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build: use -Wl,--gc-sections when appropriate #6497

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Dec 10, 2024
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build: use -Wl,--gc-sections when appropriate #6497

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14 changes: 14 additions & 0 deletions configure.ac
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Original file line number Diff line number Diff line change
Expand Up @@ -166,6 +166,20 @@ AC_PATH_PROGS(SSH, [rsh ssh], [/usr/bin/rsh])
AC_DEFINE_UNQUOTED([PATH_SSH], "$SSH",
[Define remote shell program to be used by the ssh:// connector])

# macos linker doesn't support --gc-sections
saved_LDFLAGS="$LDFLAGS"
LDFLAGS="-Wl,--gc-sections $LDFLAGS"
AC_MSG_CHECKING([whether ld supports --gc-sections])
AC_LINK_IFELSE([AC_LANG_PROGRAM([])], [
AC_MSG_RESULT([yes])
ld_gc_sections="-Wl,--gc-sections"
AS_VAR_SET(ld_gc_sections, $ld_gc_sections)
AC_SUBST(ld_gc_sections)
],[
AC_MSG_RESULT([no])
])
LDFLAGS=$saved_LDFLAGS

LT_INIT
AC_PROG_AWK

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