[Buildroot] [git commit branch/2018.02.x] libcurl: add brotli optional dependency

[Peter Korsgaard]

commit: https://git.buildroot.net/buildroot/commit/?id=f75f370c829381c8e02ab4e5e57e9f5901ac0785
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2018.02.x

The brotli package has recently been added to Buildroot. Add brotli an
an optional dependency to libcurl to make the build consistent.

It turns out that libcurl configure script uses pkg-config to figure
out link libraries only when --with-brotli is explicitly set. So this
also fixes static build failure.

Fixes:
http://autobuild.buildroot.net/results/64b/64bc0dfe284206390ae0680b94c0876863a3c0f3/
http://autobuild.buildroot.net/results/233/23376d8653dea6361e42b0f17b6aaab3c14d99cf/
http://autobuild.buildroot.net/results/b19/b198db4b69e18e6d01ec95aae9c6096c1912dd9c/

Cc: Adrian Perez de Castro <aperez at igalia.com>
Cc: Matt Weber <matthew.weber at rockwellcollins.com>
Signed-off-by: Baruch Siach <baruch at tkos.co.il>
Reviewed-by: Matt Weber <matthew.weber at rockwellcollins.com>
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
(cherry picked from commit e7d658e0291b78553bf4eca704f0d0202bcf031f)
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
---
 package/libcurl/libcurl.mk | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/package/libcurl/libcurl.mk b/package/libcurl/libcurl.mk
index 92c1a1fb7a..7993062c6e 100644
--- a/package/libcurl/libcurl.mk
+++ b/package/libcurl/libcurl.mk
@@ -75,6 +75,13 @@ else
 LIBCURL_CONF_OPTS += --without-libssh2
 endif
 
+ifeq ($(BR2_PACKAGE_BROTLI),y)
+LIBCURL_DEPENDENCIES += brotli
+LIBCURL_CONF_OPTS += --with-brotli
+else
+LIBCURL_CONF_OPTS += --without-brotli
+endif
+
 define LIBCURL_FIX_DOT_PC
 	printf 'Requires: openssl\n' >>$(@D)/libcurl.pc.in
 endef