erts: Add cflags, ldflags and config.h into executable

6 files changed, 122 insertions, 3 deletions

diff --git a/erts/emulator/Makefile.in b/erts/emulator/Makefile.in
index 58e83540e1..9751982103 100644
--- a/erts/emulator/Makefile.in
+++ b/erts/emulator/Makefile.in
@@ -387,6 +387,13 @@ else
 UNIX_ONLY_BUILDS =
 endif
 
+ifeq ($(TARGET), win32)
+TMPVAR := $(shell LANG=C $(PERL) utils/make_compiler_flags -o $(TTF_DIR)/erl_compile_flags.h -v CONFIG_H "N/A" -v CFLAGS "$(CFLAGS)" -v LDFLAGS "$(LDFLAGS)")
+else
+# We force this to be run every time this makefile is executed
+TMPVAR := $(shell LANG=C $(PERL) utils/make_compiler_flags -o $(TTF_DIR)/erl_compile_flags.h -f CONFIG_H "$(ERL_TOP)/erts/$(TARGET)/config.h" -v CFLAGS "$(CFLAGS)" -v LDFLAGS "$(LDFLAGS)")
+endif
+
 .PHONY: all
 ifdef VOID_EMULATOR
 all:
@@ -959,6 +966,7 @@ SED_REPL_TTF_DIR=s|$(TTF_DIR)/|$$(TTF_DIR)/|g
 SED_REPL_ERL_TOP=s|\([ 	]\)$(ERL_TOP)/|\1$$(ERL_TOP)/|g;s|^$(ERL_TOP)/|$$(ERL_TOP)/|g
 SED_REPL_POLL=s|$$(OBJDIR)/erl_poll.o|$$(OBJDIR)/erl_poll.kp.o $$(OBJDIR)/erl_poll.nkp.o|g
 SED_REPL_CHK_IO=s|$$(OBJDIR)/erl_check_io.o|$$(OBJDIR)/erl_check_io.kp.o $$(OBJDIR)/erl_check_io.nkp.o|g
+SED_REPL_TTF_COMP_FLAGS=s|\([^/]\)erl_compile_flags\.h|\1$$(TTF_DIR)/erl_compile_flags\.h|g
 
 ifeq ($(TARGET),win32)
 #SED_PREFIX=$(SED_REPL_WIN_DRIVE);
@@ -973,7 +981,7 @@ else
 SED_SUFFIX=
 endif
 
-SED_DEPEND=sed '$(SED_PREFIX)$(SED_REPL_O);$(SED_REPL_TTF_DIR);$(SED_REPL_ERL_TOP)$(SED_SUFFIX)'
+SED_DEPEND=sed '$(SED_PREFIX)$(SED_REPL_O);$(SED_REPL_TTF_DIR);$(SED_REPL_ERL_TOP)$(SED_SUFFIX);$(SED_REPL_TTF_COMP_FLAGS)'
 SED_DEPEND_ZLIB=sed '$(SED_PREFIX)$(SED_REPL_O_ZLIB)'
 
 ifdef HIPE_ENABLED
diff --git a/erts/emulator/beam/atom.names b/erts/emulator/beam/atom.names
index eba1d0fa23..c2f32ba089 100644
--- a/erts/emulator/beam/atom.names
+++ b/erts/emulator/beam/atom.names
@@ -139,6 +139,7 @@ atom caseless
 atom catchlevel
 atom cd
 atom cdr
+atom cflags
 atom characters_to_binary_int
 atom characters_to_list_int
 atom clear
@@ -150,6 +151,7 @@ atom compact
 atom compat_rel
 atom compile
 atom compressed
+atom config_h
 atom connect
 atom connected
 atom connection_closed
@@ -301,6 +303,7 @@ atom label
 atom large_heap
 atom last_calls
 atom latin1
+atom ldflags
 atom Le='=<'
 atom lf
 atom line
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index e4fbd21c0e..a43eee6420 100755
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -30,6 +30,7 @@
 #include "bif.h"
 #include "big.h"
 #include "erl_version.h"
+#include "erl_compile_flags.h"
 #include "erl_db_util.h"
 #include "erl_message.h"
 #include "erl_binary.h"
@@ -2610,6 +2611,26 @@ BIF_RETTYPE system_info_1(BIF_ALIST_1)
 	BIF_RET(am_true);
     }
 #endif
+    else if (ERTS_IS_ATOM_STR("compile_info",BIF_ARG_1)) {
+      Eterm *hp = HAlloc(BIF_P, 3*3+3*2); /* three two tuples +
+					     three list elems */
+      Eterm res = NIL;
+      Eterm *lhp = HAlloc(BIF_P, 2*(strlen(erts_build_flags_CONFIG_H)+
+				    strlen(erts_build_flags_CFLAGS)+
+				    strlen(erts_build_flags_LDFLAGS)));
+
+      res = CONS(hp+9,TUPLE2(hp, am_config_h,
+			     buf_to_intlist(&lhp, erts_build_flags_CONFIG_H,
+					    strlen(erts_build_flags_CONFIG_H), NIL)),res);
+      res = CONS(hp+11,TUPLE2(hp+3, am_cflags,
+			      buf_to_intlist(&lhp, erts_build_flags_CFLAGS,
+					     strlen(erts_build_flags_CFLAGS), NIL)),res);
+      res = CONS(hp+13,TUPLE2(hp+6, am_ldflags,
+			      buf_to_intlist(&lhp, erts_build_flags_LDFLAGS,
+					     strlen(erts_build_flags_LDFLAGS), NIL)),res);
+
+      BIF_RET(res);
+    }
 
