flex: update to 2.6.4

Add a backport patch that addresses segfaults on newer glibc versions.

Remove:
CVE-2016-6354.patch (backport)
0002-avoid-c-comments-in-c-code-fails-with-gcc-6.patch (issue fixed upstream)
do_not_create_pdf_doc.patch (issue fixed upstream)

ptest pass rate is 100%.

(From OE-Core rev: a0fe05f3ffd67dc42e053c20bd019bb9d463d0ad)

Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

6 files changed, 38 insertions, 148 deletions

diff --git a/meta/recipes-devtools/flex/flex/0001-build-AC_USE_SYSTEM_EXTENSIONS-in-configure.ac.patch b/meta/recipes-devtools/flex/flex/0001-build-AC_USE_SYSTEM_EXTENSIONS-in-configure.ac.patch
new file mode 100644
index 0000000000..60bf7ce8cf
--- /dev/null
+++ b/meta/recipes-devtools/flex/flex/0001-build-AC_USE_SYSTEM_EXTENSIONS-in-configure.ac.patch
@@ -0,0 +1,32 @@
+From ed1f7e9de0d6a1d5a9e581e02a63593d22cf1e52 Mon Sep 17 00:00:00 2001
+From: Explorer09 <explorer09@gmail.com>
+Date: Mon, 4 Sep 2017 10:47:33 +0800
+Subject: [PATCH] build: AC_USE_SYSTEM_EXTENSIONS in configure.ac.
+
+This would, e.g. define _GNU_SOURCE in config.h, enabling the
+reallocarray() prototype in glibc 2.26+ on Linux systems with that
+version of glibc.
+
+Fixes #241.
+
+Upstream-Status: Backport
+Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
+---
+ configure.ac | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/configure.ac b/configure.ac
+index 55e774b..c879fe1 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -25,8 +25,10 @@
+ # autoconf requirements and initialization
+ 
+ AC_INIT([the fast lexical analyser generator],[2.6.4],[flex-help@lists.sourceforge.net],[flex])
++AC_PREREQ([2.60])
+ AC_CONFIG_SRCDIR([src/scan.l])
+ AC_CONFIG_AUX_DIR([build-aux])
++AC_USE_SYSTEM_EXTENSIONS
+ LT_INIT
+ AM_INIT_AUTOMAKE([1.11.3 -Wno-portability foreign check-news std-options dist-lzip parallel-tests subdir-objects])
+ AC_CONFIG_HEADER([src/config.h])
diff --git a/meta/recipes-devtools/flex/flex/0002-avoid-c-comments-in-c-code-fails-with-gcc-6.patch b/meta/recipes-devtools/flex/flex/0002-avoid-c-comments-in-c-code-fails-with-gcc-6.patch
deleted file mode 100644
index 438ca5f527..0000000000
--- a/meta/recipes-devtools/flex/flex/0002-avoid-c-comments-in-c-code-fails-with-gcc-6.patch
+++ /dev/null
@@ -1,64 +0,0 @@
-From 7072befe1397af4eb01c3ff7edf99f0cd5076089 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Andreas=20M=C3=BCller?= <schnitzeltony@googlemail.com>
-Date: Tue, 30 Aug 2016 14:25:32 +0200
-Subject: [PATCH] avoid c++ comments in c-code - fails with gcc-6
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-fixes:
-
-| error: C++ style comments are not allowed in ISO C90
-| num_to_alloc = 1; // After all that talk, this was set to 1 anyways...
-
-Upstream-Status: Pending
-
-Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
----
- src/flex.skl | 2 +-
- src/scan.c   | 2 +-
- src/skel.c   | 2 +-
- 3 files changed, 3 insertions(+), 3 deletions(-)
-
-diff --git a/src/flex.skl b/src/flex.skl
-index 73a0b9e..ed71627 100644
---- a/src/flex.skl
-+++ b/src/flex.skl
-@@ -2350,7 +2350,7 @@ void yyFlexLexer::yyensure_buffer_stack(void)
-                 * scanner will even need a stack. We use 2 instead of 1 to avoid an
-                 * immediate realloc on the next call.
-          */
--               num_to_alloc = 1; // After all that talk, this was set to 1 anyways...
-+               num_to_alloc = 1; /* After all that talk, this was set to 1 anyways... */
-                YY_G(yy_buffer_stack) = (struct yy_buffer_state**)yyalloc
-                                                                (num_to_alloc * sizeof(struct yy_buffer_state*)
-                                                                M4_YY_CALL_LAST_ARG);
-diff --git a/src/scan.c b/src/scan.c
-index b55df2d..f1dce75 100644
---- a/src/scan.c
-+++ b/src/scan.c
-@@ -4672,7 +4672,7 @@ static void yyensure_buffer_stack (void)
-                 * scanner will even need a stack. We use 2 instead of 1 to avoid an
-                 * immediate realloc on the next call.
-          */
--               num_to_alloc = 1; // After all that talk, this was set to 1 anyways...
-+               num_to_alloc = 1; /* After all that talk, this was set to 1 anyways...*/
