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0077e9ad70
The test for the requirement of disabling wchar_t size warnings assumed that $(CC) is used for linking, instead of $(LINK). With GCC $(LINK) and $(CC) happen to be (in most cases) identical, but with LLVM they are not. This results in issues with compiling with LLVM.
33 lines
1.2 KiB
Makefile
33 lines
1.2 KiB
Makefile
ifneq (,$(filter picolibc,$(USEMODULE)))
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# Test if picolibc.specs is available
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ifeq ($(shell $(LINK) -specs=picolibc.specs -E - 2>/dev/null >/dev/null </dev/null ; echo $$?),0)
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USE_PICOLIBC = 1
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ifeq ($(shell echo "int main(){} void _exit(int n) {(void)n;while(1);}" | LC_ALL=C $(LINK) -xc - -o /dev/null -lc -specs=picolibc.specs -Wall -Wextra -pedantic 2>&1 | grep -q "use of wchar_t values across objects may fail" ; echo $$?),0)
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CFLAGS += -fshort-wchar
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LINKFLAGS += -Wl,--no-wchar-size-warning
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endif
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else
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BUILDDEPS += _missing-picolibc
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endif
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endif
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.PHONY: _missing-picolibc
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_missing-picolibc:
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@$(Q)echo "picolibc was selected to be build but no picolibc.specs could be found"
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@$(Q)echo "you might want to install "picolibc" for "$(TARGET_ARCH)""
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@$(Q)echo "or add "FEATURES_BLACKLIST += picolibc" to Makefile)"
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@$(COLOR_ECHO) "$(COLOR_RED)check your installation or build configuration.$(COLOR_RESET)"
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@$(Q)exit 1
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ifeq (1,$(USE_PICOLIBC))
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LINKFLAGS += -specs=picolibc.specs
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CFLAGS += -specs=picolibc.specs
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ifeq (,$(filter printf_float scanf_float,$(USEMODULE)))
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CFLAGS += -DPICOLIBC_INTEGER_PRINTF_SCANF
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LINKFLAGS += -DPICOLIBC_INTEGER_PRINTF_SCANF
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endif
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endif
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LINKFLAGS += -lc
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