     BIF_ERROR(BIF_P, BADARG);
 }
diff --git a/erts/emulator/beam/global.h b/erts/emulator/beam/global.h
index e5807b5ce6..56f8f2b3ea 100755
--- a/erts/emulator/beam/global.h
+++ b/erts/emulator/beam/global.h
@@ -937,7 +937,7 @@ char* Sint_to_buf(Sint, struct Sint_buf*);
 #define ERTS_IOLIST_OVERFLOW 1
 #define ERTS_IOLIST_TYPE 2
 
-Eterm buf_to_intlist(Eterm**, char*, size_t, Eterm); /* most callers pass plain char*'s */
+Eterm buf_to_intlist(Eterm**, const char*, size_t, Eterm); /* most callers pass plain char*'s */
 
 #define ERTS_IOLIST_TO_BUF_OVERFLOW	(~((ErlDrvSizeT) 0))
 #define ERTS_IOLIST_TO_BUF_TYPE_ERROR	(~((ErlDrvSizeT) 1))
diff --git a/erts/emulator/beam/utils.c b/erts/emulator/beam/utils.c
index 84deaecb87..bd2be7afca 100644
--- a/erts/emulator/beam/utils.c
+++ b/erts/emulator/beam/utils.c
@@ -2983,7 +2983,7 @@ char* Sint_to_buf(Sint n, struct Sint_buf *buf)
 */
 
 Eterm
-buf_to_intlist(Eterm** hpp, char *buf, size_t len, Eterm tail)
+buf_to_intlist(Eterm** hpp, const char *buf, size_t len, Eterm tail)
 {
     Eterm* hp = *hpp;
     size_t i = len;
diff --git a/erts/emulator/utils/make_compiler_flags b/erts/emulator/utils/make_compiler_flags
new file mode 100755
index 0000000000..cebe8cd0c5
--- /dev/null
+++ b/erts/emulator/utils/make_compiler_flags
@@ -0,0 +1,87 @@
+#!/usr/bin/env perl
+#
+# %CopyrightBegin%
+#
+# Copyright Ericsson AB 1999-2009. All Rights Reserved.
+#
+# The contents of this file are subject to the Erlang Public License,
+# Version 1.1, (the "License"); you may not use this file except in
+# compliance with the License. You should have received a copy of the
+# Erlang Public License along with this software. If not, it can be
+# retrieved online at http://www.erlang.org/.
+#
+# Software distributed under the License is distributed on an "AS IS"
+# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+# the License for the specific language governing rights and limitations
+# under the License.
+#
+# %CopyrightEnd%
+#
+use strict;
+use File::Copy;
+# This program generates global constants that contains
+# config.h, CFLAGS and LDFLAGS
+
+my $file = "";
+my %constants = ();
+my $prev_file = "";
+
+while (@ARGV) {
+    my $d = shift;
+    if ( $d =~ /^-o$/ ) {
+	$file = shift or die("-o requires argument");
+	open FILE, "<$file" or next;
+	$prev_file = do { local $/; <FILE> };
+	close FILE;
+	next;
+    }
+    if ( $d =~ /^-f/ ) {
+	my $var = shift or die("-f requires two argument");
+	my $value = shift or die("-f requires two argument");
+	open FILE, "<$value";
+	$value = do { local $/; <FILE> };
+	close FILE;
+
+	$value =~ s/\n/\\n\\\n/g;
+
+	$constants{$var} = $value;
+    }
+    if ( $d =~ /^-v/ ) {
+	my $var = shift or die("-v requires two argument");
+	my $value = shift;
+	$constants{$var} = $value;
+    }
+}
+
+foreach(keys %constants) {
+    my $value = $constants{$_};
+    $value =~ s/"/\\"/g;
+    $constants{$_} = $value
+}
+
+# Did we want output to a file?
+open(my $oldout, ">&STDOUT")     or die "Can't dup STDOUT: $!";
+if ( $file ) {
+    open STDOUT, ">$file.tmp" or die("can't open $file for writing");
+}
+
+my(@prog) = split('/', $0);
+my($prog) = $prog[$#prog];
+print "/* Warning: Do not edit this file.\n";
+print "   Auto-generated by '$prog'.*/\n";
+
+foreach(keys %constants) {
+    print "const char* erts_build_flags_$_ = \"$constants{$_}\";\n"
+}
+
+open(STDOUT, ">&", $oldout) or die "Can't dup \$oldout: $!";
+
+open FILE, "<$file.tmp";
+my $new_file = do { local $/; <FILE> };
+close FILE;
+
+if ($new_file ne $prev_file) {
+    move("$file.tmp","$file");
+} else {
+    unlink("$file.tmp");
+}