[OE-core] [RFC][PATCH] gcc: add flex-native explicit dependency

[Denys Dmytriyenko]

From: Denys Dmytriyenko <denys at ti.com>

It seems flex is required to build gcc:

| .../work-shared/gcc-7.2.0-r0/gcc-7.2.0/missing: line 81: flex: command not found
| WARNING: 'flex' is missing on your system.
|          You should only need it if you modified a '.l' file.
|          You may want to install the Fast Lexical Analyzer package:
|          <http://flex.sourceforge.net/>
| Makefile:2799: recipe for target 'gengtype-lex.c' failed
| make[1]: [gengtype-lex.c] Error 127 (ignored)

Normally this is handled indirectly throught binutils-cross dependency
pulling in flex-native implicitly. For deterministic builds, this should
be specified explicitly.

Signed-off-by: Denys Dmytriyenko <denys at ti.com>
---
RFC: Not sure if versioned .inc is the best place to spefice DEPENDS on flex-native

 meta/recipes-devtools/gcc/gcc-6.3.inc | 2 +-
 meta/recipes-devtools/gcc/gcc-7.2.inc | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/meta/recipes-devtools/gcc/gcc-6.3.inc b/meta/recipes-devtools/gcc/gcc-6.3.inc
index e569e02..39aca13 100644
--- a/meta/recipes-devtools/gcc/gcc-6.3.inc
+++ b/meta/recipes-devtools/gcc/gcc-6.3.inc
@@ -10,7 +10,7 @@ BINV = "6.3.0"
 
 FILESEXTRAPATHS =. "${FILE_DIRNAME}/gcc-6.3:${FILE_DIRNAME}/gcc-6.3/backport:"
 
-DEPENDS =+ "mpfr gmp libmpc zlib"
+DEPENDS =+ "mpfr gmp libmpc zlib flex-native"
 NATIVEDEPS = "mpfr-native gmp-native libmpc-native zlib-native"
 
 LICENSE = "GPL-3.0-with-GCC-exception & GPLv3"
diff --git a/meta/recipes-devtools/gcc/gcc-7.2.inc b/meta/recipes-devtools/gcc/gcc-7.2.inc
index 1d40cba..d1fb6de 100644
--- a/meta/recipes-devtools/gcc/gcc-7.2.inc
+++ b/meta/recipes-devtools/gcc/gcc-7.2.inc
@@ -10,7 +10,7 @@ BINV = "7.2.0"
 
 FILESEXTRAPATHS =. "${FILE_DIRNAME}/gcc-7.2:${FILE_DIRNAME}/gcc-7.2/backport:"
 
-DEPENDS =+ "mpfr gmp libmpc zlib"
+DEPENDS =+ "mpfr gmp libmpc zlib flex-native"
 NATIVEDEPS = "mpfr-native gmp-native libmpc-native zlib-native"
 
 LICENSE = "GPL-3.0-with-GCC-exception & GPLv3"
-- 
2.7.4