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makefiles/libc: fix wchar_t size warnings on LLVM

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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 $(CC) happen to be (in most cases) identical, but with LLVM they
are not. This results in issues with compiling with LLVM.
This commit is contained in:
Marian Buschsieweke 2022-11-04 13:07:01 +01:00
parent 67ba1a0cb7
commit 0077e9ad70
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GPG Key ID: CB8E3238CE715A94
2 changed files with 2 additions and 2 deletions
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2
makefiles/libc/newlib.mk
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@ -2,7 +2,7 @@ ifneq (,$(filter newlib_nano,$(USEMODULE)))
# Test if nano.specs is available
ifeq ($(shell $(LINK) -specs=nano.specs -E - 2>/dev/null >/dev/null </dev/null ; echo $$?),0)
USE_NEWLIB_NANO = 1
ifeq ($(shell echo "int main(){} void _exit(int n) {(void)n;while(1);}" | LC_ALL=C $(CC) -xc - -o /dev/null -lc -specs=nano.specs -Wall -Wextra -pedantic 2>&1 | grep -q "use of wchar_t values across objects may fail" ; echo $$?),0)
ifeq ($(shell echo "int main(){} void _exit(int n) {(void)n;while(1);}" | LC_ALL=C $(LINK) -xc - -o /dev/null -lc -specs=nano.specs -Wall -Wextra -pedantic 2>&1 | grep -q "use of wchar_t values across objects may fail" ; echo $$?),0)
CFLAGS += -fshort-wchar
LINKFLAGS += -Wl,--no-wchar-size-warning
endif

2
makefiles/libc/picolibc.mk
View File

@ -2,7 +2,7 @@ ifneq (,$(filter picolibc,$(USEMODULE)))
# Test if picolibc.specs is available
ifeq ($(shell $(LINK) -specs=picolibc.specs -E - 2>/dev/null >/dev/null </dev/null ; echo $$?),0)
USE_PICOLIBC = 1
ifeq ($(shell echo "int main(){} void _exit(int n) {(void)n;while(1);}" | LC_ALL=C $(CC) -xc - -o /dev/null -lc -specs=picolibc.specs -Wall -Wextra -pedantic 2>&1 | grep -q "use of wchar_t values across objects may fail" ; echo $$?),0)
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)
CFLAGS += -fshort-wchar
LINKFLAGS += -Wl,--no-wchar-size-warning
endif