Make all-pic a user option

4 files changed, 32 insertions, 12 deletions

diff --git a/Makefile b/Makefile
index 259d624..610dbb6 100644
--- a/Makefile
+++ b/Makefile
@@ -42,7 +42,11 @@ version_M := $(basename $(version_m))
 version_l := $(basename $(version_M))
 CPPFLAGS_ALL := $(CPPFLAGS_AUTO) $(CPPFLAGS)
 CFLAGS_ALL := $(CFLAGS_AUTO) $(CFLAGS)
+ifeq ($(strip $(STATIC_LIBS_ARE_PIC)),)
 CFLAGS_SHARED := -fPIC
+else
+CFLAGS_SHARED :=
+endif
 LDFLAGS_ALL := $(LDFLAGS_AUTO) $(LDFLAGS)
 REALCC = $(CROSS_COMPILE)$(CC)
 AR := $(CROSS_COMPILE)ar
diff --git a/configure b/configure
index aa6f91f..de87b55 100755
--- a/configure
+++ b/configure
@@ -40,6 +40,7 @@ Optional features:
   --disable-static              do not build static libraries [enabled]
   --disable-allstatic           do not prefer linking against static libraries [enabled]
   --enable-static-libc          make entirely static binaries [disabled]
+  --enable-all-pic              build everything as PIC [enabled iff toolchain builds PIE]
   --enable-slashpackage[=ROOT]  assume /package installation at ROOT [disabled]
   --enable-absolute-paths       do not rely on PATH to access this package's binaries,
                                   hardcode absolute BINDIR/foobar paths instead [disabled]
@@ -142,6 +143,7 @@ sysdeps='$prefix/lib/skalibs/sysdeps'
 manualsysdeps=false
 shared=false
 static=true
+allpic=detect
 slashpackage=false
 abspath=false
 sproot=
@@ -178,6 +180,8 @@ for arg ; do
     --disable-allstatic|--enable-allstatic=no) allstatic=false ; evenmorestatic=false ;;
     --enable-static-libc|--enable-static-libc=yes) allstatic=true ; evenmorestatic=true ;;
     --disable-static-libc|--enable-static-libc=no) evenmorestatic=false ;;
+    --enable-all-pic|--enable-all-pic=yes) allpic=true ;;
+    --disable-all-pic|--enable-all-pic=no) allpic=false ;;
     --enable-slashpackage=*) sproot=${arg#*=} ; slashpackage=true ; ;;
     --enable-slashpackage) sproot= ; slashpackage=true ;;
     --disable-slashpackage) sproot= ; slashpackage=false ;;
@@ -292,14 +296,18 @@ if [ "x$target" != "x$(cat $sysdeps/target)" ] ; then
   exit 1
 fi
 
-defaultpie=false
-echo "Checking whether we're building PIE..."
-if $CC_AUTO $CPPFLAGS_AUTO $CPPFLAGS $CPPFLAGS_POST $CFLAGS_AUTO $CFLAGS $CFLAGS_POST -dM -E - < /dev/null | grep -qF __PIE__ ; then
-  defaultpie=true
-  CFLAGS_AUTO="$CFLAGS_AUTO -fPIC"
-  echo "  ... yes"
-else
-  echo "  ... no"
+if test $allpic = detect ; then
+  echo "Checking whether we need to build everything as PIC..."