-                (yy_buffer_stack) = (struct yy_buffer_state**)yyalloc
-                                                                (num_to_alloc * sizeof(struct yy_buffer_state*)
-                                                                );
-diff --git a/src/skel.c b/src/skel.c
-index ef657d3..26cc889 100644
---- a/src/skel.c
-+++ b/src/skel.c
-@@ -2561,7 +2561,7 @@ const char *skel[] = {
-   "             * scanner will even need a stack. We use 2 instead of 1 to avoid an",
-   "             * immediate realloc on the next call.",
-   "         */",
--  "            num_to_alloc = 1; // After all that talk, this was set to 1 anyways...",
-+  "            num_to_alloc = 1; /* After all that talk, this was set to 1 anyways... */",
-   "            YY_G(yy_buffer_stack) = (struct yy_buffer_state**)yyalloc",
-   "                                                            (num_to_alloc * sizeof(struct yy_buffer_state*)",
-   "                                                            M4_YY_CALL_LAST_ARG);",
--- 
-2.5.5
-
diff --git a/meta/recipes-devtools/flex/flex/CVE-2016-6354.patch b/meta/recipes-devtools/flex/flex/CVE-2016-6354.patch
deleted file mode 100644
index 216ac7ae1c..0000000000
--- a/meta/recipes-devtools/flex/flex/CVE-2016-6354.patch
+++ /dev/null
@@ -1,59 +0,0 @@
-From 3939eccdff598f47e5b37b05d58bf1b44d3796e7 Mon Sep 17 00:00:00 2001
-From: Jussi Kukkonen <jussi.kukkonen@intel.com>
-Date: Fri, 7 Oct 2016 14:15:38 +0300
-Subject: [PATCH] Prevent buffer overflow in yy_get_next_buffer
-
-This is upstream commit a5cbe929ac3255d371e698f62dc256afe7006466
-with some additional backporting to make binutils build again.
-
-Upstream-Status: Backport
-CVE: CVE-2016-6354
-Signed-off-by: Jussi Kukkonen <jussi.kukkonen@intel.com>
----
- src/flex.skl | 2 +-
- src/scan.c   | 2 +-
- src/skel.c   | 2 +-
- 3 files changed, 3 insertions(+), 3 deletions(-)
-
-diff --git a/src/flex.skl b/src/flex.skl
-index ed71627..814d562 100644
---- a/src/flex.skl
-+++ b/src/flex.skl
-@@ -1718,7 +1718,7 @@ int yyFlexLexer::yy_get_next_buffer()
- 
-        else
-                {
--                       yy_size_t num_to_read =
-+                       int num_to_read =
-                        YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1;
- 
-                while ( num_to_read <= 0 )
-diff --git a/src/scan.c b/src/scan.c
-index f1dce75..1949872 100644
---- a/src/scan.c
-+++ b/src/scan.c
-@@ -4181,7 +4181,7 @@ static int yy_get_next_buffer (void)
- 
-        else
-                {
--                       yy_size_t num_to_read =
-+                       int num_to_read =
-                        YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1;
- 
-                while ( num_to_read <= 0 )
-diff --git a/src/skel.c b/src/skel.c
-index 26cc889..0344d18 100644
---- a/src/skel.c
-+++ b/src/skel.c
-@@ -1929,7 +1929,7 @@ const char *skel[] = {
-   "",
-   "    else",
-   "            {",
--  "                    yy_size_t num_to_read =",
-+  "                    int num_to_read =",
-   "                    YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1;",
-   "",
-   "            while ( num_to_read <= 0 )",
--- 
-2.1.4
-
diff --git a/meta/recipes-devtools/flex/flex/do_not_create_pdf_doc.patch b/meta/recipes-devtools/flex/flex/do_not_create_pdf_doc.patch
deleted file mode 100644
index 29792efee8..0000000000
--- a/meta/recipes-devtools/flex/flex/do_not_create_pdf_doc.patch
+++ /dev/null
@@ -1,17 +0,0 @@
-Upstream-Status: Inappropriate (embedded specific)
-
-Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>
-
-Index: flex-2.6.0/doc/Makefile.am
-===================================================================
---- flex-2.6.0.orig/doc/Makefile.am
-+++ flex-2.6.0/doc/Makefile.am
-@@ -2,7 +2,7 @@ help2man = @HELP2MAN@
- 
- info_TEXINFOS =        flex.texi
- dist_man_MANS = flex.1
--dist_doc_DATA= flex.pdf
-+EXTRA_DIST= flex.pdf
- 
- CLEANFILES = \
-        flex.aux \
diff --git a/meta/recipes-devtools/flex/flex/run-ptest b/meta/recipes-devtools/flex/flex/run-ptest
index 19db337900..037301c40f 100755
--- a/meta/recipes-devtools/flex/flex/run-ptest
+++ b/meta/recipes-devtools/flex/flex/run-ptest
@@ -2,4 +2,4 @@
 
