pci: build on Windows

Added <sys/types.h> in rte_pci header file
to include off_t type since it is missing for Windows.

Define the implementation of the Linux function rte_pci_get_sysfs_path
in pci_common.c for Linux OS only as it is unneeded for other OSs
and to avoid the warning on deprecated call to getenv() on Windows:

"warning: 'getenv' is deprecated: This function or variable may be unsafe.
Consider using _dupenv_s instead."

Signed-off-by: Tal Shnaiderman <talshn@mellanox.com>

drivers/bus/pci/pci_common.c

@@ -35,9 +35,11 @@ const char *rte_pci_get_sysfs_path(void)
 {
 	const char *path = NULL;
 
+#ifdef RTE_EXEC_ENV_LINUX
 	path = getenv("SYSFS_PCI_DEVICES");
 	if (path == NULL)
 		return SYSFS_PCI_DEVICES;
+#endif
 
 	return path;
 }

lib/librte_eal/rte_eal_exports.def

@@ -1,5 +1,6 @@
 EXPORTS
 	__rte_panic
+	per_lcore__rte_errno
 	rte_calloc
 	rte_calloc_socket
 	rte_eal_get_configuration

lib/librte_pci/rte_pci.h

@@ -20,6 +20,7 @@ extern "C" {
 #include <limits.h>
 #include <sys/queue.h>
 #include <inttypes.h>
+#include <sys/types.h>
 
 /** Formatting string for PCI device identifier: Ex: 0000:00:01.0 */
 #define PCI_PRI_FMT "%.4" PRIx16 ":%.2" PRIx8 ":%.2" PRIx8 ".%" PRIx8

lib/meson.build

@@ -36,7 +36,10 @@ libraries = [
 	'flow_classify', 'bpf', 'graph', 'node']
 
 if is_windows
-	libraries = ['kvargs','eal'] # only supported libraries for windows
+	libraries = [
+		'kvargs','eal',
+		'pci',
+	] # only supported libraries for windows
 endif
 
 default_cflags = machine_args