0995dc..fe0ad9a748 100644
--- a/package/imagemagick/Config.in.host
+++ b/package/imagemagick/Config.in.host
@@ -17,6 +17,7 @@ if BR2_PACKAGE_HOST_IMAGEMAGICK
 config BR2_PACKAGE_HOST_IMAGEMAGICK_SVG
 	bool "SVG support"
 	depends on BR2_PACKAGE_HOST_RUSTC_ARCH_SUPPORTS # host-librsvg
+	depends on BR2_HOST_GCC_AT_LEAST_4_9 # host-pango -> host-harfbuzz
 	help
 	  Say 'y' here is you need ImageMagick tools (like convert)
 	  to support SVG.
@@ -24,4 +25,7 @@ config BR2_PACKAGE_HOST_IMAGEMAGICK_SVG
 	  This is not enabled by default, as it brings quite a few
 	  extra dependencies, and thus extra build time.
 
+comment "SVG support needs a toolchain w/ host gcc >= 4.9"
+	depends on !BR2_HOST_GCC_AT_LEAST_4_9
+
 endif
-- 
2.33.0