Redefinition errors between libiio and kernel iio include files #758
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gwendalcr
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Nov 15, 2021
To prevent conflicts when iio.h and /usr/include/linux/iio/types.h are both included, rename iio_chan_type libiio_chan_type. Check CI/travis/check_kernel.sh still works. Fixes analogdevicesinc#758. Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
gwendalcr
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Nov 15, 2021
enum iio_chan_type and iio_modifier are already defined in /usr/include/linux/iio/types.h on linux systems. If an application needs to include both (to support iio events for instance), compiler will complains these enums are defined twice. This patch is not without problem: - it works only if compiler supports __has_include (C++17, not 11). - linux system must have latest kernel-headers installed: IIO_MOD_O2 modifier has been added to linux 5.9 kernel. Alter CI/travis/check_kernel.sh accordingly, check it still passes. Fixes analogdevicesinc#758. Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
gwendalcr
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Nov 16, 2021
enum iio_chan_type and iio_modifier are already defined in /usr/include/linux/iio/types.h on linux systems. If an application needs to include both (to support iio events for instance), compiler will complains these enums are defined twice. This patch is not without problem: - linux system must have latest kernel-headers installed: IIO_MOD_O2 modifier has been added to linux 5.9 kernel. Alter CI/travis/check_kernel.sh accordingly, check it still passes. Fixes analogdevicesinc#758. Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
pcercuei
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Nov 29, 2021
Add the missing enums from <linux/iio/types.h> and protect all of them from double-definition by wrapping them with the header's protect guards. Fixes #758. Signed-off-by: Paul Cercueil <paul@crapouillou.net>
pcercuei
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Nov 29, 2021
Add the missing enums from <linux/iio/types.h> and protect all of them from double-definition by wrapping them with the header's protect guards. Fixes #758. Signed-off-by: Paul Cercueil <paul@crapouillou.net>
pcercuei
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Dec 3, 2021
Add the missing enums from <linux/iio/types.h> and protect all of them from double-definition by wrapping them with the header's protect guards. Fixes #758. Signed-off-by: Paul Cercueil <paul@crapouillou.net>
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An issue remains with IIO_CHAN_TYPE_UNKNOWN, which is now used to support hwmon (commit e965bb1 ("Add support for hardware monitoring (hwmon) devices"): It is used in If the iio types definitions come from the kernel include file, IIO_CHAN_TYPE_UNKNOWN will not be defined. |
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Writing an application that including libiio iio.h for handling iio buffers and kernel iio include files for handling events, there are redefinition errors between
/usr/include/linux/iio/types.hand/usr/include/iio.h:When compiling on linux architecture, would it make sense for ./iio.h to include
<linux/iio/types.h>?The text was updated successfully, but these errors were encountered: