drivers: add reasons for components being disabled

For each driver where we optionally disable it, add in the reason why it's
being disabled, so the user knows how to fix it.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Luca Boccassi <bluca@debian.org>

drivers/bus/dpaa/meson.build

@@ -4,7 +4,8 @@
 version = 2
 
 if not is_linux
-        build = false
+	build = false
+	reason = 'only supported on linux'
 endif
 
 deps += ['common_dpaax', 'eventdev']

drivers/bus/fslmc/meson.build

@@ -4,7 +4,8 @@
 version = 2
 
 if not is_linux
-        build = false
+	build = false
+	reason = 'only supported on linux'
 endif
 
 deps += ['common_dpaax', 'eventdev', 'kvargs']

drivers/bus/vmbus/meson.build

@@ -17,4 +17,5 @@ if is_linux
 	includes += include_directories('linux')
 else
 	build = false
+	reason = 'only supported on linux'
 endif

drivers/common/dpaax/meson.build

@@ -4,7 +4,8 @@
 allow_experimental_apis = true
 
 if not is_linux
-        build = false
+	build = false
+	reason = 'only supported on linux'
 endif
 
 sources = files('dpaax_iova_table.c')

drivers/common/mvep/meson.build

@@ -10,6 +10,7 @@ inc_dir = path + '/include'
 lib = cc.find_library('libmusdk', dirs: [lib_dir], required: false)
 if not lib.found()
 	build = false
+	reason = 'missing dependency, "libmusdk"'
 else
 	ext_deps += lib
 	includes += include_directories(inc_dir)

drivers/common/qat/meson.build

@@ -4,6 +4,7 @@
 # This does not build a driver, but instead holds common files for
 # the crypto and compression drivers.
 build = false
+reason = '' # sentinal value to suppress printout
 qat_deps = ['bus_pci']
 qat_sources = files('qat_common.c',
 		'qat_qp.c',

drivers/compress/isal/meson.build

@@ -3,7 +3,8 @@
 
 dep = dependency('libisal', required: false)
 if not dep.found()
-       build =false
+	build = false
+	reason = 'missing dependency, "libisal"'
 endif
 
 deps += 'bus_vdev'

drivers/compress/zlib/meson.build

@@ -4,6 +4,7 @@
 dep = dependency('zlib', required: false)
 if not dep.found()
 	build = false
+	reason = 'missing dependency, "zlib"'
 endif
 
 deps += 'bus_vdev'

drivers/crypto/aesni_gcm/meson.build

@@ -5,6 +5,7 @@ IMB_required_ver = '0.52.0'
 lib = cc.find_library('IPSec_MB', required: false)
 if not lib.found()
 	build = false
+	reason = 'missing dependency, "libIPSec_MB"'
 else
 	ext_deps += lib
 
@@ -13,8 +14,8 @@ else
 		prefix : '#include<intel-ipsec-mb.h>').split('"')[1]
 
 	if (imb_ver == '') or (imb_ver.version_compare('<' + IMB_required_ver))
-		message('IPSec_MB version >= @0@ is required, found version @1@'.format(
+		reason = 'IPSec_MB version >= @0@ is required, found version @1@'.format(
-				IMB_required_ver, imb_ver))
+				IMB_required_ver, imb_ver)
 		build = false
 	endif
 endif

drivers/crypto/aesni_mb/meson.build

@@ -5,6 +5,7 @@ IMB_required_ver = '0.52.0'
 lib = cc.find_library('IPSec_MB', required: false)
 if not lib.found()
 	build = false
+	reason = 'missing dependency, "libIPSec_MB"'
 else
 	ext_deps += lib
 
@@ -13,8 +14,8 @@ else
 		prefix : '#include<intel-ipsec-mb.h>').split('"')[1]
 
 	if (imb_ver == '') or (imb_ver.version_compare('<' + IMB_required_ver))
-		message('IPSec_MB version >= @0@ is required, found version @1@'.format(
+		reason = 'IPSec_MB version >= @0@ is required, found version @1@'.format(
-				IMB_required_ver, imb_ver))
+				IMB_required_ver, imb_ver)
 		build = false
 	endif
 

drivers/crypto/caam_jr/meson.build

@@ -2,7 +2,8 @@
 # Copyright 2018 NXP
 
 if not is_linux
-        build = false
+	build = false
+	reason = 'only supported on linux'
 endif
 
 deps += ['bus_vdev', 'bus_dpaa', 'security']

drivers/crypto/ccp/meson.build

@@ -2,11 +2,13 @@
 # Copyright(c) 2018 Advanced Micro Devices, Inc. All rights reserved.
 
