Work

6 files changed, 246 insertions, 337 deletions

diff --git a/repo/efivar/efivar.xibuild b/repo/efivar/efivar.xibuild
index b2830d1..d47e14f 100644
--- a/repo/efivar/efivar.xibuild
+++ b/repo/efivar/efivar.xibuild
@@ -1,35 +1,29 @@
 #!/bin/sh
 
-MAKEDEPS="make patch"
-DEPS="musl"
+NAME="efivar"
+DESC="Tools and library to manipulate EFI variables"
+
+MAKEDEPS="popt linux-headers mandoc"
 
 PKG_VER=38
-SOURCE=https://github.com/rhboot/efivar/releases/download/$PKG_VER/efivar-$PKG_VER.tar.bz2
+SOURCE="https://github.com/rhboot/efivar/releases/download/$PKG_VER/efivar-$PKG_VER.tar.bz2"
 
 ADDITIONAL="
-    patches/musl-bswap.patch
-    patches/efivar-fix-format_guid.patch
-    patches/efivar-fix-packed.patch
-    patches/efivar-fix-ucs2.patch
+musl-compat.patch
 "
 
-DESC="Tools and libraries to manupulate EFI variables"
-
 prepare() {
-    apply_patches
-
-    # remove verbosity in ln commands
-    for f in Makefile src/Makefile src/test/Makefile docs/Makefile Make.rules; do 
-        echo "patching $f"
-        sed -i "s@-vfs@-fs@g" $f
-        sed -i "s@-rfv@-rf@g" $f
-    done
+	apply_patches
+	sed -i 's/#include <sys\/cdefs.h>//g' "$BUILD_ROOT/src/compiler.h"
 }
 
-build () {
-    make CFLAGS="-O2 -Wno-stringop-truncation"
+build() {
+	cd "$BUILD_ROOT"
+	libdir="/usr/lib" make
 }
 
-package () {
-    make LIBDIR=/usr/lib DESTDIR=$PKG_DEST install 
+package() {
+	cd "$BUILD_ROOT"
+	libdir="/usr/lib" make DESTDIR="$PKG_DEST" install
 }
+
diff --git a/repo/efivar/musl-compat.patch b/repo/efivar/musl-compat.patch
new file mode 100644
index 0000000..00229be
--- /dev/null
+++ b/repo/efivar/musl-compat.patch
@@ -0,0 +1,231 @@
+From cece3ffd5be2f8641eb694513f2b73e5eb97ffd3 Mon Sep 17 00:00:00 2001
+From: Natanael Copa <ncopa@alpinelinux.org>
+Date: Fri, 28 Jan 2022 12:13:30 +0100
+Subject: [PATCH 1/2] efisecdb: fix build with musl libc
+
+Refactor code to use POSIX atexit(3) instead of the GNU specific
+on_exit(3).
+
+Resolves: #197
+Resolves: #202
+Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
+---
+ src/compiler.h |  2 --
+ src/efisecdb.c | 68 +++++++++++++++++++-------------------------------
+ 2 files changed, 26 insertions(+), 44 deletions(-)
+
+diff --git a/src/compiler.h b/src/compiler.h
+index e2f18f0b..d95fb014 100644
+--- a/src/compiler.h
++++ b/src/compiler.h
+@@ -7,8 +7,6 @@
+ #ifndef COMPILER_H_
+ #define COMPILER_H_
+ 
+-#include <sys/cdefs.h>
+-
+ /* GCC version checking borrowed from glibc. */
+ #if defined(__GNUC__) && defined(__GNUC_MINOR__)
+ #  define GNUC_PREREQ(maj,min) \
+diff --git a/src/efisecdb.c b/src/efisecdb.c
+index f8823737..6bd5ad90 100644
+--- a/src/efisecdb.c
++++ b/src/efisecdb.c
+@@ -25,6 +25,10 @@
+ extern char *optarg;
+ extern int optind, opterr, optopt;
+ 
++static efi_secdb_t *secdb = NULL;
++static list_t infiles;
++static list_t actions;
++
+ struct hash_param {
+ 	char *name;
+ 	efi_secdb_type_t algorithm;
+@@ -187,12 +191,11 @@ add_action(list_t *list, action_type_t action_type, const efi_guid_t *owner,
+ }
+ 
+ static void
+-free_actions(int status UNUSED, void *actionsp)
++free_actions(void)
+ {
+-	list_t *actions = (list_t *)actionsp;
+ 	list_t *pos, *tmp;
+ 
+-	for_each_action_safe(pos, tmp, actions) {
++	for_each_action_safe(pos, tmp, &actions) {
