dev-embedded/arduino-ctags: update EAPI 6 -> 8, fix build

Bug: https://bugs.gentoo.org/828550
Thanks-to: <s.zharkoff@gmail.com>
Signed-off-by: Sam James <sam@gentoo.org>

2 files changed, 257 insertions, 0 deletions

diff --git a/dev-embedded/arduino-ctags/arduino-ctags-20161123-r1.ebuild b/dev-embedded/arduino-ctags/arduino-ctags-20161123-r1.ebuild
new file mode 100644
index 000000000000..64676af3c7c1
--- /dev/null
+++ b/dev-embedded/arduino-ctags/arduino-ctags-20161123-r1.ebuild
@@ -0,0 +1,32 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+MY_COMMIT_HASH="abc8fca7499f44c725122881cd380a88c37abe0e"
+DESCRIPTION="Arduino private fork of dev-util/ctags"
+HOMEPAGE="https://github.com/arduino/ctags"
+SRC_URI="https://github.com/arduino/ctags/archive/${COMMITHASH}.tar.gz -> ${P}.tar.gz"
+S="${WORKDIR}/ctags-${MY_COMMIT_HASH}"
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-20161123-gcc-unused-attribute.patch
+)
+
+src_configure() {
+	econf \
+		--disable-readlib \
+		--disable-etags \
+		--enable-tmpdir="${EPREFIX}"/tmp
+}
+
+src_install() {
+	# This package compiles into a "ctags" executable, but don't want to clash into
+	# actually legitimate ctags implementations.
+	mv ctags arduino-ctags
+	dobin arduino-ctags
+}
diff --git a/dev-embedded/arduino-ctags/files/arduino-ctags-20161123-gcc-unused-attribute.patch b/dev-embedded/arduino-ctags/files/arduino-ctags-20161123-gcc-unused-attribute.patch
new file mode 100644
index 000000000000..e725e1193685
--- /dev/null
+++ b/dev-embedded/arduino-ctags/files/arduino-ctags-20161123-gcc-unused-attribute.patch
@@ -0,0 +1,225 @@
+https://bugs.gentoo.org/828550
+
+Thanks-to: <s.zharkoff@gmail.com>
+--- a/eiffel.c
++++ b/eiffel.c
+@@ -807,7 +807,7 @@
+ 
+ static boolean parseType (tokenInfo *const token);
+ 
+-static void parseGeneric (tokenInfo *const token, boolean declaration __unused__)
++static void parseGeneric (tokenInfo *const token, boolean declaration __arduino_unused__)
+ {
+ 	unsigned int depth = 0;
+ #ifdef TYPE_REFERENCE_TOOL
+--- a/general.h
++++ b/general.h
+@@ -57,7 +57,7 @@
+  *  to prevent warnings about unused variables.
+  */
+ #if (__GNUC__ > 2  ||  (__GNUC__ == 2  &&  __GNUC_MINOR__ >= 7)) && !defined (__GNUG__)
+-# define __unused__  __attribute__((unused))
++# define __arduino_unused__   __attribute__ ((__unused__))
+ # define __printf__(s,f)  __attribute__((format (printf, s, f)))
+ #else
+ # define __unused__
+--- a/lregex.c
++++ b/lregex.c
+@@ -538,11 +538,11 @@
+ #endif  /* HAVE_REGEX */
+ 
+ extern void addTagRegex (
+-		const langType language __unused__,
+-		const char* const regex __unused__,
+-		const char* const name __unused__,
+-		const char* const kinds __unused__,
+-		const char* const flags __unused__)
++		const langType language __arduino_unused__,
++		const char* const regex __arduino_unused__,
++		const char* const name __arduino_unused__,
++		const char* const kinds __arduino_unused__,
++		const char* const flags __arduino_unused__)
+ {
+ #ifdef HAVE_REGEX
+ 	Assert (regex != NULL);
+@@ -564,10 +564,10 @@
+ }
+ 
+ extern void addCallbackRegex (
+-		const langType language __unused__,
+-		const char* const regex __unused__,
+-		const char* const flags __unused__,
+-		const regexCallback callback __unused__)
++		const langType language __arduino_unused__,
++		const char* const regex __arduino_unused__,
++		const char* const flags __arduino_unused__,
++		const regexCallback callback __arduino_unused__)
+ {
+ #ifdef HAVE_REGEX
+ 	Assert (regex != NULL);
+@@ -581,7 +581,7 @@
+ }
+ 
+ extern void addLanguageRegex (
+-		const langType language __unused__, const char* const regex __unused__)
++		const langType language __arduino_unused__, const char* const regex __arduino_unused__)
+ {
+ #ifdef HAVE_REGEX
+ 	if (! regexBroken)
+@@ -602,7 +602,7 @@
+ */
+ 
+ extern boolean processRegexOption (const char *const option,
+-								   const char *const parameter __unused__)
++								   const char *const parameter __arduino_unused__)
+ {
+ 	boolean handled = FALSE;
+ 	const char* const dash = strchr (option, '-');
+@@ -624,7 +624,7 @@
+ 	return handled;
+ }
+ 
+-extern void disableRegexKinds (const langType language __unused__)
++extern void disableRegexKinds (const langType language __arduino_unused__)
