kumquat-buildroot/package/musl/musl.mk
Yann E. MORIN e31eb72040 package/musl-compat-headers: provide compatibility headers not in musl
musl provides neither sys/queue.h nor sys/cdefs.h. Those two headers are
however quite widely used in a lot of packages (though they should at
least not use cdefs.h which is only full of mostly-legacy macros, and
which is mostly an internal header of glibc and was never really meant to
be exposed to, and used by packages).

But we don't live in an ideal world, so a lot of packages break when
those two headers are missing.

We already took care of sys/queue.h with the netbsd-queue package. But
the need for cdefs.h is getting more and more pressing.

We rename the netbsd-queue package into musl-compat-headers, and we
make it install sys/queue.h (from NetBSD) and sys/cdefs.h (a minimalist
one we bundle in Buildroot). We can't use the cdefs.h from NetBSD
because it includes machine-dependent headers; instead we bundle a very
minimalistic one, that covers only what we need.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Baruch Siach <baruch@tkos.co.il>
Cc: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2016-08-19 11:29:12 +02:00

65 lines
2.0 KiB
Makefile

################################################################################
#
# musl
#
################################################################################
MUSL_VERSION = 1.1.15
MUSL_SITE = http://www.musl-libc.org/releases
MUSL_LICENSE = MIT
MUSL_LICENSE_FILES = COPYRIGHT
# Before musl is configured, we must have the first stage
# cross-compiler and the kernel headers
MUSL_DEPENDENCIES = host-gcc-initial linux-headers
# musl does not provide an implementation for sys/queue.h or sys/cdefs.h.
# So, add the musl-compat-headers package that will install those files,
# into the staging directory:
# sys/queue.h: header from NetBSD
# sys/cdefs.h: minimalist header bundled in Buildroot
MUSL_DEPENDENCIES += musl-compat-headers
# musl is part of the toolchain so disable the toolchain dependency
MUSL_ADD_TOOLCHAIN_DEPENDENCY = NO
MUSL_INSTALL_STAGING = YES
# Thumb build is broken, build in ARM mode, since all architectures
# that support Thumb1 also support ARM.
ifeq ($(BR2_ARM_INSTRUCTIONS_THUMB),y)
MUSL_EXTRA_CFLAGS += -marm
endif
define MUSL_CONFIGURE_CMDS
(cd $(@D); \
$(TARGET_CONFIGURE_OPTS) \
CFLAGS="$(filter-out -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64,$(TARGET_CFLAGS)) $(MUSL_EXTRA_CFLAGS)" \
CPPFLAGS="$(filter-out -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64,$(TARGET_CPPFLAGS))" \
./configure \
--target=$(GNU_TARGET_NAME) \
--host=$(GNU_TARGET_NAME) \
--prefix=/usr \
--libdir=/lib \
--disable-gcc-wrapper \
--enable-static \
$(if $(BR2_STATIC_LIBS),--disable-shared,--enable-shared))
endef
define MUSL_BUILD_CMDS
$(TARGET_MAKE_ENV) $(MAKE) -C $(@D)
endef
define MUSL_INSTALL_STAGING_CMDS
$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) \
DESTDIR=$(STAGING_DIR) install-libs install-tools install-headers
endef
define MUSL_INSTALL_TARGET_CMDS
$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) \
DESTDIR=$(TARGET_DIR) install-libs
$(RM) $(addprefix $(TARGET_DIR)/lib/,crt1.o crtn.o crti.o Scrt1.o)
endef
$(eval $(generic-package))