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libtool: Add -Wa,* link-mode flag for assembler pass-thru

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* build-aux/ltmain.in: add -Wa,* as link-mode flag.
Add help messages for -Wa,* and -Xassember in link mode.
Add help message for -Xcompiler in compile mode.
* doc/libtool.texi: document -Xassembler and -Wa,* for link-mode.
This commit is contained in:
aakropotkin 2021-11-18 21:24:47 -06:00
parent 86d71e869d
commit 1b74d78401
2 changed files with 12 additions and 2 deletions
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8
build-aux/ltmain.in
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@ -1751,7 +1751,8 @@ This mode accepts the following additional options:
-prefer-non-pic try to build non-PIC objects only
-shared do not build a '.o' file suitable for static linking
-static only build a '.o' file suitable for static linking
-Wc,FLAG pass FLAG directly to the compiler
-Wc,FLAG
-Xcompiler FLAG pass FLAG directly to the compiler
COMPILE-COMMAND is a command to be used in creating a 'standard' object file
from the given SOURCEFILE.
@ -1857,6 +1858,8 @@ The following components of LINK-COMMAND are treated specially:
-weak LIBNAME declare that the target provides the LIBNAME interface
-Wc,FLAG
-Xcompiler FLAG pass linker-specific FLAG directly to the compiler
-Wa,FLAG
-Xassembler FLAG pass linker-specific FLAG directly to the assembler
-Wl,FLAG
-Xlinker FLAG pass linker-specific FLAG directly to the linker
-XCClinker FLAG pass link-specific FLAG to the compiler driver (CC)
@ -5392,10 +5395,11 @@ func_mode_link ()
# -stdlib=* select c++ std lib with clang
# -fsanitize=* Clang/GCC memory and address sanitizer
# -fuse-ld=* Linker select flags for GCC
# -Wa,* Pass flags directly to the assembler
-64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \
-t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*|--sysroot=*| \
-O*|-g*|-flto*|-fwhopr*|-fuse-linker-plugin|-fstack-protector*|-stdlib=*| \
-specs=*|-fsanitize=*|-fuse-ld=*)
-specs=*|-fsanitize=*|-fuse-ld=*|-Wa,*)
func_quote_arg pretty "$arg"
arg=$func_quote_arg_result
func_append compile_command " $arg"

6
doc/libtool.texi
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@ -1616,6 +1616,12 @@ Pass a linker-specific flag directly to the compiler. With @code{-Wc,},
multiple flags may be separated by commas, whereas @code{-Xcompiler }
passes through commas unchanged.
@item -Wa,@var{flag}
@itemx -Xassembler @var{flag}
Pass a linker-specific flag directly to the assembler. With @code{-Wa,},
multiple flags may be separated by commas, whereas @code{-Xassembler }
passes through commas unchanged.
@item -Wl,@var{flag}
@itemx -Xlinker @var{flag}
Pass a linker-specific flag directly to the linker.