+  if $CC_AUTO $CPPFLAGS_AUTO $CPPFLAGS $CPPFLAGS_POST $CFLAGS_AUTO $CFLAGS $CFLAGS_POST -dM -E - < /dev/null | grep -qF __PIE__ ; then
+    allpic=true
+    echo "  ... yes"
+  else
+    allpic=false
+    echo "  ... no"
+  fi
+fi
+if $allpic ; then
+  tryflag CFLAGS_AUTO -fPIC
 fi
 
 spawn_lib=$(cat $sysdeps/spawn.lib)
@@ -414,10 +422,10 @@ if $shared ; then
 else
   echo "DO_SHARED :="
 fi
-if $defaultpie ; then
-  echo "DEFAULT_PIE := 1"
+if $allpic ; then
+  echo "STATIC_LIBS_ARE_PIC := 1"
 else
-  echo "DEFAULT_PIE :="
+  echo "STATIC_LIBS_ARE_PIC :="
 fi
 
 exec 1>&3 3>&-
diff --git a/package/deps.mak b/package/deps.mak
index 54b0358..73762ee 100644
--- a/package/deps.mak
+++ b/package/deps.mak
@@ -162,10 +162,18 @@ s6-dnstxt: EXTRA_LIBS := ${SOCKET_LIB} ${TAINNOW_LIB}
 s6-dnstxt: src/clients/s6-dnstxt.o ${LIBS6DNS} -lskarnet
 s6-randomip: EXTRA_LIBS := ${SOCKET_LIB} ${TAINNOW_LIB}
 s6-randomip: src/clients/s6-randomip.o -lskarnet
+ifeq ($(strip $(STATIC_LIBS_ARE_PIC)),)
 libs6dns.a.xyzzy: src/libs6dns/s6dns_constants_error.o src/libs6dns/s6dns_constants_error_str.o src/libs6dns/s6dns_debughook_zero.o src/libs6dns/s6dns_domain_arpafromip4.o src/libs6dns/s6dns_domain_arpafromip6.o src/libs6dns/s6dns_domain_decode.o src/libs6dns/s6dns_domain_encode.o src/libs6dns/s6dns_domain_encodelist.o src/libs6dns/s6dns_domain_fromstring.o src/libs6dns/s6dns_domain_fromstring_noqualify_encode.o src/libs6dns/s6dns_domain_fromstring_qualify_encode.o src/libs6dns/s6dns_domain_noqualify.o src/libs6dns/s6dns_domain_qualify.o src/libs6dns/s6dns_domain_tostring.o src/libs6dns/s6dns_engine.o src/libs6dns/s6dns_engine_free.o src/libs6dns/s6dns_engine_freen.o src/libs6dns/s6dns_engine_here.o src/libs6dns/s6dns_engine_nextdeadline.o src/libs6dns/s6dns_engine_zero.o src/libs6dns/s6dns_fmt_domainlist.o src/libs6dns/s6dns_fmt_hinfo.o src/libs6dns/s6dns_fmt_mx.o src/libs6dns/s6dns_fmt_soa.o src/libs6dns/s6dns_fmt_srv.o src/libs6dns/s6dns_message_counts_next.o src/libs6dns/s6dns_message_counts_pack.o src/libs6dns/s6dns_message_counts_unpack.o src/libs6dns/s6dns_message_counts_zero.o src/libs6dns/s6dns_message_get_domain.o src/libs6dns/s6dns_message_get_domain_internal.o src/libs6dns/s6dns_message_get_hinfo.o src/libs6dns/s6dns_message_get_string.o src/libs6dns/s6dns_message_get_string_internal.o src/libs6dns/s6dns_message_get_strings.o src/libs6dns/s6dns_message_get_mx.o src/libs6dns/s6dns_message_get_soa.o src/libs6dns/s6dns_message_get_srv.o src/libs6dns/s6dns_message_header_pack.o src/libs6dns/s6dns_message_header_unpack.o src/libs6dns/s6dns_message_header_zero.o src/libs6dns/s6dns_message_parse_answer_aaaa.o src/libs6dns/s6dns_message_parse_answer_a.o src/libs6dns/s6dns_message_parse_answer_domain.o src/libs6dns/s6dns_message_parse_answer_hinfo.o src/libs6dns/s6dns_message_parse_answer_mx.o src/libs6dns/s6dns_message_parse_answer_soa.o src/libs6dns/s6dns_message_parse_answer_srv.o src/libs6dns/s6dns_message_parse_answer_strings.o src/libs6dns/s6dns_message_parse.o src/libs6dns/s6dns_message_parse_getrr.o src/libs6dns/s6dns_message_parse_init.o src/libs6dns/s6dns_message_parse_next.o src/libs6dns/s6dns_message_parse_skipqd.o src/libs6dns/s6dns_rci_free.o src/libs6dns/s6dns_rci_here.o src/libs6dns/s6dns_rci_init.o src/libs6dns/s6dns_rci_zero.o src/libs6dns/s6dns_resolve_core.o