Bug#199782: gcc-snapshot: Is there any reason why build doesn't use -j?

[Ian Wienand]

Package: gcc-snapshot
Version: 20030531-2
Severity: wishlist

Is there any particular reason why the Debian build  
process doesn't use -j for multiple jobs?  Attached is a patch 
that keeps my machine busy and cuts the build time a bit.

-- System Information:
Debian Release: testing/unstable
Architecture: ia64
Kernel: Linux tartufi 2.5.72uni  #17 SMP Wed Jul 2 16:03:07 EST 2003 ia64
Locale: LANG=C, LC_CTYPE=C

Versions of packages gcc-snapshot depends on:
ii  binutils                 2.14.90.0.4-0.1 The GNU assembler, linker and bina
ii  libc6.1                  2.3.1-17        GNU C Library: Shared libraries an
ii  xlibs                    4.2.1-8         X Window System client libraries
ii  zlib1g                   1:1.1.4-13      compression library - runtime

-- no debconf information


--- gcc-snapshot-20030531-orig/debian/rules2    2003-07-03 12:27:11.000000000 
+1000
+++ gcc-snapshot-20030531/debian/rules2 2003-07-03 12:09:01.000000000 +1000
@@ -16,6 +16,10 @@
 IP     = install -p -m 755     # Install program
 IS     = install -p -m 755     # Install script
 
+#number of jobs to run for build
+NJOBS   = $(shell if [ -f /proc/cpuinfo ] ; then echo `cat /proc/cpuinfo | 
grep 'processor' | wc -l` ; else echo 1 ; fi)
+
+
 # the recipient for the test summaries. Send with: debian/rules mail-summary
 S_EMAIL = [EMAIL PROTECTED] [EMAIL PROTECTED] $(shell whoami)
 #S_EMAIL = [EMAIL PROTECTED] $(shell whoami)
@@ -227,7 +231,7 @@
        ( \
          set +e; \
          PATH=$(PWD)/bin:$$PATH \
-           $(MAKE) -C $(builddir) bootstrap-lean \
+           $(MAKE) -C $(builddir) -j$(NJOBS) bootstrap-lean \
                CC="$(CC)" CFLAGS="$(CFLAGS)" \
                BOOT_CFLAGS="$(BOOT_CFLAGS)" LDFLAGS="$(LDFLAGS)" \
                STAGE1_CFLAGS="$(STAGE1_CFLAGS)" \
@@ -240,7 +244,7 @@
        ( \
          set +e; \
          PATH=$(PWD)/bin:$$PATH \
-           $(MAKE) -C $(builddir) \
+           $(MAKE) -C -j$(NJOBS) $(builddir) \
                LANGUAGES="$(shell echo $(enabled_languages)|tr -s ' ' ',')" \
                CC="$(CC)" CFLAGS="$(CFLAGS)" \
                BOOT_CFLAGS="$(BOOT_CFLAGS)" LDFLAGS="$(LDFLAGS)" \
@@ -262,11 +266,11 @@
   ifeq ($(with_shared_ada),yes)
        LD_LIBRARY_PATH=$(builddir)/gcc/ada \
        PATH=$(PWD)/bin:$$PATH \
-               $(MAKE) -C $(builddir)/gcc gnatlib-shared gnatlib gnattools
+               $(MAKE) -j$(NJOBS) -C $(builddir)/gcc gnatlib-shared gnatlib 
gnattools
   else
        LD_LIBRARY_PATH=$(builddir)/gcc/ada \
        PATH=$(PWD)/bin:$$PATH \
-               $(MAKE) -C $(builddir)/gcc gnatlib gnattools
+               $(MAKE) -j$(NJOBS) -C $(builddir)/gcc gnatlib gnattools
   endif
 endif