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newlib.mk: llvm, fix newlib-nano header not used

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In the previous state, with llvm and arm for example, newlib-nano include dir
NEWLIB_NANO_INCLUDE_DIR is placed after NEWLIB_INCLUDES and so the default
'newlib.h' is used instead of the nano version.
This commit is contained in:
Gaëtan Harter 2018-07-03 12:17:46 +02:00
parent 0a53b6142b
commit f8e1419a31
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GPG Key ID: 76DF6BCF1B1F883B
1 changed files with 7 additions and 7 deletions
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14
makefiles/libc/newlib.mk
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@ -69,6 +69,13 @@ ifeq ($(TOOLCHAIN),llvm)
# in case some header is missing from the cross tool chain
NEWLIB_INCLUDES := -isystem $(NEWLIB_INCLUDE_DIR) -nostdinc
NEWLIB_INCLUDES += $(addprefix -isystem ,$(abspath $(wildcard $(dir $(NEWLIB_INCLUDE_DIR))/usr/include)))
# Newlib includes should go before GCC includes. This is especially important
# when using Clang, because Clang will yield compilation errors on some GCC-
# bundled headers. Clang compatible versions of those headers are already
# provided by Newlib, so placing this directory first will eliminate those problems.
# The above problem was observed with LLVM 3.9.1 when building against GCC 6.3.0 headers.
INCLUDES := $(NEWLIB_INCLUDES) $(INCLUDES)
endif
ifeq (1,$(USE_NEWLIB_NANO))
@ -79,10 +86,3 @@ ifeq (1,$(USE_NEWLIB_NANO))
# the regular system include dirs.
INCLUDES := -isystem $(NEWLIB_NANO_INCLUDE_DIR) $(INCLUDES)
endif
# Newlib includes should go before GCC includes. This is especially important
# when using Clang, because Clang will yield compilation errors on some GCC-
# bundled headers. Clang compatible versions of those headers are already
# provided by Newlib, so placing this directory first will eliminate those problems.
# The above problem was observed with LLVM 3.9.1 when building against GCC 6.3.0 headers.
export INCLUDES := $(NEWLIB_INCLUDES) $(INCLUDES)