diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 44 |
1 files changed, 32 insertions, 12 deletions
diff --git a/configure.ac b/configure.ac index 11b68b7..dddab2a 100644 --- a/configure.ac +++ b/configure.ac @@ -1891,27 +1891,35 @@ AC_ARG_ENABLE(linker-plugin-flags, extra_linker_plugin_flags=) AC_SUBST(extra_linker_plugin_flags) -# Enable --enable-host-pie. -# Checked early to determine whether jit is an 'all' language +# Handle --enable-host-pie +# If host PIE executables are the default (or must be forced on) for some host, +# we must pass that configuration to the gcc directory. +gcc_host_pie= AC_ARG_ENABLE(host-pie, [AS_HELP_STRING([--enable-host-pie], [build position independent host executables])], [host_pie=$enableval case $host in - x86_64-*-darwin* | aarch64-*-darwin*) + *-*-darwin2*) if test x$host_pie != xyes ; then - # PIC is the default, and actually cannot be switched off. - echo configure.ac: warning: PIC code is required for the configured target, host-shared setting ignored. 1>&2 + # for Darwin20+ this is required. + AC_MSG_WARN([PIE executables are required for the configured host, host-pie setting ignored.]) host_pie=yes + gcc_host_pie=--enable-host-pie fi ;; *) ;; esac], [case $host in - *-*-darwin2*) host_pie=yes ;; + *-*-darwin2*) + # Default to PIE (mandatory for aarch64). + host_pie=yes + gcc_host_pie=--enable-host-pie + ;; *) host_pie=no ;; esac]) AC_SUBST(host_pie) +AC_SUBST(gcc_host_pie) # Enable --enable-host-shared. # Checked early to determine whether jit is an 'all' language @@ -1923,27 +1931,39 @@ AC_ARG_ENABLE(host-shared, x86_64-*-darwin* | aarch64-*-darwin*) if test x$host_shared != xyes ; then # PIC is the default, and actually cannot be switched off. - echo configure.ac: warning: PIC code is required for the configured target, host-shared setting ignored. 1>&2 + AC_MSG_WARN([PIC code is required for the configured host; host-shared setting ignored.]) host_shared=yes fi ;; *-*-darwin*) - if test x$host_pie == xyes ; then - echo configure.ac: warning: PIC code is required for PIE executables. 1>&2 + if test x$host_pie = xyes -a x$host_shared != xyes ; then + AC_MSG_WARN([PIC code is required for PIE host executables host-shared setting ignored.]) host_shared=yes fi ;; *) ;; esac], [case $host in + # 64B x86_64 and Aarch64 Darwin default to PIC. x86_64-*-darwin* | aarch64-*-darwin*) host_shared=yes ;; - # Darwin needs PIC objects to link PIE executables. - *-*-darwin*) host_shared=host_pie ;; + # 32B and powerpc64 Darwin must use PIC to link PIE exes. + *-*-darwin*) host_shared=$host_pie ;; *) host_shared=no;; esac]) AC_SUBST(host_shared) if test x$host_shared = xyes; then - PICFLAG=-fPIC + case $host in + *-*-darwin*) + # Since host shared is the default for 64b Darwin, and also enabled for + # host_pie, ensure that we present the PIE flag when host_pie is active. + if test x$host_pie = xyes; then + PICFLAG=-fPIE + fi + ;; + *) + PICFLAG=-fPIC + ;; + esac elif test x$host_pie = xyes; then PICFLAG=-fPIE else |