src/libs6dns/s6dns_resolve_parse.o src/libs6dns/s6dns_resolven_loop.o src/libs6dns/s6dns_resolven_parse.o src/libs6dns/s6dns_resolve_dpag.o src/libs6dns/s6dns_resolve_mpag.o src/libs6dns/s6dns_resolve_name4.o src/libs6dns/s6dns_resolve_name6.o src/libs6dns/s6dns_resolvenoq.o src/libs6dns/s6dns_resolveq.o src/libs6dns/s6dns_resolvenoq_aaaaa.o src/libs6dns/s6dns_resolveq_aaaaa.o src/libs6dns/s6dns_analyze_packet.o src/libs6dns/s6dns_analyze_qtype_parse.o src/libs6dns/s6dns_analyze_record.o src/libs6dns/s6dns_analyze_record_a.o src/libs6dns/s6dns_analyze_record_aaaa.o src/libs6dns/s6dns_analyze_record_hinfo.o src/libs6dns/s6dns_analyze_record_mx.o src/libs6dns/s6dns_analyze_record_soa.o src/libs6dns/s6dns_analyze_record_srv.o src/libs6dns/s6dns_analyze_record_domain.o src/libs6dns/s6dns_analyze_record_strings.o src/libs6dns/s6dns_analyze_record_unknown.o src/libs6dns/s6dns_analyze_rtypetable.o src/libs6dns/s6dns_debug_dumpdt_stdout.o src/libs6dns/s6dns_debug_dumpdt_stderr.o src/libs6dns/s6dns_debug_dumpdt_post_recv.o src/libs6dns/s6dns_debug_dumpdt_pre_send.o src/libs6dns/s6dns_debug_dumpdt_post_send.o src/libs6dns/s6dns_init.o src/libs6dns/s6dns_finish.o
+else
+libs6dns.a.xyzzy: src/libs6dns/s6dns_constants_error.lo src/libs6dns/s6dns_constants_error_str.lo src/libs6dns/s6dns_debughook_zero.lo src/libs6dns/s6dns_domain_arpafromip4.lo src/libs6dns/s6dns_domain_arpafromip6.lo src/libs6dns/s6dns_domain_decode.lo src/libs6dns/s6dns_domain_encode.lo src/libs6dns/s6dns_domain_encodelist.lo src/libs6dns/s6dns_domain_fromstring.lo src/libs6dns/s6dns_domain_fromstring_noqualify_encode.lo src/libs6dns/s6dns_domain_fromstring_qualify_encode.lo src/libs6dns/s6dns_domain_noqualify.lo src/libs6dns/s6dns_domain_qualify.lo src/libs6dns/s6dns_domain_tostring.lo src/libs6dns/s6dns_engine.lo src/libs6dns/s6dns_engine_free.lo src/libs6dns/s6dns_engine_freen.lo src/libs6dns/s6dns_engine_here.lo src/libs6dns/s6dns_engine_nextdeadline.lo src/libs6dns/s6dns_engine_zero.lo src/libs6dns/s6dns_fmt_domainlist.lo src/libs6dns/s6dns_fmt_hinfo.lo src/libs6dns/s6dns_fmt_mx.lo src/libs6dns/s6dns_fmt_soa.lo src/libs6dns/s6dns_fmt_srv.lo src/libs6dns/s6dns_message_counts_next.lo src/libs6dns/s6dns_message_counts_pack.lo src/libs6dns/s6dns_message_counts_unpack.lo src/libs6dns/s6dns_message_counts_zero.lo src/libs6dns/s6dns_message_get_domain.lo src/libs6dns/s6dns_message_get_domain_internal.lo src/libs6dns/s6dns_message_get_hinfo.lo src/libs6dns/s6dns_message_get_string.lo src/libs6dns/s6dns_message_get_string_internal.lo src/libs6dns/s6dns_message_get_strings.lo src/libs6dns/s6dns_message_get_mx.lo src/libs6dns/s6dns_message_get_soa.lo src/libs6dns/s6dns_message_get_srv.lo src/libs6dns/s6dns_message_header_pack.lo src/libs6dns/s6dns_message_header_unpack.lo src/libs6dns/s6dns_message_header_zero.lo src/libs6dns/s6dns_message_parse_answer_aaaa.lo src/libs6dns/s6dns_message_parse_answer_a.lo src/libs6dns/s6dns_message_parse_answer_domain.lo src/libs6dns/s6dns_message_parse_answer_hinfo.lo src/libs6dns/s6dns_message_parse_answer_mx.lo src/libs6dns/s6dns_message_parse_answer_soa.lo src/libs6dns/s6dns_message_parse_answer_srv.lo src/libs6dns/s6dns_message_parse_answer_strings.lo src/libs6dns/s6dns_message_parse.lo src/libs6dns/s6dns_message_parse_getrr.lo src/libs6dns/s6dns_message_parse_init.lo