[PATCH] rpm: Fix error.h handing properly on musl

[PATCH] rpm: Fix error.h handing properly on musl

[Khem Raj]

Ignoring configure fragments when error.h does not exist on system
leaves eflutils half configured, which is seen when gold linker is
enabled because librpm does not have proper dependencies added,
therefore add error.h for non-glibc case and include it when glibc is
not used.

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 .../0001-Fix-build-with-musl-C-library.patch  |  26 ----
 ...tools-Add-error.h-for-non-glibc-case.patch | 118 ++++++++++++++++++
 meta/recipes-devtools/rpm/rpm_4.16.0.bb       |   1 +
 3 files changed, 119 insertions(+), 26 deletions(-)
 create mode 100644 meta/recipes-devtools/rpm/files/0001-tools-Add-error.h-for-non-glibc-case.patch

diff --git a/meta/recipes-devtools/rpm/files/0001-Fix-build-with-musl-C-library.patch b/meta/recipes-devtools/rpm/files/0001-Fix-build-with-musl-C-library.patch
index 0b1d6298a9..b960da6c31 100644
--- a/meta/recipes-devtools/rpm/files/0001-Fix-build-with-musl-C-library.patch
+++ b/meta/recipes-devtools/rpm/files/0001-Fix-build-with-musl-C-library.patch
@@ -11,29 +11,6 @@ Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
  rpmio/digest_nss.c | 1 +
  2 files changed, 3 insertions(+), 1 deletion(-)
 
