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build system: make -static-libgcc selectable in config

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OpenWrt wants this off.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2020-12-16 21:53:05 +01:00
parent eb0c2e218c
commit 39646dce32
2 changed files with 10 additions and 1 deletions
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8
Config.in
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@@ -529,6 +529,14 @@ config STACK_OPTIMIZATION_386
do not work with it (they use SSE instructions without
ensuring stack alignment).
config STATIC_LIBGCC
bool "Use -static-libgcc"
default y
help
This option instructs gcc to link in a static version of its
support library, libgcc. This means that the binary will require
one fewer dynamic library at run time.
comment 'Installation Options ("make install" behavior)'
choice

3
Makefile.flags
View File

@@ -58,7 +58,8 @@ CFLAGS += $(call cc-option,-fno-builtin-strlen -fomit-frame-pointer -ffunction-s
CFLAGS += $(call cc-option,-fno-guess-branch-probability,)
CFLAGS += $(call cc-option,-funsigned-char,)
ifneq ($(CC),clang)
ifeq ($(CONFIG_STATIC_LIBGCC),y)
# Disable it, for example, if you get
# "clang-9: warning: argument unused during compilation: '-static-libgcc'"
CFLAGS += $(call cc-option,-static-libgcc,)
endif