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Implemented --enable-hidden-symbols configure option to enable

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-fvisibility=hidden on gcc >= 4.0.  This reduces the size of the libcurl
binary and speeds up dynamic linking by hiding all the internal symbols from
the symbol table.
This commit is contained in:
Dan Fandrich
2006-06-12 20:33:04 +00:00
parent 6246bbc656
commit 59582a9d9d
3 changed files with 56 additions and 5 deletions
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23
configure.ac
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@@ -1954,6 +1954,29 @@ AC_HELP_STRING([--disable-cookies],[Disable cookies support]),
AC_MSG_RESULT(yes)
)
dnl ************************************************************
dnl Enable hiding of internal symbols in library to reduce its size and
dnl speed dynamic linking of applications. This currently is only supported
dnl on gcc >= 4.0
dnl
AC_MSG_CHECKING([whether to enable hidden symbols in the library])
AC_ARG_ENABLE(hidden-symbols,
AC_HELP_STRING([--enable-hidden-symbols],[Hide internal symbols in library (gcc>=4)])
AC_HELP_STRING([--disable-hidden-symbols],[Leave all symbols with default visibility in library]),
[ case "$enableval" in
no)
AC_MSG_RESULT(no)
;;
*) AC_MSG_RESULT(yes)
AC_DEFINE(CURL_HIDDEN_SYMBOLS, 1, [to enable hidden symbols])
AC_SUBST(CURL_HIDDEN_SYMBOLS)
CFLAGS="$CFLAGS -fvisibility=hidden"
;;
esac ],
AC_MSG_RESULT(no)
)
dnl ************************************************************
if test "x$ws2" = "xyes"; then
dnl If ws2_32 is wanted, make sure it is the _last_ lib in LIBS (makes