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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 $$?),0)
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USE_PICOLIBC = 1
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ifeq ($(shell echo "int main(){} void _exit(int n) {(void)n;while(1);}" | LC_ALL=C $(CC) -xc - -o /dev/null -lc -specs=picolibc.specs -Wall -Wextra -pedantic 2>&1 | grep -q "use of wchar_t values across objects may fail" ; echo $$?),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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@$(Q)echo "picolibc was selected to be build but no picolibc.spec could be found"
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@$(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."
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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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