 if not is_linux
-        build = false
+	build = false
+	reason = 'only supported on linux'
 endif
 dep = dependency('libcrypto', required: false)
 if not dep.found()
 	build = false
+	reason = 'missing dependency, "libcrypto"'
 endif
 deps += 'bus_vdev'
 deps += 'bus_pci'

drivers/crypto/dpaa2_sec/meson.build

@@ -4,7 +4,8 @@
 version = 2
 
 if not is_linux
-        build = false
+	build = false
+	reason = 'only supported on linux'
 endif
 
 deps += ['security', 'mempool_dpaa2']

drivers/crypto/dpaa_sec/meson.build

@@ -2,7 +2,8 @@
 # Copyright 2018 NXP
 
 if not is_linux
-        build = false
+	build = false
+	reason = 'only supported on linux'
 endif
 
 deps += ['bus_dpaa', 'security']

drivers/crypto/kasumi/meson.build

@@ -4,6 +4,7 @@
 lib = cc.find_library('sso_kasumi', required: false)
 if not lib.found() or not cc.has_header('sso_kasumi.h')
 	build = false
+	reason = 'missing dependency, "libsso_kasumi"'
 	subdir_done()
 endif
 

drivers/crypto/mvsam/meson.build

@@ -10,6 +10,7 @@ inc_dir = path + '/include'
 lib = cc.find_library('libmusdk', dirs: [lib_dir], required: false)
 if not lib.found()
 	build = false
+	reason = 'missing dependency, "libmusdk"'
 else
 	ext_deps += lib
 	includes += include_directories(inc_dir)

drivers/crypto/octeontx/meson.build

@@ -2,6 +2,7 @@
 # Copyright(c) 2018 Cavium, Inc
 if not is_linux
 	build = false
+	reason = 'only supported on linux'
 endif
 
 deps += ['bus_pci']

drivers/crypto/openssl/meson.build

@@ -4,6 +4,7 @@
 dep = dependency('libcrypto', required: false)
 if not dep.found()
 	build = false
+	reason = 'missing dependency, "libcrypto"'
 endif
 allow_experimental_apis = true
 deps += 'bus_vdev'

drivers/crypto/qat/meson.build

@@ -4,6 +4,7 @@
 # this does not build the QAT driver, instead that is done in the compression
 # driver which comes later. Here we just add our sources files to the list
 build = false
+reason = '' # sentinal value to suppress printout
 dep = dependency('libcrypto', required: false)
 qat_includes += include_directories('.')
 qat_deps += 'cryptodev'

drivers/crypto/snow3g/meson.build

@@ -4,6 +4,7 @@
 lib = cc.find_library('sso_snow3g', required: false)
 if not lib.found() or not cc.has_header('sso_snow3g.h')
 	build = false
+	reason = 'missing dependency, "libsso_snow3g"'
 	subdir_done()
 endif
 

drivers/crypto/zuc/meson.build

@@ -4,6 +4,7 @@
 lib = cc.find_library('sso_zuc', required: false)
 if not lib.found() or not cc.has_header('sso_zuc.h')
 	build = false
+	reason = 'missing dependency, "libsso_zuc"'
 	subdir_done()
 endif
 

drivers/event/dpaa/meson.build

@@ -3,6 +3,7 @@
 
 if not is_linux
 	build = false
+	reason = 'only supported on linux'
 endif
 deps += ['pmd_dpaa']
 sources = files('dpaa_eventdev.c')

drivers/event/dpaa2/meson.build

@@ -5,6 +5,7 @@ version = 2
 
 if not is_linux
 	build = false
+	reason = 'only supported on linux'
 endif
 deps += ['bus_vdev', 'pmd_dpaa2', 'pmd_dpaa2_sec']
 sources = files('dpaa2_hw_dpcon.c',

drivers/mempool/dpaa/meson.build

@@ -2,7 +2,8 @@
 # Copyright 2018 NXP
 
 if not is_linux
-        build = false
+	build = false
+	reason = 'only supported on linux'
 endif
 
 deps += ['bus_dpaa']

drivers/mempool/dpaa2/meson.build

@@ -4,7 +4,8 @@
 version = 2
 
 if not is_linux
-        build = false
+	build = false
+	reason = 'only supported on linux'
 endif
 