+ 		action_t *action = list_entry(pos, action_t, list);
+ 
+ 		list_del(&action->list);
+@@ -202,12 +205,11 @@ free_actions(int status UNUSED, void *actionsp)
+ }
+ 
+ static void
+-free_infiles(int status UNUSED, void *infilesp)
++free_infiles(void)
+ {
+-	list_t *infiles = (list_t *)infilesp;
+ 	list_t *pos, *tmp;
+ 
+-	for_each_ptr_safe(pos, tmp, infiles) {
++	for_each_ptr_safe(pos, tmp, &infiles) {
+ 		ptrlist_t *entry = list_entry(pos, ptrlist_t, list);
+ 
+ 		list_del(&entry->list);
+@@ -216,27 +218,12 @@ free_infiles(int status UNUSED, void *infilesp)
+ }
+ 
+ static void
+-maybe_free_secdb(int status UNUSED, void *voidp)
++maybe_free_secdb(void)
+ {
+-	efi_secdb_t **secdbp = (efi_secdb_t **)voidp;
+-
+-	if (secdbp == NULL || *secdbp == NULL)
++	if (secdb == NULL)
+ 		return;
+ 
+-	efi_secdb_free(*secdbp);
+-}
+-
+-static void
+-maybe_do_unlink(int status, void *filep)
+-{
+-	char **file = (char **)filep;
+-
+-	if (status == 0)
+-		return;
+-	if (file == NULL || *file == NULL)
+-		return;
+-
+-	unlink(*file);
++	efi_secdb_free(secdb);
+ }
+ 
+ static void
+@@ -323,15 +310,6 @@ parse_input_files(list_t *infiles, char **outfile, efi_secdb_t **secdb,
+ 	return status;
+ }
+ 
+-/*
+- * These need to be static globals so that they're not on main's stack when
+- * on_exit() fires.
+- */
+-static efi_secdb_t *secdb = NULL;
+-static list_t infiles;
+-static list_t actions;
+-static char *outfile = NULL;
+-
+ int
+ main(int argc, char *argv[])
+ {
+@@ -351,6 +329,7 @@ main(int argc, char *argv[])
+ 	bool do_sort_data = false;
+ 	bool sort_descending = false;
+ 	int status = 0;
++	char *outfile = NULL;
+ 
+ 	const char sopts[] = ":aAc:dfg:h:i:Lo:rs:t:v?";
+ 	const struct option lopts[] = {
+@@ -376,10 +355,9 @@ main(int argc, char *argv[])
+ 	INIT_LIST_HEAD(&infiles);
+ 	INIT_LIST_HEAD(&actions);
+ 
+-	on_exit(free_actions, &actions);
+-	on_exit(free_infiles, &infiles);
+-	on_exit(maybe_free_secdb, &secdb);
+-	on_exit(maybe_do_unlink, &outfile);
++	atexit(free_actions);
++	atexit(free_infiles);
++	atexit(maybe_free_secdb);
+ 
+ 	/*
+ 	 * parse the command line.
+@@ -587,24 +565,30 @@ main(int argc, char *argv[])
+ 	outfd = open(outfile, flags, 0600);
+ 	if (outfd < 0) {
+ 		char *tmpoutfile = outfile;
+-		if (errno == EEXIST)
+-			outfile = NULL;
++		if (errno != EEXIST)
++			unlink(outfile);
+ 		err(1, "could not open \"%s\"", tmpoutfile);
+ 	}
+ 
+ 	rc = ftruncate(outfd, 0);
+-	if (rc < 0)
++	if (rc < 0) {
++		unlink(outfile);
+ 		err(1, "could not truncate output file \"%s\"", outfile);
++	}
+ 
+ 	void *output;
+ 	size_t size = 0;
+ 	rc = efi_secdb_realize(secdb, &output, &size);
+-	if (rc < 0)
++	if (rc < 0) {
++		unlink(outfile);
+ 		secdb_err(1, "could not realize signature list");
++	}
+ 
+ 	rc = write(outfd, output, size);
+-	if (rc < 0)
++	if (rc < 0) {
++		unlink(outfile);
+ 		err(1, "could not write signature list");
++	}
+ 
+ 	close(outfd);
+ 	xfree(output);
+
+From df09b472419466987f2f30176dd00937e640aa9a Mon Sep 17 00:00:00 2001
+From: Natanael Copa <ncopa@alpinelinux.org>
+Date: Fri, 28 Jan 2022 12:29:00 +0100
+Subject: [PATCH 2/2] efisecdb: do not free optarg
+
+The *outfile passed to parse_input_files can only be either set to
+optarg or be NULL. optarg should not be free'd and NULL does not need
+to.
