stm32/l4: Create meson build system for STM32L4 series support

include/libopencm3/stm32/l4/meson.build

@@ -0,0 +1,47 @@
+# This file is part of the libopencm3 project.
+#
+# Copyright (C) 2023 1BitSquared <info@1bitsquared.com>
+# Written by Rachel Mant <git@dragonmux.network>
+# Modified by Kat Mitchell <kat@northernpaws.io>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this
+#    list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice,
+#    this list of conditions and the following disclaimer in the documentation
+#    and/or other materials provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its
+#    contributors may be used to endorse or promote products derived from
+#    this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+stm32l4_nvic_header = custom_target(
+	'nvic.h',
+	command: [irq2nvic, '@INPUT@'],
+	input: 'irq.json',
+	# We only name one of the 3 output files due to how this all works.
+	# This script will write:
+	# - include/libopencm3/stm32/l4/nvic.h
+	# - lib/stm32/l4/vector_nvic.c
+	# - include/libopencmsis/stm32/l4/irqhandlers.h
+	output: 'nvic.h',
+	install: false,
+)
+
+stm32l4_vector_nvic = declare_dependency(
+	sources: stm32l4_nvic_header,
+)

include/meson.build

@@ -37,6 +37,7 @@ target_paths = {
 	'stm32f4': 'stm32/f4',
 	'stm32f7': 'stm32/f7',
 	'stm32h7': 'stm32/h7',
+	'stm32l4': 'stm32/l4',
 	'lm4f': 'lm3s',
 }