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From: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
To: dev@dpdk.org
Cc: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>,
	Bruce Richardson <bruce.richardson@intel.com>,
	Thomas Monjalon <thomas@monjalon.net>
Subject: [dpdk-dev] [PATCH 4/6] build: MinGW-w64 support for Meson
Date: Fri, 31 Jan 2020 06:07:42 +0300	[thread overview]
Message-ID: <20200131030744.19596-5-dmitry.kozliuk@gmail.com> (raw)
In-Reply-To: <20200131030744.19596-1-dmitry.kozliuk@gmail.com>

MinGW-w64 linker does not mimic MS linker options, so the build system
must differentiate between linkers on Windows. Use GNU linker options
with GCC and MS linker options with Clang.

MinGW-w64 by default uses MSVCRT stdio, which does not comply to ANSI,
most notably its formatting and string handling functions. MinGW-w64
support for the Universal CRT (UCRT) is ongoing, but the toolchain
provides its own standard-complying implementation of stdio. The latter
is used in the patch to support formatting in DPDK.

Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>

diff --git a/config/meson.build b/config/meson.build
index 28a57f56f..a2f6f5ab1 100644
--- a/config/meson.build
+++ b/config/meson.build
@@ -14,6 +14,10 @@ foreach env:supported_exec_envs
 	set_variable('is_' + env, exec_env == env)
 endforeach
 
+# MS linker requires special treatment.
+# FIXME: use cc.get_linker_id() after upgrading to Meson >=0.53.
+is_ms_linker = is_windows and (cc.get_id() == 'clang')
+
 # set the major version, which might be used by drivers and libraries
 # depending on the configuration options
 pver = meson.project_version().split('.')
@@ -241,6 +245,16 @@ if is_freebsd
 	add_project_arguments('-D__BSD_VISIBLE', language: 'c')
 endif
 
+if is_windows
+	# Require platform SDK for Windows 7 and above.
+	add_project_arguments('-D_WIN32_WINNT=0x0601', language: 'c')
+
+	# Use MinGW-w64 stdio, because DPDK assumes ANSI-compliant formatting.
+	if cc.get_id() == 'gcc'
+		add_project_arguments('-D__USE_MINGW_ANSI_STDIO', language: 'c')
+	endif
+endif
+
 if get_option('b_lto')
 	if cc.has_argument('-ffat-lto-objects')
 		add_project_arguments('-ffat-lto-objects', language: 'c')
diff --git a/lib/librte_eal/meson.build b/lib/librte_eal/meson.build
index 4be5118ce..eae8c2ba8 100644
--- a/lib/librte_eal/meson.build
+++ b/lib/librte_eal/meson.build
@@ -20,6 +20,9 @@ endif
 if cc.has_function('getentropy', prefix : '#include <unistd.h>')
 	cflags += '-DRTE_LIBEAL_USE_GETENTROPY'
 endif
+if cc.get_id() == 'gcc'
+	cflags += '-D__USE_MINGW_ANSI_STDIO'
+endif
 sources = common_sources + env_sources
 objs = common_objs + env_objs
 headers = common_headers + env_headers
diff --git a/lib/meson.build b/lib/meson.build
index 0af3efab2..9c3cc55d5 100644
--- a/lib/meson.build
+++ b/lib/meson.build
@@ -148,12 +148,16 @@ foreach l:libraries
 				command: [map_to_def_cmd, '@INPUT@', '@OUTPUT@'],
 				input: version_map,
 				output: 'rte_@0@_exports.def'.format(name))
-			lk_deps = [version_map, def_file]
-			if is_windows
+
+			if is_ms_linker
 				lk_args = ['-Wl,/def:' + def_file.full_path(),
 					'-Wl,/implib:lib\\' + implib]
 			else
 				lk_args = ['-Wl,--version-script=' + version_map]
+			endif
+
+			lk_deps = [version_map, def_file]
+			if not is_windows
 				# on unix systems check the output of the
 				# experimental syms script, using it as a
 				# dependency of the .so build
-- 
2.25.0


  parent reply	other threads:[~2020-01-31  3:08 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-31  3:07 [dpdk-dev] [PATCH 0/6] MinGW-w64 support Dmitry Kozlyuk
2020-01-31  3:07 ` [dpdk-dev] [PATCH 1/6] eal: introduce portable format attribute Dmitry Kozlyuk
2020-01-31  3:07 ` [dpdk-dev] [PATCH 2/6] eal: use " Dmitry Kozlyuk
2020-01-31  3:07 ` [dpdk-dev] [PATCH 3/6] cmdline: " Dmitry Kozlyuk
2020-01-31  3:07 ` Dmitry Kozlyuk [this message]
2020-02-04 22:08   ` [dpdk-dev] [PATCH 4/6] build: MinGW-w64 support for Meson Thomas Monjalon
2020-02-04 23:21     ` Dmitry Kozlyuk
2020-02-05  0:41       ` Thomas Monjalon
2020-02-05 14:30         ` Bruce Richardson
2020-02-05 20:41           ` Dmitry Kozlyuk
2020-02-06 10:59             ` Bruce Richardson
2020-02-07 19:27               ` Dmitry Kozlyuk
2020-01-31  3:07 ` [dpdk-dev] [PATCH 5/6] build: add cross-file for MinGW-w64 Dmitry Kozlyuk
2020-02-04 22:14   ` Thomas Monjalon
2020-02-04 23:23     ` Dmitry Kozlyuk
2020-01-31  3:07 ` [dpdk-dev] [PATCH 6/6] doc: guide for Windows build using MinGW-w64 Dmitry Kozlyuk
2020-02-04 22:34   ` Thomas Monjalon
2020-02-04 23:57     ` Dmitry Kozlyuk
2020-02-05  2:20       ` Thomas Monjalon
2020-02-09 21:39         ` Dmitry Kozlyuk
2020-02-17  6:27           ` Dmitry Kozlyuk
2020-04-29 13:57             ` Thomas Monjalon
2020-02-05  1:49 ` [dpdk-dev] [EXTERNAL] [PATCH 0/6] MinGW-w64 support Narcisa Ana Maria Vasile
2020-02-05  5:43   ` Dmitry Kozlyuk
2020-02-05  9:26     ` David Marchand
2020-02-05 20:59       ` Dmitry Kozlyuk
2020-02-05 21:02         ` Narcisa Ana Maria Vasile
2020-02-05 21:21           ` Dmitry Kozlyuk

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