+
+Since we no longer use on_exit to unlink outfile we also don't need to
+set *outfile to NULL.
+
+Fixes commit d91787035bc1 (efisecdb: add efisecdb)
+
+Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
+---
+ src/efisecdb.c | 7 ++-----
+ 1 file changed, 2 insertions(+), 5 deletions(-)
+
+diff --git a/src/efisecdb.c b/src/efisecdb.c
+index 6bd5ad90..70fa1847 100644
+--- a/src/efisecdb.c
++++ b/src/efisecdb.c
+@@ -255,8 +255,7 @@ list_guids(void)
+  * failure.
+  */
+ static int
+-parse_input_files(list_t *infiles, char **outfile, efi_secdb_t **secdb,
+-		  bool dump)
++parse_input_files(list_t *infiles, efi_secdb_t **secdb, bool dump)
+ {
+ 	int status = 0;
+ 	list_t *pos, *tmp;
+@@ -297,8 +296,6 @@ parse_input_files(list_t *infiles, char **outfile, efi_secdb_t **secdb,
+ 				if (!dump)
+ 					exit(1);
+ 				status = 1;
+-				xfree(*outfile);
+-				*outfile = NULL;
+ 				break;
+ 			}
+ 		}
+@@ -528,7 +525,7 @@ main(int argc, char *argv[])
+ 	efi_secdb_set_bool(secdb, EFI_SECDB_SORT_DATA, do_sort_data);
+ 	efi_secdb_set_bool(secdb, EFI_SECDB_SORT_DESCENDING, sort_descending);
+ 
+-	status = parse_input_files(&infiles, &outfile, &secdb, dump);
++	status = parse_input_files(&infiles, &secdb, dump);
+ 	if (status == 0) {
+ 		for_each_action_safe(pos, tmp, &actions) {
+ 			action_t *action = list_entry(pos, action_t, list);
diff --git a/repo/efivar/patches/efivar-fix-format_guid.patch b/repo/efivar/patches/efivar-fix-format_guid.patch
deleted file mode 100644
index f40942f..0000000
--- a/repo/efivar/patches/efivar-fix-format_guid.patch
+++ /dev/null
@@ -1,56 +0,0 @@
-From b98ba8921010d03f46704a476c69861515deb1ca Mon Sep 17 00:00:00 2001
-From: Peter Jones <pjones@redhat.com>
-Date: Mon, 7 Jan 2019 10:30:59 -0500
-Subject: [PATCH] dp.h: make format_guid() handle misaligned guid pointers
- safely.
-
-GCC 9 adds -Werror=address-of-packed-member, which causes us to see the
-build error reported at
- https://bugzilla.opensuse.org/show_bug.cgi?id=1120862 .
-
-That bug report shows us the following:
-
-In file included from dp.c:26:
-dp.h: In function 'format_vendor_helper':
-dp.h:120:37: error: taking address of packed member of 'struct <anonymous>' may result in an unaligned pointer value [-Werror=address-of-packed-member]
-  120 |  format_guid(buf, size, off, label, &dp->hw_vendor.vendor_guid);
-      |                                     ^~~~~~~~~~~~~~~~~~~~~~~~~~
-dp.h:74:25: note: in definition of macro 'format_guid'
-   74 |   _rc = efi_guid_to_str(guid, &_guidstr);   \
-      |                         ^~~~
-cc1: all warnings being treated as errors
-
-This patch makes format_guid() use a local variable as a bounce buffer
-in the case that the guid we're passed is aligned as chaotic neutral.
-
-Note that this only fixes this instance and there may be others that bz
-didn't show because it exited too soon, and I don't have a gcc 9 build
-in front of me right now.
