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authorMike Frysinger <vapier@gentoo.org>2013-01-26 13:44:47 -0500
committerMike Frysinger <vapier@gentoo.org>2013-01-26 13:46:55 -0500
commitbb701610aaa645644bfa046b30711fc5acb7c6c2 (patch)
tree2dfaa3a9bb08aec2a92f6e294b2176295b360ccf
parent406b1aba4b47c8313f764c68b79eefb697ef5525 (diff)
buildsys: allow the toolchain to search its dirs for kernel headers
Setting KERNEL_HEADERS up to the exact path all the time is a pita, especially when the toolchain is often times already configured to do the right thing. So if the user has set that to "", don't force any specific paths. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
-rw-r--r--extra/Configs/Config.in.arch4
-rwxr-xr-xextra/scripts/gen_bits_syscall_h.sh7
2 files changed, 9 insertions, 2 deletions
diff --git a/extra/Configs/Config.in.arch b/extra/Configs/Config.in.arch
index e97786b81..6d93433dc 100644
--- a/extra/Configs/Config.in.arch
+++ b/extra/Configs/Config.in.arch
@@ -192,7 +192,7 @@ config UCLIBC_HAS_LONG_DOUBLE_MATH
config KERNEL_HEADERS
string "Linux kernel header location"
- default "/usr/include"
+ default ""
help
The kernel source you use to compile with should be the same
as the Linux kernel you run your apps on. uClibc doesn't even
@@ -203,6 +203,8 @@ config KERNEL_HEADERS
but then run on Linux 2.0.x, lchown will be compiled into uClibc,
but won't work at all. You have been warned.
+ If you don't set this, we'll assume the toolchain can find them.
+
config UCLIBC_UCLINUX_BROKEN_MUNMAP
bool
depends on !ARCH_USE_MMU
diff --git a/extra/scripts/gen_bits_syscall_h.sh b/extra/scripts/gen_bits_syscall_h.sh
index f6353baa2..4d42f6949 100755
--- a/extra/scripts/gen_bits_syscall_h.sh
+++ b/extra/scripts/gen_bits_syscall_h.sh
@@ -15,7 +15,12 @@
#
# Warning!!! This does _no_ error checking!!!
-INCLUDE_OPTS="-nostdinc -I${KERNEL_HEADERS}"
+if [ "${KERNEL_HEADERS:-/}" != "/" ] ; then
+ INCLUDE_OPTS="-nostdinc -I${KERNEL_HEADERS}"
+else
+ # Let the toolchain use its configure paths.
+ INCLUDE_OPTS=
+fi
case $CC in
*icc*) CC_SYSNUM_ARGS="-dM" ;;