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| author |   Mike Frysinger <vapier@gentoo.org> | 2017-03-03 12:26:24 -0800 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2018-06-07 00:41:30 -0400 |
| commit | 3361e7f62bccabc396b4e298cbb2ddebedb8855f (patch) | |
| tree | 5f1a3d8c948f9fa3762f71e46c7eb392f17cce74 /Makefile | |
| parent | paxelf: constify elf_findsecbyname (diff) | |
| download | pax-utils-3361e7f62bccabc396b4e298cbb2ddebedb8855f.tar.gz pax-utils-3361e7f62bccabc396b4e298cbb2ddebedb8855f.tar.bz2 pax-utils-3361e7f62bccabc396b4e298cbb2ddebedb8855f.zip | |
build: support clang a bit better
Use the -Werror=unknown-warning-option option if available so clang
will reject some of the extra -W flags we add ourselves.
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 10 |
1 files changed, 6 insertions, 4 deletions
@@ -2,13 +2,15 @@ # Distributed under the terms of the GNU General Public License v2 #################################################################### -check_gcc = $(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \ +check_compiler = \ + $(shell if $(CC) $(WUNKNOWN) $(1) -S -o /dev/null -xc /dev/null >/dev/null 2>&1; \ then echo "$(1)"; else echo "$(2)"; fi) -check_gcc_many = $(foreach flag,$(1),$(call check_gcc,$(flag))) +check_compiler_many = $(foreach flag,$(1),$(call check_compiler,$(flag))) #################################################################### # Avoid CC overhead when installing ifneq ($(MAKECMDGOALS),install) +WUNKNOWN := $(call check_compiler,-Werror=unknown-warning-option) _WFLAGS := \ -Wdeclaration-after-statement \ -Wextra \ @@ -19,7 +21,7 @@ WFLAGS := -Wall -Wunused -Wimplicit -Wshadow -Wformat=2 \ -Wmissing-declarations -Wmissing-prototypes -Wwrite-strings \ -Wbad-function-cast -Wnested-externs -Wcomment -Winline \ -Wchar-subscripts -Wcast-align -Wno-format-nonliteral \ - $(call check_gcc_many,$(_WFLAGS)) + $(call check_compiler_many,$(_WFLAGS)) endif CFLAGS ?= -O2 -pipe @@ -86,7 +88,7 @@ DEBUG_FLAGS = \ -fsanitize=leak \ -fsanitize=undefined debug: clean - $(MAKE) CFLAGS="$(CFLAGS) -g3 -ggdb $(call check_gcc_many,$(DEBUG_FLAGS))" all + $(MAKE) CFLAGS="$(CFLAGS) -g3 -ggdb $(call check_compiler_many,$(DEBUG_FLAGS))" all @-chpax -permsx $(ELF_TARGETS) @-paxctl -permsx $(ELF_TARGETS) |