-diff --git a/configure.ac b/configure.ac
-index c04a2e8d1..c9d9ac16d 100644
---- a/configure.ac
-+++ b/configure.ac
-@@ -255,6 +255,7 @@ AC_SEARCH_LIBS(dlopen, [dl])
- # Check for libelf library. Prefer external, otherwise none.
- WITH_LIBELF_LIB=
- AC_CHECK_HEADER([libelf.h])
-+AC_CHECK_HEADERS([error.h], [WITH_ERROR_H=yes])
- AC_CHECK_HEADERS([gelf.h], [
- 	AC_CHECK_LIB(elf, gelf_getvernaux, [
- 	    AC_DEFINE(HAVE_LIBELF, 1, [Define to 1 if you have the 'elf' library (-lelf).])
-@@ -263,7 +264,7 @@ AC_CHECK_HEADERS([gelf.h], [
- 	])
- ])
- AC_SUBST(WITH_LIBELF_LIB)
--AM_CONDITIONAL(LIBELF,[test "$WITH_LIBELF" = yes])
-+AM_CONDITIONAL(LIBELF,[test "$WITH_LIBELF" = yes && test "$WITH_ERROR_H" = yes])
- 
- AC_CHECK_HEADERS([dwarf.h], [
-   WITH_LIBDWARF=yes
-diff --git a/rpmio/digest_nss.c b/rpmio/digest_nss.c
-index 992d9acf6..e11920e3e 100644
 --- a/rpmio/digest_nss.c
 +++ b/rpmio/digest_nss.c
 @@ -1,5 +1,6 @@
@@ -43,6 +20,3 @@ index 992d9acf6..e11920e3e 100644
  #include <pthread.h>
  #include <nss.h>
  #include <sechash.h>
--- 
-2.14.2
-
diff --git a/meta/recipes-devtools/rpm/files/0001-tools-Add-error.h-for-non-glibc-case.patch b/meta/recipes-devtools/rpm/files/0001-tools-Add-error.h-for-non-glibc-case.patch
new file mode 100644
index 0000000000..e78514b814
--- /dev/null
+++ b/meta/recipes-devtools/rpm/files/0001-tools-Add-error.h-for-non-glibc-case.patch
@@ -0,0 +1,118 @@
+From b3952bd5e28f2a4d86c7377de239db8fa7237e14 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Sat, 31 Oct 2020 22:14:05 -0700
+Subject: [PATCH] tools: Add error.h for non-glibc case
+
+error is glibc specific API, so this patch will mostly not accepted
+upstream given that elfutils has been closely tied to glibc
+
+Upstream-Status: Inappropriate [workaround for musl]
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ tools/debugedit.c      |  6 +++++-
+ tools/elfdeps.c        |  6 +++++-
+ tools/error.h          | 27 +++++++++++++++++++++++++++
+ tools/sepdebugcrcfix.c |  6 +++++-
+ 4 files changed, 42 insertions(+), 3 deletions(-)
+ create mode 100644 tools/error.h
+
+diff --git a/tools/debugedit.c b/tools/debugedit.c
+index 9f8dcd0fb..852f46073 100644
+--- a/tools/debugedit.c
++++ b/tools/debugedit.c
+@@ -26,7 +26,6 @@
+ #include <byteswap.h>
+ #include <endian.h>
+ #include <errno.h>
+-#include <error.h>
+ #include <limits.h>
+ #include <string.h>
+ #include <stdlib.h>
+@@ -40,6 +39,11 @@
+ 
+ #include <gelf.h>
+ #include <dwarf.h>
++#ifdef __GLIBC__
++#include <error.h>
++#else
++#include "error.h"
++#endif
+ 
+ 
+ /* Unfortunately strtab manipulation functions were only officially added
+diff --git a/tools/elfdeps.c b/tools/elfdeps.c
+index 6d9094874..f69e60997 100644
+--- a/tools/elfdeps.c
++++ b/tools/elfdeps.c
+@@ -5,10 +5,14 @@
+ #include <unistd.h>
+ #include <stdlib.h>
+ #include <fcntl.h>
+-#include <error.h>
+ #include <errno.h>
+ #include <popt.h>
+ #include <gelf.h>
++#ifdef __GLIBC__
++#include <error.h>
++#else
++#include "error.h"
++#endif
+ 
+ #include <rpm/rpmstring.h>
+ #include <rpm/argv.h>
+diff --git a/tools/error.h b/tools/error.h
+new file mode 100644
+index 000000000..ef06827a0
+--- /dev/null
++++ b/tools/error.h
+@@ -0,0 +1,27 @@
++#ifndef _ERROR_H_
++#define _ERROR_H_
++
++#include <stdarg.h>
++#include <stdio.h>
++#include <stdlib.h>
++#include <string.h>
++#include <errno.h>
++
++static unsigned int error_message_count = 0;
++
++static inline void error(int status, int errnum, const char* format, ...)
++{
++	va_list ap;
++	fprintf(stderr, "%s: ", program_invocation_name);
++	va_start(ap, format);
++	vfprintf(stderr, format, ap);
++	va_end(ap);
++	if (errnum)
++		fprintf(stderr, ": %s", strerror(errnum));
++	fprintf(stderr, "\n");
++	error_message_count++;
++	if (status)
++		exit(status);
++}
++
++#endif	/* _ERROR_H_ */
+diff --git a/tools/sepdebugcrcfix.c b/tools/sepdebugcrcfix.c
+index fba460014..2be9c1fd8 100644
+--- a/tools/sepdebugcrcfix.c
++++ b/tools/sepdebugcrcfix.c
+@@ -29,9 +29,13 @@
+ #include <endian.h>
+ #include <stdio.h>
+ #include <stdlib.h>
+-#include <error.h>
+ #include <libelf.h>
+ #include <gelf.h>
++#ifdef __GLIBC__
++#include <error.h>
++#else
++#include "error.h"
++#endif
+ 
+ #ifndef _
+ #define _(x) x
+-- 
+2.29.2
+
diff --git a/meta/recipes-devtools/rpm/rpm_4.16.0.bb b/meta/recipes-devtools/rpm/rpm_4.16.0.bb
index f01874fe38..a578cf3cbd 100644
--- a/meta/recipes-devtools/rpm/rpm_4.16.0.bb
+++ b/meta/recipes-devtools/rpm/rpm_4.16.0.bb
@@ -40,6 +40,7 @@ SRC_URI = "git://github.com/rpm-software-management/rpm;branch=rpm-4.16.x \
            file://0016-rpmscript.c-change-logging-level-around-scriptlets-t.patch \
            file://0001-lib-transaction.c-fix-file-conflicts-for-MIPS64-N32.patch \
            file://0001-rpmdb.c-add-a-missing-include.patch \
+           file://0001-tools-Add-error.h-for-non-glibc-case.patch \
            "
 
 PE = "1"
-- 
2.29.2