31a1dec1f5
Some installations mount /tmp with the 'noexec' option, which prevents
running the program generated there to check the kernel headers.
Avoid the problem by generating the program under $(BUILD_DIR), passed
as the first argument to check-kernel-headers.sh.
We could globally export a TMPDIR environment variable with some path
under $(BUILD_DIR) but such solution would be too intrusive, depriving
the user from the freedom to set TMPDIR at his will (or needs).
Fixes: https://bugs.busybox.net/show_bug.cgi?id=12241
Signed-off-by: Carlos Santos <unixmania@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 6136765b23)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
43 lines
1.1 KiB
Bash
Executable File
43 lines
1.1 KiB
Bash
Executable File
#!/bin/sh
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BUILDDIR="${1}"
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SYSROOT="${2}"
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# Make sure we have enough version components
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HDR_VER="${3}.0.0"
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HDR_M="${HDR_VER%%.*}"
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HDR_V="${HDR_VER#*.}"
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HDR_m="${HDR_V%%.*}"
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EXEC="$(mktemp -p "${BUILDDIR}" -t .check-headers.XXXXXX)"
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# We do not want to account for the patch-level, since headers are
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# not supposed to change for different patchlevels, so we mask it out.
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# This only applies to kernels >= 3.0, but those are the only one
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# we actually care about; we treat all 2.6.x kernels equally.
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${HOSTCC} -imacros "${SYSROOT}/usr/include/linux/version.h" \
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-x c -o "${EXEC}" - <<_EOF_
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#include <stdio.h>
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#include <stdlib.h>
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int main(int argc __attribute__((unused)),
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char** argv __attribute__((unused)))
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{
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if((LINUX_VERSION_CODE & ~0xFF)
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!= KERNEL_VERSION(${HDR_M},${HDR_m},0))
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{
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printf("Incorrect selection of kernel headers: ");
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printf("expected %d.%d.x, got %d.%d.x\n", ${HDR_M}, ${HDR_m},
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((LINUX_VERSION_CODE>>16) & 0xFF),
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((LINUX_VERSION_CODE>>8) & 0xFF));
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return 1;
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}
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return 0;
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}
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_EOF_
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"${EXEC}"
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ret=${?}
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rm -f "${EXEC}"
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exit ${ret}
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