 deps += ['bus_fslmc']

drivers/net/af_packet/meson.build

@@ -3,5 +3,6 @@
 
 if not is_linux
 	build = false
+	reason = 'only supported on linux'
 endif
 sources = files('rte_eth_af_packet.c')

drivers/net/af_xdp/meson.build

@@ -13,4 +13,5 @@ if bpf_dep.found() and cc.has_header('bpf/xsk.h') and cc.has_header('linux/if_xd
 	pkgconfig_extra_libs += '-lbpf'
 else
 	build = false
+	reason = 'missing dependency, "libbpf"'
 endif

drivers/net/avp/meson.build

@@ -2,7 +2,8 @@
 # Copyright(c) 2018 Intel Corporation
 
 if not is_linux
-        build = false
+	build = false
+	reason = 'only supported on linux'
 endif
 sources = files('avp_ethdev.c')
 install_headers('rte_avp_common.h', 'rte_avp_fifo.h')

drivers/net/axgbe/meson.build

@@ -3,6 +3,7 @@
 
 if not is_linux
 	build = false
+	reason = 'only supported on linux'
 endif
 
 sources = files('axgbe_ethdev.c',

drivers/net/bnx2x/meson.build

@@ -3,6 +3,7 @@
 
 dep = dependency('zlib', required: false)
 build = dep.found()
+reason = 'missing dependency, "zlib"'
 ext_deps += dep
 cflags += '-DZLIB_CONST'
 sources = files('bnx2x.c',

drivers/net/dpaa/meson.build

@@ -3,6 +3,7 @@
 
 if not is_linux
 	build = false
+	reason = 'only supported on linux'
 endif
 deps += ['mempool_dpaa']
 

drivers/net/dpaa2/meson.build

@@ -4,7 +4,8 @@
 version = 2
 
 if not is_linux
-        build = false
+	build = false
+	reason = 'only supported on linux'
 endif
 
 deps += ['mempool_dpaa2']

drivers/net/enetc/meson.build

@@ -3,6 +3,7 @@
 
 if not is_linux
 	build = false
+	reason = 'only supported on linux'
 endif
 
 sources = files('enetc_ethdev.c',

drivers/net/ifc/meson.build

@@ -2,6 +2,7 @@
 # Copyright(c) 2018 Intel Corporation
 
 build = dpdk_conf.has('RTE_LIBRTE_VHOST')
+reason = 'missing dependency, DPDK vhost library'
 allow_experimental_apis = true
 sources = files('ifcvf_vdpa.c', 'base/ifcvf.c')
 includes += include_directories('base')

drivers/net/kni/meson.build

@@ -3,5 +3,6 @@
 
 # this driver can be built if-and-only-if KNI library is buildable
 build = dpdk_conf.has('RTE_LIBRTE_KNI')
+reason = 'missing dependency, DPDK KNI library'
 sources = files('rte_eth_kni.c')
 deps += 'kni'

drivers/net/mlx4/meson.build

@@ -25,6 +25,7 @@ foreach libname:libnames
 		libs += [ lib ]
 	else
 		build = false
+		reason = 'missing dependency, "' + libname + '"'
 	endif
 endforeach
 # Compile PMD

drivers/net/mlx5/meson.build

@@ -25,6 +25,7 @@ foreach libname:libnames
 		libs += [ lib ]
 	else
 		build = false
+		reason = 'missing dependency, "' + libname + '"'
 	endif
 endforeach
 if build

drivers/net/mvneta/meson.build

@@ -10,6 +10,7 @@ inc_dir = path + '/include'
 lib = cc.find_library('libmusdk', dirs : [lib_dir], required: false)
 if not lib.found()
 	build = false
+	reason = 'missing dependency, "libmusdk"'
 else
 	ext_deps += lib
 	includes += include_directories(inc_dir)

drivers/net/mvpp2/meson.build

@@ -10,6 +10,7 @@ inc_dir = path + '/include'
 lib = cc.find_library('libmusdk', dirs : [lib_dir], required: false)
 if not lib.found()
 	build = false
+	reason = 'missing dependency, "libmusdk"'
 else
 	ext_deps += lib
 	includes += include_directories(inc_dir)

drivers/net/netvsc/meson.build

@@ -2,6 +2,7 @@
 # Copyright(c) 2018 Microsoft Corporation
 
 build = dpdk_conf.has('RTE_LIBRTE_VMBUS_BUS')
+reason = 'missing dependency, DPDK VMBus driver'
 version = 2
 sources = files('hn_ethdev.c', 'hn_rxtx.c', 'hn_rndis.c', 'hn_nvs.c', 'hn_vf.c')
 

drivers/net/nfb/meson.build

@@ -4,6 +4,7 @@
 # All rights reserved.
 
