configure: fix for missing include files on Linux

By merging [1] and [2], the drivers 'xlnx-pcie-xvc' and 'linuxspidev'
are now build by default on Linux.
This highlights the dependency of some include files under subfolder
'linux' that are not installed by default in all Linux boxes.

Add the check in 'configure' for the presence of the include file
and conditionally enable the build of the driver.

Change-Id: Ie88645c3455ab07622f069a0cc7bf09d1a5a2c75
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Link: [1] 7214c8be46f7 ("configure: show adapter Xilinx XVC/PCIe in the configuration summary")
Link: [2] 83e0293f7ba3 ("Add Linux SPI device SWD adapter support")
Reviewed-on: https://review.openocd.org/c/openocd/+/8935
Tested-by: jenkins

diff --git a/configure.ac b/configure.ac
index e48653b2150f52dd117f4e40292e11ff6deb4b20..c44d902d2cb7fa92f22be8ee406a79047672457d 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -63,6 +63,8 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <features.h>]], [[int v = __GLIBC_
 AC_MSG_RESULT($have_glibc)
 
 AC_CHECK_HEADERS([fcntl.h])
+AC_CHECK_HEADERS([linux/pci.h])
+AC_CHECK_HEADERS([linux/spi/spidev.h])
 AC_CHECK_HEADERS([malloc.h])
 AC_CHECK_HEADERS([netdb.h])
 AC_CHECK_HEADERS([poll.h])
@@ -694,10 +696,11 @@ PROCESS_ADAPTERS([LIBGPIOD_ADAPTERS], ["x$use_libgpiod" = "xyes"], [Linux libgpi
 PROCESS_ADAPTERS([SYSFSGPIO_ADAPTER], ["x$is_linux" = "xyes"], [Linux sysfs])
 PROCESS_ADAPTERS([REMOTE_BITBANG_ADAPTER], [true], [unused])
 PROCESS_ADAPTERS([LIBJAYLINK_ADAPTERS], ["x$use_internal_libjaylink" = "xyes" -o "x$use_libjaylink" = "xyes"], [libjaylink-0.2])
-PROCESS_ADAPTERS([PCIE_ADAPTERS], ["x$is_linux" = "xyes"], [Linux build])
+PROCESS_ADAPTERS([PCIE_ADAPTERS], ["x$is_linux" = "xyes" -a "x$ac_cv_header_linux_pci_h" = "xyes"], [Linux build])
 PROCESS_ADAPTERS([SERIAL_PORT_ADAPTERS], ["x$can_build_buspirate" = "xyes"],
                                          [internal error: validation should happen beforehand])
-PROCESS_ADAPTERS([LINUXSPIDEV_ADAPTER], ["x$is_linux" = "xyes"], [Linux spidev])
+PROCESS_ADAPTERS([LINUXSPIDEV_ADAPTER], ["x$is_linux" = "xyes" -a "x$ac_cv_header_linux_spi_spidev_h" = "xyes"],
+                                        [Linux spidev])
 PROCESS_ADAPTERS([VDEBUG_ADAPTER], [true], [unused])
 PROCESS_ADAPTERS([JTAG_DPI_ADAPTER], [true], [unused])
 PROCESS_ADAPTERS([JTAG_VPI_ADAPTER], [true], [unused])