50 lines
1.7 KiB
Diff
50 lines
1.7 KiB
Diff
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Index: configure.in
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===================================================================
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--- configure.in.orig 2009-10-12 23:48:15.000000000 +0200
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+++ configure.in 2009-10-12 23:50:43.000000000 +0200
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@@ -217,6 +217,44 @@ else
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DEBUG_OBJ=debugPS.o
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fi
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+dnl ************************************************************
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+dnl Enable hiding of internal symbols in library to reduce its size and
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+dnl speed dynamic linking of applications. This currently is only supported
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+dnl on gcc >= 4.0 and SunPro C.
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+dnl
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+AC_MSG_CHECKING([whether to enable hidden symbols in the library])
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+AC_ARG_ENABLE(hidden-symbols,
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+AC_HELP_STRING([--enable-hidden-symbols],[Hide internal symbols in library])
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+AC_HELP_STRING([--disable-hidden-symbols],[Leave all symbols with default visibility in library]),
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+[ case "$enableval" in
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+ no)
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+ AC_MSG_RESULT(no)
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+ ;;
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+ *)
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+ AC_MSG_CHECKING([whether $CC supports it])
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+ if test "$GCC" = yes ; then
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+ if $CC --help --verbose 2>&1 | grep fvisibility= > /dev/null ; then
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+ AC_MSG_RESULT(yes)
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+ AC_DEFINE(PSLIB_API, [__attribute__ ((visibility ("default")))], [to make a symbol visible])
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+ CFLAGS="$CFLAGS -fvisibility=hidden"
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+ else
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+ AC_MSG_RESULT(no)
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+ fi
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+
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+ else
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+ dnl Test for SunPro cc
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+ if $CC 2>&1 | grep flags >/dev/null && $CC -flags | grep xldscope= >/dev/null ; then
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+ AC_MSG_RESULT(yes)
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+ AC_DEFINE(PSLIB_API, [__global], [to make a symbol visible])
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+ CFLAGS="$CFLAGS -xldscope=hidden"
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+ else
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+ AC_MSG_RESULT(no)
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+ fi
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+ fi
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+ ;;
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+ esac ],
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+ AC_MSG_RESULT(no)
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+)
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AC_SUBST(INT32_T)
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AC_SUBST(WITH_DEBUG)
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