 dep = cc.find_library('nfb', required: false)
+reason = 'missing dependency, "libnfb"'
 
 build = dep.found() and cc.has_header('nfb/nfb.h', dependencies: dep)
 

drivers/net/nfp/meson.build

@@ -2,7 +2,8 @@
 # Copyright(c) 2018 Intel Corporation
 
 if not is_linux or not dpdk_conf.get('RTE_ARCH_64')
-        build = false
+	build = false
+	reason = 'only supported on 64-bit linux'
 endif
 sources = files('nfpcore/nfp_cpp_pcie_ops.c',
 	'nfpcore/nfp_nsp.c',

drivers/net/pcap/meson.build

@@ -14,6 +14,7 @@ else
 		pkgconfig_extra_libs += '-lpcap'
 	else
 		build = false
+		reason = 'missing dependency, "libpcap"'
 	endif
 endif
 sources = files('rte_eth_pcap.c')

drivers/net/sfc/meson.build

@@ -8,6 +8,7 @@
 
 if arch_subdir != 'x86' or not dpdk_conf.get('RTE_ARCH_64')
 	build = false
+	reason = 'only supported on x86_64'
 endif
 
 allow_experimental_apis = true

drivers/net/softnic/meson.build

@@ -2,7 +2,8 @@
 # Copyright(c) 2018 Intel Corporation
 
 if not is_linux
-        build = false
+	build = false
+	reason = 'only supported on linux'
 endif
 allow_experimental_apis = true
 install_headers('rte_eth_softnic.h')

drivers/net/szedata2/meson.build

@@ -3,5 +3,6 @@
 
 dep = cc.find_library('sze2', required: false)
 build = dep.found()
+reason = 'missing dependency, "libsze2"'
 ext_deps += dep
 sources = files('rte_eth_szedata2.c')

drivers/net/tap/meson.build

@@ -2,7 +2,8 @@
 # Copyright 2018 Luca Boccassi <bluca@debian.org>
 
 if not is_linux
-        build = false
+	build = false
+	reason = 'only supported on linux'
 endif
 sources = files(
 	'rte_eth_tap.c',

drivers/net/vdev_netvsc/meson.build

@@ -2,7 +2,8 @@
 # Copyright(c) 2018 Luca Boccassi <bluca@debian.org>
 
 if not is_linux
-        build = false
+	build = false
+	reason = 'only supported on linux'
 endif
 sources = files('vdev_netvsc.c')
 

drivers/net/vhost/meson.build

@@ -2,6 +2,7 @@
 # Copyright(c) 2018 Intel Corporation
 
 build = dpdk_conf.has('RTE_LIBRTE_VHOST')
+reason = 'missing dependency, DPDK vhost library'
 version = 2
 sources = files('rte_eth_vhost.c')
 install_headers('rte_eth_vhost.h')

drivers/raw/dpaa2_cmdif/meson.build

@@ -4,6 +4,7 @@
 version = 2
 
 build = dpdk_conf.has('RTE_LIBRTE_DPAA2_MEMPOOL')
+reason = 'missing dependency, DPDK DPAA2 mempool driver'
 deps += ['rawdev', 'mempool_dpaa2', 'bus_vdev']
 sources = files('dpaa2_cmdif.c')
 

drivers/raw/dpaa2_qdma/meson.build

@@ -4,6 +4,7 @@
 version = 2
 
 build = dpdk_conf.has('RTE_LIBRTE_DPAA2_MEMPOOL')
+reason = 'missing dependency, DPDK DPAA2 mempool driver'
 deps += ['rawdev', 'mempool_dpaa2', 'ring', 'kvargs']
 sources = files('dpaa2_qdma.c')
 

drivers/raw/ifpga_rawdev/meson.build

@@ -9,6 +9,7 @@ objs = [base_objs]
 dep = dependency('libfdt', required: false)
 if not dep.found()
 	build = false
+	reason = 'missing dependency, "libfdt"'
 endif
 deps += ['rawdev', 'pci', 'bus_pci', 'kvargs',
 	'bus_vdev', 'bus_ifpga', 'net']