src/libs6dns/s6dns_message_parse_next.lo src/libs6dns/s6dns_message_parse_skipqd.lo src/libs6dns/s6dns_rci_free.lo src/libs6dns/s6dns_rci_here.lo src/libs6dns/s6dns_rci_init.lo src/libs6dns/s6dns_rci_zero.lo src/libs6dns/s6dns_resolve_core.lo src/libs6dns/s6dns_resolve_parse.lo src/libs6dns/s6dns_resolven_loop.lo src/libs6dns/s6dns_resolven_parse.lo src/libs6dns/s6dns_resolve_dpag.lo src/libs6dns/s6dns_resolve_mpag.lo src/libs6dns/s6dns_resolve_name4.lo src/libs6dns/s6dns_resolve_name6.lo src/libs6dns/s6dns_resolvenoq.lo src/libs6dns/s6dns_resolveq.lo src/libs6dns/s6dns_resolvenoq_aaaaa.lo src/libs6dns/s6dns_resolveq_aaaaa.lo src/libs6dns/s6dns_analyze_packet.lo src/libs6dns/s6dns_analyze_qtype_parse.lo src/libs6dns/s6dns_analyze_record.lo src/libs6dns/s6dns_analyze_record_a.lo src/libs6dns/s6dns_analyze_record_aaaa.lo src/libs6dns/s6dns_analyze_record_hinfo.lo src/libs6dns/s6dns_analyze_record_mx.lo src/libs6dns/s6dns_analyze_record_soa.lo src/libs6dns/s6dns_analyze_record_srv.lo src/libs6dns/s6dns_analyze_record_domain.lo src/libs6dns/s6dns_analyze_record_strings.lo src/libs6dns/s6dns_analyze_record_unknown.lo src/libs6dns/s6dns_analyze_rtypetable.lo src/libs6dns/s6dns_debug_dumpdt_stdout.lo src/libs6dns/s6dns_debug_dumpdt_stderr.lo src/libs6dns/s6dns_debug_dumpdt_post_recv.lo src/libs6dns/s6dns_debug_dumpdt_pre_send.lo src/libs6dns/s6dns_debug_dumpdt_post_send.lo src/libs6dns/s6dns_init.lo src/libs6dns/s6dns_finish.lo
+endif
 libs6dns.so.xyzzy: EXTRA_LIBS := -lskarnet
 libs6dns.so.xyzzy: src/libs6dns/s6dns_constants_error.lo src/libs6dns/s6dns_constants_error_str.lo src/libs6dns/s6dns_debughook_zero.lo src/libs6dns/s6dns_domain_arpafromip4.lo src/libs6dns/s6dns_domain_arpafromip6.lo src/libs6dns/s6dns_domain_decode.lo src/libs6dns/s6dns_domain_encode.lo src/libs6dns/s6dns_domain_encodelist.lo src/libs6dns/s6dns_domain_fromstring.lo src/libs6dns/s6dns_domain_fromstring_noqualify_encode.lo src/libs6dns/s6dns_domain_fromstring_qualify_encode.lo src/libs6dns/s6dns_domain_noqualify.lo src/libs6dns/s6dns_domain_qualify.lo src/libs6dns/s6dns_domain_tostring.lo src/libs6dns/s6dns_engine.lo src/libs6dns/s6dns_engine_free.lo src/libs6dns/s6dns_engine_freen.lo src/libs6dns/s6dns_engine_here.lo src/libs6dns/s6dns_engine_nextdeadline.lo src/libs6dns/s6dns_engine_zero.lo src/libs6dns/s6dns_fmt_domainlist.lo src/libs6dns/s6dns_fmt_hinfo.lo src/libs6dns/s6dns_fmt_mx.lo src/libs6dns/s6dns_fmt_soa.lo src/libs6dns/s6dns_fmt_srv.lo src/libs6dns/s6dns_message_counts_next.lo src/libs6dns/s6dns_message_counts_pack.lo src/libs6dns/s6dns_message_counts_unpack.lo src/libs6dns/s6dns_message_counts_zero.lo src/libs6dns/s6dns_message_get_domain.lo src/libs6dns/s6dns_message_get_domain_internal.lo src/libs6dns/s6dns_message_get_hinfo.lo src/libs6dns/s6dns_message_get_string.lo src/libs6dns/s6dns_message_get_string_internal.lo src/libs6dns/s6dns_message_get_strings.lo src/libs6dns/s6dns_message_get_mx.lo src/libs6dns/s6dns_message_get_soa.lo src/libs6dns/s6dns_message_get_srv.lo src/libs6dns/s6dns_message_header_pack.lo src/libs6dns/s6dns_message_header_unpack.lo src/libs6dns/s6dns_message_header_zero.lo src/libs6dns/s6dns_message_parse_answer_aaaa.lo src/libs6dns/s6dns_message_parse_answer_a.lo src/libs6dns/s6dns_message_parse_answer_domain.lo