~mdw / dpkg / blame
| Commit | Line | Data |
|---|---|---|
| 1479465f GJ |
1 | # Copyright © 2004 Scott James Remnant <scott@netsplit.com>. |
| 2 | # Copyright © 2010, 2014, 2016 Guillem Jover <guillem@debian.org> | |
| 3 | ||
| 4 | # DPKG_LINKER_OPTIMIZATIONS | |
| 5 | # ------------------------- | |
| 6 | # Add configure option to disable linker optimizations. | |
| 7 | AC_DEFUN([DPKG_LINKER_OPTIMIZATIONS], [ | |
| 8 | AC_ARG_ENABLE([linker-optimizations], | |
| 9 | [AS_HELP_STRING([--disable-linker-optimizations], | |
| 10 | [Disable (detected) linker optimizations])], | |
| 11 | [], [enable_linker_optimizations=yes]) | |
| 12 | ||
| 13 | AS_IF([test "x$enable_linker_optimizations" = "xno"], [ | |
| 14 | LDFLAGS=$(echo "$LDFLAGS" | sed -e "s/ -Wl,-O[[0-9]]*\b//g") | |
| 15 | ], [ | |
| 16 | save_LDFLAGS=$LDFLAGS | |
| 17 | LDFLAGS="$LDFLAGS -Wl,-O1" | |
| 18 | AC_LINK_IFELSE([ | |
| 19 | AC_LANG_PROGRAM([[]], [[]]) | |
| 20 | ], [], [ | |
| 21 | LDFLAGS="$save_LDFLAGS" | |
| 22 | ]) | |
| 23 | ]) | |
| 24 | ]) | |
| 25 | ||
| 26 | # DPKG_LINKER_AS_NEEDED | |
| 27 | # --------------------- | |
| 28 | AC_DEFUN([DPKG_LINKER_AS_NEEDED], [ | |
| 29 | AC_CACHE_CHECK([for --as-needed linker flag], [dpkg_cv_linker_as_needed], [ | |
| 30 | save_LDFLAGS=$LDFLAGS | |
| 31 | LDFLAGS="$LDFLAGS -Wl,--as-needed" | |
| 32 | AC_LINK_IFELSE([ | |
| 33 | AC_LANG_PROGRAM([], []) | |
| 34 | ], [ | |
| 35 | dpkg_cv_linker_as_needed=yes | |
| 36 | ], [ | |
| 37 | dpkg_cv_linker_as_needed=no | |
| 38 | ]) | |
| 39 | LDFLAGS="$save_LDFLAGS" | |
| 40 | ]) | |
| 41 | AM_CONDITIONAL([HAVE_LINKER_AS_NEEDED], | |
| 42 | [test "x$dpkg_cv_linker_as_needed" = "xyes"]) | |
| 43 | ]) | |
| 44 | ||
| 45 | # DPKG_LINKER_VERSION_SCRIPT | |
| 46 | # -------------------------- | |
| 47 | AC_DEFUN([DPKG_LINKER_VERSION_SCRIPT], [ | |
| 48 | AC_CACHE_CHECK([for --version-script linker flag], [dpkg_cv_version_script], [ | |
| 49 | echo "{ global: symbol; local: *; };" >conftest.map | |
| 50 | save_LDFLAGS=$LDFLAGS | |
| 51 | LDFLAGS="$LDFLAGS -Wl,--version-script=conftest.map" | |
| 52 | AC_LINK_IFELSE([ | |
| 53 | AC_LANG_PROGRAM([], []) | |
| 54 | ], [ | |
| 55 | dpkg_cv_version_script=yes | |
| 56 | ], [ | |
| 57 | dpkg_cv_version_script=no | |
| 58 | ]) | |
| 59 | LDFLAGS="$save_LDFLAGS" | |
| 60 | rm -f conftest.map | |
| 61 | ]) | |
| 62 | AM_CONDITIONAL([HAVE_LINKER_VERSION_SCRIPT], | |
| 63 | [test "x$dpkg_cv_version_script" = "xyes"]) | |
| 64 | ]) |