⛏️ index : buildtools.git

2671c4b9592d87c7dfdabcd95c4b482538bbc366 [patch]

08971c352d93074ed6fa27cae5007db2a7c199ce

1d198a6bf627fe439524cfa8a6a42202b9ce72f6

2671c4b9592d87c7dfdabcd95c4b482538bbc366.tar.gz

Jambase: Change default ARFLAGS and enable NOARSCAN by default.

On most systems, "D" (deterministic) is now the default archiving mode,
and so specifying "u" will throw a warning that "D" is being used anyway.
Jam previously assumed, as it was passing "u", that the timestamps inside
.a's were valid when they were actually 0, which was leading to spurious
rebuilds of .as.

After this change, we assume archives cannot be scanned for timestamps,
which should stop the spurious rebuilds of targets on most systems.

Diff

 jam/Jambase | 22 +++++++++-------------
 1 file changed, 9 insertions(+), 13 deletions(-)

diff --git a/jam/Jambase b/jam/Jambase
index 6ea0844..8f97641 100644
--- a/jam/Jambase
+++ a/jam/Jambase
@@ -167,7 +167,6 @@
					$(MSVC)\\lib\\oldnames.lib
					;
		LINKLIBS	?= ;
		NOARSCAN	?= true ;
		OPTIM		?=  ;
		STDHDRS		?= $(MSVC)\\include ;
		UNDEFFLAG	?= "/u _" ;
@@ -221,7 +220,6 @@
	LINK		?= mwld ;
	LINKFLAGS	?= "" ;
	MANDIR		?= /boot/home/config/man ;
	NOARSCAN	?= true ;
	RANLIB		?= ranlib ;
	STDHDRS		?= /boot/develop/headers/posix ;
	YACC		?= bison -y ;
@@ -240,7 +238,6 @@
	LIBDIR		?= /boot/home/config/lib ;
	LINK		?= gcc ;
	MANDIR		?= /boot/home/config/man ;
	NOARSCAN	?= true ;
	RANLIB		?= ranlib ;
	STDHDRS		?= /boot/develop/headers/posix ;
	YACC		?= bison -y ;
@@ -259,7 +256,6 @@
	LIBDIR		?= /boot/common/lib ;
	LINK		?= gcc ;
	MANDIR		?= /boot/common/man ;
	NOARSCAN	?= true ;
	RANLIB		?= ranlib ;
	STDHDRS		?= /boot/develop/headers/posix ;
	YACC		?= bison -y ;
@@ -290,7 +286,6 @@
	C++FLAGS	?= -Q ;	# quiet
	LINK		?= $(CC) ;
	LINKFLAGS	?= -Q ;	# quiet
	NOARSCAN	?= true ;
	RANLIB		?= "" ;

	# UNIX defaults
@@ -315,7 +310,7 @@
# General defaults; a lot like UNIX
#

AR		?= ar ru ;
AR		?= ar rD ;
AS		?= as ;
ASFLAGS		?= ;
AWK		?= awk ;
@@ -335,21 +330,22 @@
INSTALLGRIST	?= installed ;
JAMFILE		?= Jamfile ;
JAMRULES	?= Jamrules ;
LEX		?= ;
LEX			?= ;
LIBDIR		?= /usr/local/lib ;
LINK		?= $(CC) ;
LINKFLAGS	?= ;
LINKLIBS	?= ;
LN		?= ln ;
LN			?= ln ;
NOARSCAN	?= true ;
MANDIR		?= /usr/local/man ;
MKDIR		?= mkdir ;
MV		?= mv -f ;
MV			?= mv -f ;
OPTIM		?= ;
RCP		?= rcp ;
RM		?= rm -f ;
RCP			?= rcp ;
RM			?= rm -f ;
RMDIR		?= $(RM) ;
RSH		?= rsh ;
SED		?= sed ;
RSH			?= rsh ;
SED			?= sed ;
SHELLHEADER	?= "#!/bin/sh" ;
SHELLMODE	?= 755 ;
SLASH		?= / ;