[Mod] First commit

package/re2/Config.in

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+config BR2_PACKAGE_RE2
+	bool "re2"
+	depends on BR2_INSTALL_LIBSTDCPP
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 # needs C++11
+	depends on BR2_TOOLCHAIN_HAS_THREADS
+	help
+	  RE2 is a fast, safe, thread-friendly alternative
+	  to backtracking regular expression engines like
+	  those used in PCRE, Perl, and Python.
+	  It is a C++ library.
+
+	  https://github.com/google/re2
+
+comment "re2 needs a toolchain w/ C++, threads, gcc >= 4.8"
+	depends on !BR2_INSTALL_LIBSTDCPP || \
+		!BR2_TOOLCHAIN_HAS_THREADS || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_8

package/re2/re2.hash

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+# locally calculated
+sha256  f89c61410a072e5cbcf8c27e3a778da7d6fd2f2b5b1445cd4f4508bee946ab0f  re2-2022-06-01.tar.gz
+sha256  6040cda75d90b1738292a631d89934c411ef7ffd543c4d6a1b7edfc8edf29449  LICENSE

package/re2/re2.mk

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+################################################################################
+#
+# re2
+#
+################################################################################
+
+RE2_VERSION = 2022-06-01
+RE2_SITE = $(call github,google,re2,$(RE2_VERSION))
+RE2_LICENSE = BSD-3-Clause
+RE2_LICENSE_FILES = LICENSE
+RE2_INSTALL_STAGING = YES
+
+RE2_MAKE_OPTS = \
+	$(TARGET_CONFIGURE_OPTS) \
+	CXXFLAGS="$(TARGET_CXXFLAGS) -std=c++11"
+
+define RE2_BUILD_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) $(RE2_MAKE_OPTS) \
+		-C $(@D) $(if $(BR2_STATIC_LIBS),static)
+endef
+
+define RE2_INSTALL_STAGING_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) $(RE2_MAKE_OPTS) \
+		DESTDIR="$(STAGING_DIR)" prefix=/usr -C $(@D) \
+		$(if $(BR2_STATIC_LIBS),static-install,install)
+endef
+
+define RE2_INSTALL_TARGET_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) $(RE2_MAKE_OPTS) \
+		DESTDIR="$(TARGET_DIR)" prefix=/usr -C $(@D) \
+		$(if $(BR2_STATIC_LIBS),static-install,install)
+endef
+
+define HOST_RE2_BUILD_CMDS
+	$(HOST_MAKE_ENV) $(MAKE) $(HOST_CONFIGURE_OPTS) \
+		-C $(@D)
+endef
+
+define HOST_RE2_INSTALL_CMDS
+	$(HOST_MAKE_ENV) $(MAKE) $(HOST_CONFIGURE_OPTS) \
+		-C $(@D) DESTDIR="$(HOST_DIR)" prefix=/usr install
+endef
+
+$(eval $(generic-package))
+$(eval $(host-generic-package))