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| author |  Julien Olivain <ju.o@free.fr> | 2020-11-12 13:01:54 +0100 |
|---|---|---|
| committer |  Peter Korsgaard <peter@korsgaard.com> | 2020-11-15 16:07:48 +0100 |
| commit | 5110efaa330f029880a238ccefacfb11ea36947e (patch) | |
| tree | 576a077645197901f344f5f87ad0d1ef0b27746c | |
| parent | 1eceb1ec8afa25c3d719bad47510988e501287aa (diff) | |
| download | buildroot-5110efaa330f029880a238ccefacfb11ea36947e.tar.gz buildroot-5110efaa330f029880a238ccefacfb11ea36947e.tar.bz2 | |
package/linux-backports: use flex and bison to generate kconfig parser
Upstream backports package does not define the LEX/YACC Makefile
variables, contrary to the Kernel which is defining those in [1]. The
default "lex" and "yacc" are then used. On some systems, "yacc" is
Berkeley Yacc. Kconfig parser files are using non-Posix Bison
constructs.
Attempting to generate the parser with byacc fails with error:
yacc: e - line 97 of "zconf.y", syntax error
%destructor {
^
This patch defines the LEX and YACC Makefile variable to use flex and
bison, to fix this issue. The host-bison and host-flex dependencies are
added only if the host does not have them, following the same logic of
the Kernel.
[1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=73a4f6dbe70a1b93c11e2d1d6ca68f3522daf434
Signed-off-by: Julien Olivain <ju.o@free.fr>
Reviewed-by: Petr Vorel <petr.vorel@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit ec493ea4899f7be6500f495a32b4150feff355ef)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
| -rw-r--r-- | package/linux-backports/linux-backports.mk | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/package/linux-backports/linux-backports.mk b/package/linux-backports/linux-backports.mk index 1d7d6e7f00..030d7a2864 100644 --- a/package/linux-backports/linux-backports.mk +++ b/package/linux-backports/linux-backports.mk @@ -11,6 +11,14 @@ LINUX_BACKPORTS_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/projects/backports/stab LINUX_BACKPORTS_LICENSE = GPL-2.0 LINUX_BACKPORTS_LICENSE_FILES = COPYING +# flex and bison are needed to generate kconfig parser. We use the +# same logic as the linux kernel (we add host dependencies only if +# host does not have them). See linux/linux.mk and +# support/dependencies/check-host-bison-flex.mk. +LINUX_BACKPORTS_DEPENDENCIES = \ + $(BR2_BISON_HOST_DEPENDENCY) \ + $(BR2_FLEX_HOST_DEPENDENCY) + ifeq ($(BR2_PACKAGE_LINUX_BACKPORTS_USE_DEFCONFIG),y) LINUX_BACKPORTS_KCONFIG_FILE = $(LINUX_BACKPORTS_DIR)/defconfigs/$(call qstrip,$(BR2_PACKAGE_LINUX_BACKPORTS_DEFCONFIG)) else ifeq ($(BR2_PACKAGE_LINUX_BACKPORTS_USE_CUSTOM_CONFIG),y) @@ -33,6 +41,8 @@ LINUX_BACKPORTS_KCONFIG_OPTS = $(LINUX_BACKPORTS_MAKE_OPTS) # LINUX_BACKPORTS_MODULE_MAKE_OPTS is used by the kernel-module infra. # LINUX_BACKPORTS_MAKE_OPTS = \ + LEX=flex \ + YACC=bison \ BACKPORT_DIR=$(@D) \ KLIB_BUILD=$(LINUX_DIR) \ KLIB=$(TARGET_DIR)/lib/modules/$(LINUX_VERSION_PROBED) \ |