 # make would want to rebuild some files with a compiler otherwise :-/
 make FLEX=/usr/bin/flex -t check-TESTS || true
-make FLEX=/usr/bin/flex check-TESTS
+make FLEX=/usr/bin/flex abs_builddir=./ check-TESTS
diff --git a/meta/recipes-devtools/flex/flex_2.6.0.bb b/meta/recipes-devtools/flex/flex_2.6.4.bb
index 9bdd99c59f..d8e2f7f28c 100644
--- a/meta/recipes-devtools/flex/flex_2.6.0.bb
+++ b/meta/recipes-devtools/flex/flex_2.6.4.bb
@@ -10,17 +10,15 @@ BBCLASSEXTEND = "native nativesdk"
 
 LIC_FILES_CHKSUM = "file://COPYING;md5=e4742cf92e89040b39486a6219b68067"
 
-SRC_URI = "${SOURCEFORGE_MIRROR}/flex/flex-${PV}.tar.bz2 \
+SRC_URI = "https://github.com/westes/flex/releases/download/v${PV}/flex-${PV}.tar.gz \
            file://run-ptest \
-           file://do_not_create_pdf_doc.patch \
            file://0001-tests-add-a-target-for-building-tests-without-runnin.patch \
-           file://0002-avoid-c-comments-in-c-code-fails-with-gcc-6.patch \
-           file://CVE-2016-6354.patch \
            ${@bb.utils.contains('PTEST_ENABLED', '1', '', 'file://disable-tests.patch', d)} \
+           file://0001-build-AC_USE_SYSTEM_EXTENSIONS-in-configure.ac.patch \
            "
 
-SRC_URI[md5sum] = "266270f13c48ed043d95648075084d59"
-SRC_URI[sha256sum] = "24e611ef5a4703a191012f80c1027dc9d12555183ce0ecd46f3636e587e9b8e9"
+SRC_URI[md5sum] = "2882e3179748cc9f9c23ec593d6adc8d"
+SRC_URI[sha256sum] = "e87aae032bf07c26f85ac0ed3250998c37621d95f8bd748b31f15b33c45ee995"
 
 # Flex has moved to github from 2.6.1 onwards
 UPSTREAM_CHECK_URI = "https://github.com/westes/flex/releases"
@@ -30,7 +28,7 @@ inherit autotools gettext texinfo ptest
 
 M4 = "${bindir}/m4"
 M4_class-native = "${STAGING_BINDIR_NATIVE}/m4"
-EXTRA_OECONF += "ac_cv_path_M4=${M4}"
+EXTRA_OECONF += "ac_cv_path_M4=${M4} ac_cv_func_reallocarray=no"
 EXTRA_OEMAKE += "m4=${STAGING_BINDIR_NATIVE}/m4"
 
 EXTRA_OEMAKE += "${@bb.utils.contains('PTEST_ENABLED', '1', 'FLEX=${STAGING_BINDIR_NATIVE}/flex', '', d)}"