[Buildroot] [PATCH] package/spidermonkey: do not build the JavaScript shell, by default

[unixmania at gmail.com <unixmania@gmail.com>]

From: Carlos Santos <unixmania@gmail.com>

Add a configuration to enable the JavaScript shell (default off). So
far only libmozjs is required (by polkit) and the shell takes around
24MiB.

Signed-off-by: Carlos Santos <unixmania@gmail.com>
---
 ....in-install-shell-only-if-it-s-built.patch | 28 +++++++++++++++++++
 package/spidermonkey/Config.in                | 11 ++++++++
 package/spidermonkey/spidermonkey.mk          |  1 +
 3 files changed, 40 insertions(+)
 create mode 100644 package/spidermonkey/0001-js-src-Makefile.in-install-shell-only-if-it-s-built.patch

diff --git a/package/spidermonkey/0001-js-src-Makefile.in-install-shell-only-if-it-s-built.patch b/package/spidermonkey/0001-js-src-Makefile.in-install-shell-only-if-it-s-built.patch
new file mode 100644
index 0000000000..f6092af7ef
--- /dev/null
+++ b/package/spidermonkey/0001-js-src-Makefile.in-install-shell-only-if-it-s-built.patch
@@ -0,0 +1,28 @@
+From b5e4a9926cf50d12e9c5c05c6d1b161e5b662d62 Mon Sep 17 00:00:00 2001
+From: Carlos Santos <unixmania@gmail.com>
+Date: Sat, 7 Mar 2020 23:42:02 -0300
+Subject: [PATCH] js/src/Makefile.in: install shell only if it's built
+
+Prevents an installation error if we configure with --disable-js-shell.
+
+Signed-off-by: Carlos Santos <unixmania@gmail.com>
+---
+ js/src/Makefile.in | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/js/src/Makefile.in b/js/src/Makefile.in
+index 4ac9f48..9c8fb64 100644
+--- a/js/src/Makefile.in
++++ b/js/src/Makefile.in
+@@ -136,7 +136,7 @@ endif
+ 
+ install::
+ 	$(MAKE) -C build install
+-	$(MAKE) -C shell install
++	if [ -d shell ]; then $(MAKE) -C shell install; fi
+ 
+ ifdef HAVE_DTRACE
+ javascript-trace.h: $(srcdir)/devtools/javascript-trace.d
+-- 
+2.18.2
+
diff --git a/package/spidermonkey/Config.in b/package/spidermonkey/Config.in
index 5f12110626..e015e84ad2 100644
--- a/package/spidermonkey/Config.in
+++ b/package/spidermonkey/Config.in
@@ -37,6 +37,17 @@ config BR2_PACKAGE_SPIDERMONKEY
 
 	  https://developer.mozilla.org/en-US/docs/Mozilla/Projects/SpiderMonkey
 
+if BR2_PACKAGE_SPIDERMONKEY
+
+config BR2_PACKAGE_SPIDERMONKEY_JS_SHELL
+	bool "JS shell"
+	help
+	  Build the JavaScript shell.
+
+	  WARNING: increases target image size by around 24 MiB.
+
+endif
+
 comment "spidermonkey needs a glibc or musl toolchain with C++, wchar, dynamic library, NPTL, gcc >= 4.9"
 	depends on BR2_USE_MMU
 	depends on BR2_PACKAGE_SPIDERMONKEY_ARCH_SUPPORTS
diff --git a/package/spidermonkey/spidermonkey.mk b/package/spidermonkey/spidermonkey.mk
index 579dc7b864..9bd19b01d1 100644
--- a/package/spidermonkey/spidermonkey.mk
+++ b/package/spidermonkey/spidermonkey.mk
@@ -30,6 +30,7 @@ SPIDERMONKEY_CONF_OPTS = \
 	--host=$(GNU_HOST_NAME) \
 	--target=$(GNU_TARGET_NAME) \
 	--disable-jemalloc \
+	--$(if $(BR2_PACKAGE_SPIDERMONKEY_JS_SHELL),en,dis)able-js-shell \
 	--enable-shared-js \
 	--with-system-zlib \
 	--with-system-nspr \
-- 
2.18.2