marvin.weiler
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musl-cross-make
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force cross compiler/cross compiling 

now that config.guess knows how to detect musl, it's possible when
building on a musl-based system that $build will spuriously match
$target, preventing the desired behavior of building as a cross
compiler or as a cross-compiled native compiler.

run config.guess and config.sub from the litecross makefile to check
if $build is going to match $target, and if so, append junk to the
libc/abi part of the $build tuple so that it no longer matches.
This commit is contained in:
Rich Felker 2020-02-03 01:09:08 -05:00
parent 463cd3e669
commit 97b7d13f65
1 changed files with 10 additions and 2 deletions
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12
litecross/Makefile
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@ -86,8 +86,15 @@ ifneq ($(NATIVE),)
HOST:=$(TARGET)
endif
ifeq ($(BUILD),)
GUESS = $(shell cd $(GCC_SRCDIR) && ./config.guess)
TARGET_CANON = $(shell cd $(GCC_SRCDIR) && ./config.sub $(TARGET))
BUILD = $(GUESS)$(if $(subst $(TARGET_CANON),,$(GUESS)),,xx)
endif
ifeq ($(HOST),)
SYSROOT = /$(TARGET)
FULL_BINUTILS_CONFIG += --build=$(BUILD) --host=$(BUILD)
FULL_GCC_CONFIG += --with-build-sysroot=$(CURDIR)/obj_sysroot \
AR_FOR_TARGET=$(PWD)/obj_binutils/binutils/ar \
AS_FOR_TARGET=$(PWD)/obj_binutils/gas/as-new \
@ -98,6 +105,7 @@ FULL_GCC_CONFIG += --with-build-sysroot=$(CURDIR)/obj_sysroot \
RANLIB_FOR_TARGET=$(PWD)/obj_binutils/binutils/ranlib \
READELF_FOR_TARGET=$(PWD)/obj_binutils/binutils/readelf \
STRIP_FOR_TARGET=$(PWD)/obj_binutils/binutils/strip-new \
--build=$(BUILD) --host=$(BUILD) \
# end
FULL_MUSL_CONFIG += CC="$(XGCC)" LIBCC="../obj_gcc/$(TARGET)/libgcc/libgcc.a"
MUSL_VARS = AR=../obj_binutils/binutils/ar RANLIB=../obj_binutils/binutils/ranlib
@ -108,8 +116,8 @@ obj_gcc/.lc_built: | obj_sysroot/.lc_libs obj_sysroot/.lc_headers
obj_gcc/.lc_configured: obj_binutils/.lc_built
else
SYSROOT = /
FULL_BINUTILS_CONFIG += --host=$(HOST)
FULL_GCC_CONFIG += --host=$(HOST)
FULL_BINUTILS_CONFIG += --build=$(BUILD) --host=$(HOST)
FULL_GCC_CONFIG += --build=$(BUILD) --host=$(HOST)
MUSL_VARS =
endif