-
-Signed-off-by: Peter Jones <pjones@redhat.com>
----
- src/dp.h | 11 +++++++++--
- 1 file changed, 9 insertions(+), 2 deletions(-)
-
-diff --git a/src/dp.h b/src/dp.h
-index aa4e390..20cb608 100644
---- a/src/dp.h
-+++ b/src/dp.h
-@@ -70,8 +70,15 @@
- #define format_guid(buf, size, off, dp_type, guid) ({			\
- 		int _rc;						\
- 		char *_guidstr = NULL;					\
--									\
--		_rc = efi_guid_to_str(guid, &_guidstr);			\
-+		efi_guid_t _guid;					\
-+		const efi_guid_t * const _guid_p =			\
-+			likely(__alignof__(guid) == sizeof(guid))	\
-+				? guid					\
-+				: &_guid;				\
-+								        \
-+		if (unlikely(__alignof__(guid) == sizeof(guid)))	\
-+			memmove(&_guid, guid, sizeof(_guid));		\
-+		_rc = efi_guid_to_str(_guid_p, &_guidstr);		\
- 		if (_rc < 0) {						\
- 			efi_error("could not build %s GUID DP string",	\
- 				  dp_type);				\
diff --git a/repo/efivar/patches/efivar-fix-packed.patch b/repo/efivar/patches/efivar-fix-packed.patch
deleted file mode 100644
index bbb6a99..0000000
--- a/repo/efivar/patches/efivar-fix-packed.patch
+++ /dev/null
@@ -1,168 +0,0 @@
-From c3c553db85ff10890209d0fe48fb4856ad68e4e0 Mon Sep 17 00:00:00 2001
-From: Peter Jones <pjones@redhat.com>
-Date: Thu, 21 Feb 2019 15:20:12 -0500
-Subject: [PATCH] Fix all the places -Werror=address-of-packed-member catches.
-
-This gets rid of all the places GCC 9's -Werror=address-of-packed-member
-flags as problematic.
-
-Fixes github issue #123
-
-Signed-off-by: Peter Jones <pjones@redhat.com>
----
- src/dp-message.c            |  6 ++++--
- src/dp.h                    | 12 ++++--------
- src/guid.c                  |  2 +-
- src/include/efivar/efivar.h |  2 +-
- src/ucs2.h                  | 27 +++++++++++++++++++--------
- 5 files changed, 29 insertions(+), 20 deletions(-)
-
-diff --git a/src/dp-message.c b/src/dp-message.c
-index 3724e5f..9f96466 100644
---- a/src/dp-message.c
-+++ b/src/dp-message.c
-@@ -620,11 +620,13 @@ _format_message_dn(char *buf, size_t size, const_efidp dp)
- 			  ) / sizeof(efi_ip_addr_t);
- 		format(buf, size, off, "Dns", "Dns(");
- 		for (int i=0; i < end; i++) {
--			const efi_ip_addr_t *addr = &dp->dns.addrs[i];
-+			efi_ip_addr_t addr;
-+
-+			memcpy(&addr, &dp->dns.addrs[i], sizeof(addr));
- 			if (i != 0)
- 				format(buf, size, off, "Dns", ",");
- 			format_ip_addr(buf, size, off, "Dns",
--				       dp->dns.is_ipv6, addr);
-+				       dp->dns.is_ipv6, &addr);
- 		}
- 		format(buf, size, off, "Dns", ")");
- 		break;
-diff --git a/src/dp.h b/src/dp.h
-index 20cb608..1f921d5 100644
---- a/src/dp.h
-+++ b/src/dp.h
-@@ -71,13 +71,9 @@
- 		int _rc;						\
- 		char *_guidstr = NULL;					\
- 		efi_guid_t _guid;					\
--		const efi_guid_t * const _guid_p =			\
--			likely(__alignof__(guid) == sizeof(guid))	\
--				? guid					\
--				: &_guid;				\
--								        \
--		if (unlikely(__alignof__(guid) == sizeof(guid)))	\
--			memmove(&_guid, guid, sizeof(_guid));		\
-+		const efi_guid_t * const _guid_p = &_guid;		\
-+									\
-+		memmove(&_guid, guid, sizeof(_guid));			\
- 		_rc = efi_guid_to_str(_guid_p, &_guidstr);		\
- 		if (_rc < 0) {						\
- 			efi_error("could not build %s GUID DP string",	\
-@@ -86,7 +82,7 @@
- 			_guidstr = onstack(_guidstr,			\
- 					   strlen(_guidstr)+1);		\
- 			_rc = format(buf, size, off, dp_type, "%s",	\
--				     _guidstr);	\
-+				     _guidstr);				\
- 		}							\
- 		_rc;							\
- 	})