src/libs6dns/s6dns_message_parse_answer_hinfo.lo src/libs6dns/s6dns_message_parse_answer_mx.lo src/libs6dns/s6dns_message_parse_answer_soa.lo src/libs6dns/s6dns_message_parse_answer_srv.lo src/libs6dns/s6dns_message_parse_answer_strings.lo src/libs6dns/s6dns_message_parse.lo src/libs6dns/s6dns_message_parse_getrr.lo src/libs6dns/s6dns_message_parse_init.lo src/libs6dns/s6dns_message_parse_next.lo src/libs6dns/s6dns_message_parse_skipqd.lo src/libs6dns/s6dns_rci_free.lo src/libs6dns/s6dns_rci_here.lo src/libs6dns/s6dns_rci_init.lo src/libs6dns/s6dns_rci_zero.lo src/libs6dns/s6dns_resolve_core.lo src/libs6dns/s6dns_resolve_parse.lo src/libs6dns/s6dns_resolven_loop.lo src/libs6dns/s6dns_resolven_parse.lo src/libs6dns/s6dns_resolve_dpag.lo src/libs6dns/s6dns_resolve_mpag.lo src/libs6dns/s6dns_resolve_name4.lo src/libs6dns/s6dns_resolve_name6.lo src/libs6dns/s6dns_resolvenoq.lo src/libs6dns/s6dns_resolveq.lo src/libs6dns/s6dns_resolvenoq_aaaaa.lo src/libs6dns/s6dns_resolveq_aaaaa.lo src/libs6dns/s6dns_analyze_packet.lo src/libs6dns/s6dns_analyze_qtype_parse.lo src/libs6dns/s6dns_analyze_record.lo src/libs6dns/s6dns_analyze_record_a.lo src/libs6dns/s6dns_analyze_record_aaaa.lo src/libs6dns/s6dns_analyze_record_hinfo.lo src/libs6dns/s6dns_analyze_record_mx.lo src/libs6dns/s6dns_analyze_record_soa.lo src/libs6dns/s6dns_analyze_record_srv.lo src/libs6dns/s6dns_analyze_record_domain.lo src/libs6dns/s6dns_analyze_record_strings.lo src/libs6dns/s6dns_analyze_record_unknown.lo src/libs6dns/s6dns_analyze_rtypetable.lo src/libs6dns/s6dns_debug_dumpdt_stdout.lo src/libs6dns/s6dns_debug_dumpdt_stderr.lo src/libs6dns/s6dns_debug_dumpdt_post_recv.lo src/libs6dns/s6dns_debug_dumpdt_pre_send.lo src/libs6dns/s6dns_debug_dumpdt_post_send.lo src/libs6dns/s6dns_init.lo src/libs6dns/s6dns_finish.lo
+ifeq ($(strip $(STATIC_LIBS_ARE_PIC)),)
 libskadns.a.xyzzy: src/skadns/skadns_cancel.o src/skadns/skadns_end.o src/skadns/skadns_packet.o src/skadns/skadns_packetlen.o src/skadns/skadns_release.o src/skadns/skadns_send.o src/skadns/skadns_start.o src/skadns/skadns_startf.o src/skadns/skadns_update.o src/skadns/skadns_zero.o
+else
+libskadns.a.xyzzy: src/skadns/skadns_cancel.lo src/skadns/skadns_end.lo src/skadns/skadns_packet.lo src/skadns/skadns_packetlen.lo src/skadns/skadns_release.lo src/skadns/skadns_send.lo src/skadns/skadns_start.lo src/skadns/skadns_startf.lo src/skadns/skadns_update.lo src/skadns/skadns_zero.lo
+endif
 libskadns.so.xyzzy: EXTRA_LIBS := -lskarnet
 libskadns.so.xyzzy: src/skadns/skadns_cancel.lo src/skadns/skadns_end.lo src/skadns/skadns_packet.lo src/skadns/skadns_packetlen.lo src/skadns/skadns_release.lo src/skadns/skadns_send.lo src/skadns/skadns_start.lo src/skadns/skadns_startf.lo src/skadns/skadns_update.lo src/skadns/skadns_zero.lo
 skadnsd: EXTRA_LIBS := ${SOCKET_LIB} ${TAINNOW_LIB}
diff --git a/tools/gen-deps.sh b/tools/gen-deps.sh
index 67ec2d4..6383ac2 100755
--- a/tools/gen-deps.sh
+++ b/tools/gen-deps.sh
@@ -65,7 +65,7 @@ for dir in $(ls -1 src | grep -v ^include) ; do
         deps="$deps src/$dir/$dep"
       fi
     done < src/$dir/deps-lib/$file
-    echo 'ifeq ($(strip $(DEFAULT_PIE)),)'
+    echo 'ifeq ($(strip $(STATIC_LIBS_ARE_PIC)),)'
     echo "lib${file}.a.xyzzy:$deps"
     echo else
     echo "lib${file}.a.xyzzy:$(echo "$deps" | sed 's/\.o/.lo/g')"