+ {
+ #ifdef HAVE_REGEX
+ 	if (language <= SetUpper  &&  Sets [language].count > 0)
+@@ -639,8 +639,8 @@
+ }
+ 
+ extern boolean enableRegexKind (
+-		const langType language __unused__,
+-		const int kind __unused__, const boolean mode __unused__)
++		const langType language __arduino_unused__,
++		const int kind __arduino_unused__, const boolean mode __arduino_unused__)
+ {
+ 	boolean result = FALSE;
+ #ifdef HAVE_REGEX
+@@ -660,7 +660,7 @@
+ 	return result;
+ }
+ 
+-extern void printRegexKinds (const langType language __unused__, boolean indent __unused__)
++extern void printRegexKinds (const langType language __arduino_unused__, boolean indent __arduino_unused__)
+ {
+ #ifdef HAVE_REGEX
+ 	if (language <= SetUpper  &&  Sets [language].count > 0)
+--- a/lua.c
++++ b/lua.c
+@@ -37,7 +37,7 @@
+ */
+ 
+ /* for debugging purposes */
+-static void __unused__ print_string (char *p, char *q)
++static void __arduino_unused__ print_string (char *p, char *q)
+ {
+ 	for ( ; p != q; p++)
+ 		fprintf (errout, "%c", *p);
+--- a/main.c
++++ b/main.c
+@@ -522,7 +522,7 @@
+  *		Start up code
+  */
+ 
+-extern int main (int __unused__ argc, char **argv)
++extern int main (int __arduino_unused__ argc, char **argv)
+ {
+ 	cookedArgs *args;
+ #ifdef VMS
+--- a/options.c
++++ b/options.c
+@@ -731,7 +731,7 @@
+ }
+ 
+ static void processExcludeOption (
+-		const char *const option __unused__, const char *const parameter)
++		const char *const option __arduino_unused__, const char *const parameter)
+ {
+ 	const char *const fileName = parameter + 1;
+ 	if (parameter [0] == '\0')
+@@ -869,7 +869,7 @@
+ }
+ 
+ static void processFilterTerminatorOption (
+-		const char *const option __unused__, const char *const parameter)
++		const char *const option __arduino_unused__, const char *const parameter)
+ {
+ 	freeString (&Option.filterTerminator);
+ 	Option.filterTerminator = stringCopy (parameter);
+@@ -932,8 +932,8 @@
+ }
+ 
+ static void processHelpOption (
+-		const char *const option __unused__,
+-		const char *const parameter __unused__)
++		const char *const option __arduino_unused__,
++		const char *const parameter __arduino_unused__)
+ {
+ 	printProgramIdentification ();
+ 	putchar ('\n');
+@@ -1141,8 +1141,8 @@
+ }
+ 
+ static void processLicenseOption (
+-		const char *const option __unused__,
+-		const char *const parameter __unused__)
++		const char *const option __arduino_unused__,
++		const char *const parameter __arduino_unused__)
+ {
+ 	printProgramIdentification ();
+ 	puts ("");
+@@ -1168,8 +1168,8 @@
+ }
+ 
+ static void processListMapsOption (
+-		const char *const __unused__ option,
+-		const char *const __unused__ parameter)
++		const char *const __arduino_unused__ option,
++		const char *const __arduino_unused__ parameter)
+ {
+ 	if (parameter [0] == '\0' || strcasecmp (parameter, "all") == 0)
+ 	    printLanguageMaps (LANG_AUTO);
+@@ -1185,8 +1185,8 @@
+ }
+ 
+ static void processListLanguagesOption (
+-		const char *const option __unused__,
+-		const char *const parameter __unused__)
++		const char *const option __arduino_unused__,
++		const char *const parameter __arduino_unused__)
+ {
+ 	printLanguageList ();
+ 	exit (0);
+@@ -1360,8 +1360,8 @@
+ }
+ 
+ static void processVersionOption (
+-		const char *const option __unused__,
+-		const char *const parameter __unused__)
++		const char *const option __arduino_unused__,
++		const char *const parameter __arduino_unused__)
+ {
+ 	printProgramIdentification ();
+ 	exit (0);
+--- a/parse.c
++++ b/parse.c
+@@ -376,7 +376,7 @@
+ */
+ 
+ extern void processLanguageDefineOption (
+-		const char *const option, const char *const parameter __unused__)
++		const char *const option, const char *const parameter __arduino_unused__)
+ {
+ #ifdef HAVE_REGEX
+ 	if (parameter [0] == '\0')
+--- a/python.c
++++ b/python.c
+@@ -135,7 +135,7 @@
+  * extract all relevant information and create a tag.
+  */
+ static void makeFunctionTag (vString *const function,
+-	vString *const parent, int is_class_parent, const char *arglist __unused__)
++	vString *const parent, int is_class_parent, const char *arglist __arduino_unused__)
+ {
+ 	tagEntryInfo tag;
+ 	initTagEntry (&tag, vStringValue (function));