-diff --git a/src/guid.c b/src/guid.c
-index 306c9ff..3156b3b 100644
---- a/src/guid.c
-+++ b/src/guid.c
-@@ -31,7 +31,7 @@
- extern const efi_guid_t efi_guid_zero;
- 
- int NONNULL(1, 2) PUBLIC
--efi_guid_cmp(const efi_guid_t *a, const efi_guid_t *b)
-+efi_guid_cmp(const void * const a, const void * const b)
- {
- 	return memcmp(a, b, sizeof (efi_guid_t));
- }
-diff --git a/src/include/efivar/efivar.h b/src/include/efivar/efivar.h
-index 316891c..ad6449d 100644
---- a/src/include/efivar/efivar.h
-+++ b/src/include/efivar/efivar.h
-@@ -128,7 +128,7 @@ extern int efi_symbol_to_guid(const char *symbol, efi_guid_t *guid)
- 
- extern int efi_guid_is_zero(const efi_guid_t *guid);
- extern int efi_guid_is_empty(const efi_guid_t *guid);
--extern int efi_guid_cmp(const efi_guid_t *a, const efi_guid_t *b);
-+extern int efi_guid_cmp(const void * const a, const void * const b);
- 
- /* import / export functions */
- typedef struct efi_variable efi_variable_t;
-diff --git a/src/ucs2.h b/src/ucs2.h
-index dbb5900..edd8367 100644
---- a/src/ucs2.h
-+++ b/src/ucs2.h
-@@ -23,16 +23,21 @@
- 	(((val) & ((mask) << (shift))) >> (shift))
- 
- static inline size_t UNUSED
--ucs2len(const uint16_t * const s, ssize_t limit)
-+ucs2len(const void *vs, ssize_t limit)
- {
- 	ssize_t i;
--	for (i = 0; i < (limit >= 0 ? limit : i+1) && s[i] != (uint16_t)0; i++)
-+	const uint16_t *s = vs;
-+	const uint8_t *s8 = vs;
-+
-+	for (i = 0;
-+	     i < (limit >= 0 ? limit : i+1) && s8[0] != 0 && s8[1] != 0;
-+	     i++, s8 += 2, s++)
- 		;
- 	return i;
- }
- 
- static inline size_t UNUSED
--ucs2size(const uint16_t * const s, ssize_t limit)
-+ucs2size(const void *s, ssize_t limit)
- {
- 	size_t rc = ucs2len(s, limit);
- 	rc *= sizeof (uint16_t);
-@@ -69,10 +74,11 @@ utf8size(uint8_t *s, ssize_t limit)
- }
- 
- static inline unsigned char * UNUSED
--ucs2_to_utf8(const uint16_t * const chars, ssize_t limit)
-+ucs2_to_utf8(const void * const voidchars, ssize_t limit)
- {
- 	ssize_t i, j;
- 	unsigned char *ret;
-+	const uint16_t * const chars = voidchars;
- 
- 	if (limit < 0)
- 		limit = ucs2len(chars, -1);
-@@ -124,10 +130,12 @@ ucs2_to_utf8(const uint16_t * const chars, ssize_t limit)
- }
- 
- static inline ssize_t UNUSED NONNULL(4)
--utf8_to_ucs2(uint16_t *ucs2, ssize_t size, int terminate, uint8_t *utf8)
-+utf8_to_ucs2(void *ucs2void, ssize_t size, int terminate, uint8_t *utf8)
- {
- 	ssize_t req;
- 	ssize_t i, j;
-+	uint16_t *ucs2 = ucs2void;
-+	uint16_t val16;
- 
- 	if (!ucs2 && size > 0) {
- 		errno = EINVAL;
-@@ -162,10 +170,13 @@ utf8_to_ucs2(uint16_t *ucs2, ssize_t size, int terminate, uint8_t *utf8)
- 			val = utf8[i] & 0x7f;
- 			i += 1;
- 		}
--		ucs2[j] = val;
-+		val16 = val;
-+		ucs2[j] = val16;
-+	}
-+	if (terminate) {
-+		val16 = 0;
-+		ucs2[j++] = val16;
- 	}
--	if (terminate)
--		ucs2[j++] = (uint16_t)0;
- 	return j;
- };
- 
diff --git a/repo/efivar/patches/efivar-fix-ucs2.patch b/repo/efivar/patches/efivar-fix-ucs2.patch
deleted file mode 100644
index 594da61..0000000
--- a/repo/efivar/patches/efivar-fix-ucs2.patch
+++ /dev/null
@@ -1,59 +0,0 @@
-From fdb803402fb32fa6d020bac57a40c7efe4aabb7d Mon Sep 17 00:00:00 2001
-From: Javier Martinez Canillas <javierm@redhat.com>
-Date: Tue, 5 Mar 2019 17:23:24 +0100
-Subject: [PATCH] ucs2.h: remove unused variable
-
-The const uint16_t pointer is not used since now the two bytes of the
-UCS-2 chars are checked to know if is the termination of the string.
