Useful for accessing API's that are still brewing, e.g:
CROSS_PREFIX=aarch64-linux-gnu- \
CPPFLAGS=-I/home/alex/lsrc/qemu/risu.git/sve-headers/include \
../configure
Signed-off-by: Alex Bennée <alex.ben...@linaro.org>
---
README | 6 ++++++
configure | 1 +
2 files changed, 7 insertions(+)
diff --git a/README b/README
index 9946e6e..fbe408d 100644
--- a/README
+++ b/README
@@ -26,6 +26,12 @@ Most useful is
need this if you're not building on the target system
(Example: CROSS_PREFIX=arm-linux-gnueabihf- )
+Another useful flag is
+ CPPFLAGS= which specified pre-processor flags, usually -I statements
+ for specifying extra include paths. Use this is you need something
+ from new kernel headers not installed on your system.
+ (Example: CPPFLAGS=-I/path/to/sve-kernel-headers/include)
+
Passing --static will build a statically linked binary which is useful
if you don't want to mess around with a chroot to run the binary.
diff --git a/configure b/configure
index c622a5e..65e1819 100755
--- a/configure
+++ b/configure
@@ -111,6 +111,7 @@ generate_makefilein() {
echo "# Makefile.in - generated by the 'configure' script" > $m
echo "ARCH:=${ARCH}" >> $m
echo "CC:=${CC}" >> $m
+ echo "CPPFLAGS:=${CPPFLAGS}" >> $m
echo "LDFLAGS:=${LDFLAGS}" >> $m
echo "AS:=${AS}" >> $m
echo "OBJCOPY:=${OBJCOPY}" >> $m
--
2.14.2
