[U-Boot] [PATCH 10/17] sandbox: Allo sdl-config to be overridden

[Simon Glass]

When cross-compiling, sometimes sdl-config must come from a different path
from the default. Add a way to override it, by adding SDL_CONFIG to the
environment before building U-Boot.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 arch/sandbox/config.mk       | 5 +++--
 board/sandbox/README.sandbox | 7 +++++++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/arch/sandbox/config.mk b/arch/sandbox/config.mk
index 31a12db103d..05fbbd7bcc7 100644
--- a/arch/sandbox/config.mk
+++ b/arch/sandbox/config.mk
@@ -5,14 +5,15 @@ PLATFORM_CPPFLAGS += -D__SANDBOX__ -U_FORTIFY_SOURCE
 PLATFORM_CPPFLAGS += -DCONFIG_ARCH_MAP_SYSMEM
 PLATFORM_CPPFLAGS += -fPIC
 PLATFORM_LIBS += -lrt
+SDL_CONFIG ?= sdl-config
 
 # Define this to avoid linking with SDL, which requires SDL libraries
 # This can solve 'sdl-config: Command not found' errors
 ifneq ($(NO_SDL),)
 PLATFORM_CPPFLAGS += -DSANDBOX_NO_SDL
 else
-PLATFORM_LIBS += $(shell sdl-config --libs)
-PLATFORM_CPPFLAGS += $(shell sdl-config --cflags)
+PLATFORM_LIBS += $(shell $(SDL_CONFIG) --libs)
+PLATFORM_CPPFLAGS += $(shell $(SDL_CONFIG) --cflags)
 endif
 
 cmd_u-boot__ = $(CC) -o $@ -Wl,-T u-boot.lds $(u-boot-init) \
diff --git a/board/sandbox/README.sandbox b/board/sandbox/README.sandbox
index 48c1e2b9e7b..5e8fa58ba29 100644
--- a/board/sandbox/README.sandbox
+++ b/board/sandbox/README.sandbox
@@ -435,6 +435,13 @@ board_init_f() and board_init_r().
 This approach can be used on normal boards as well as sandbox.
 
 
+SDL_CONFIG
+----------
+
+If sdl-config is on a different path from the default, set the SDL_CONFIG
+environment variable to the correct pathname before building U-Boot.
+
+
 Testing
 -------
 
-- 
2.21.0.1020.gf2820cf01a-goog