-
-Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
----
- src/ucs2.h | 3 +--
- 1 file changed, 1 insertion(+), 2 deletions(-)
-
-diff --git a/src/ucs2.h b/src/ucs2.h
-index edd8367..e0390c3 100644
---- a/src/ucs2.h
-+++ b/src/ucs2.h
-@@ -26,12 +26,11 @@ static inline size_t UNUSED
- ucs2len(const void *vs, ssize_t limit)
- {
- 	ssize_t i;
--	const uint16_t *s = vs;
- 	const uint8_t *s8 = vs;
- 
- 	for (i = 0;
- 	     i < (limit >= 0 ? limit : i+1) && s8[0] != 0 && s8[1] != 0;
--	     i++, s8 += 2, s++)
-+	     i++, s8 += 2)
- 		;
- 	return i;
- }
-From 4e04afc2df9bbc26e5ab524b53a6f4f1e61d7c9e Mon Sep 17 00:00:00 2001
-From: Javier Martinez Canillas <javierm@redhat.com>
-Date: Tue, 5 Mar 2019 17:23:32 +0100
-Subject: [PATCH] ucs2.h: fix logic that checks for UCS-2 string termination
-
-Currently the loop to count the lenght of the UCS-2 string ends if either
-of the two bytes are 0, but 0 is a valid value for UCS-2 character codes.
-
-So only break the loop when 0 is the value for both UCS-2 char bytes.
-
-Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
----
- src/ucs2.h | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/src/ucs2.h b/src/ucs2.h
-index e0390c3..fd8b056 100644
---- a/src/ucs2.h
-+++ b/src/ucs2.h
-@@ -29,7 +29,7 @@ ucs2len(const void *vs, ssize_t limit)
- 	const uint8_t *s8 = vs;
- 
- 	for (i = 0;
--	     i < (limit >= 0 ? limit : i+1) && s8[0] != 0 && s8[1] != 0;
-+	     i < (limit >= 0 ? limit : i+1) && !(s8[0] == 0 && s8[1] == 0);
- 	     i++, s8 += 2)
- 		;
- 	return i;
diff --git a/repo/efivar/patches/musl-bswap.patch b/repo/efivar/patches/musl-bswap.patch
deleted file mode 100644
index 8b86d9a..0000000
--- a/repo/efivar/patches/musl-bswap.patch
+++ /dev/null
@@ -1,33 +0,0 @@
-From c9b54ee2cd504542cac4ed95fa7842bd14b39f9c Mon Sep 17 00:00:00 2001
-From: "A. Wilcox" <AWilcox@Wilcox-Tech.com>
-Date: Fri, 18 Aug 2017 20:36:03 -0500
-Subject: [PATCH] makeguids: Ensure compatibility with other libcs
-
-The musl libc does not provide __bswap_constant_XX.
-If <endian.h> does not provide these macros, use our own.
-
-This fixes issue #84.
----
- src/makeguids.c | 9 +++++++++
- 1 file changed, 9 insertions(+)
-
-diff --git a/src/makeguids.c b/src/makeguids.c
-index ec75a86..6b0d80e 100644
---- a/src/makeguids.c
-+++ b/src/makeguids.c
-@@ -152,6 +152,15 @@ main(int argc, char *argv[])
- 	fprintf(symout, "#include <efivar/efivar.h>\n");
- 	fprintf(symout, "#include <endian.h>\n");
- 	fprintf(symout, """\n\
-+#ifndef __bswap_constant_16\n\
-+#define __bswap_constant_16(x)\\\n\
-+	((unsigned short int) ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8)))\n\
-+#endif\n\
-+#ifndef __bswap_constant_32\n\
-+#define __bswap_constant_32(x)\\\n\
-+	((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >>  8) | \\\n\
-+	 (((x) & 0x0000ff00) <<  8) | (((x) & 0x000000ff) << 24))\n\
-+#endif\n\
- #if BYTE_ORDER == BIG_ENDIAN\n\
- #define cpu_to_be32(n) (n)\n\
- #define cpu_to_be16(n) (n)\n\