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[PATCH] Improve the compilation-time settings interface

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Describe variables which make itself takes and adjusts compilation
accordingly (MOZILLA_SHA1, NO_OPENSSL, PPC_SHA1), and make adding
defines more convenient through the $DEFINES variable. $COPTS includes
-g as well now and is not overriden if it was already declared in the
environment. Also, $CFLAGS is appended to rather than reset, so that if
there was already a $CFLAGS environment variable, it's appended to. Some
more variables are also made overridable through the environment. Renamed
$bin to $bindir which is the name commonly used for this.

This is part of the Cogito Makefile changes port.

Signed-off-by: Petr Baudis <pasky@ucw.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Petr Baudis 2005-07-29 17:48:26 +02:00 committed by Junio C Hamano
parent 4d1f119033
commit 5bdac8b326
1 changed files with 39 additions and 19 deletions
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58
Makefile
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@ -1,33 +1,53 @@
# -DCOLLISION_CHECK if you believe that SHA1's
# Define MOZILLA_SHA1 environment variable when running make to make use of
# a bundled SHA1 routine coming from Mozilla. It is GPL'd and should be fast
# on non-x86 architectures (e.g. PowerPC), while the OpenSSL version (default
# choice) has very fast version optimized for i586.
#
# Define NO_OPENSSL environment variable if you do not have OpenSSL. You will
# miss out git-rev-list --merge-order. This also implies MOZILLA_SHA1.
#
# Define PPC_SHA1 environment variable when running make to make use of
# a bundled SHA1 routine optimized for PowerPC.
# Define COLLISION_CHECK below if you believe that SHA1's
# 1461501637330902918203684832716283019655932542976 hashes do not give you
# enough guarantees about no collisions between objects ever hapenning.
#
# -DUSE_NSEC if you want git to care about sub-second file mtimes and ctimes.
# -DUSE_STDEV if you want git to care about st_dev changing
#
# Note that you need some new glibc (at least >2.2.4) for this, and it will
# BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely randomly
# break unless your underlying filesystem supports those sub-second times
# (my ext3 doesn't).
# sufficient guarantee that no collisions between objects will ever happen.
# DEFINES += -DCOLLISION_CHECK
# Define USE_NSEC below if you want git to care about sub-second file mtimes
# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
# randomly break unless your underlying filesystem supports those sub-second
# times (my ext3 doesn't).
# DEFINES += -DUSE_NSEC
# Define USE_STDEV below if you want git to care about the underlying device
# change being considered an inode change from the update-cache perspective.
# DEFINES += -DUSE_STDEV
GIT_VERSION=0.99.2
COPTS=-O2
CFLAGS=-g $(COPTS) -Wall
COPTS?=-g -O2
CFLAGS+=$(COPTS) -Wall $(DEFINES)
prefix=$(HOME)
bin=$(prefix)/bin
bindir=$(prefix)/bin
# dest=
CC=gcc
AR=ar
INSTALL=install
RPMBUILD=rpmbuild
CC?=gcc
AR?=ar
INSTALL?=install
RPMBUILD?=rpmbuild
#
# sparse is architecture-neutral, which means that we need to tell it
# explicitly what architecture to check for. Fix this up for yours..
#
SPARSE_FLAGS=-D__BIG_ENDIAN__ -D__powerpc__
SPARSE_FLAGS?=-D__BIG_ENDIAN__ -D__powerpc__
SCRIPTS=git git-apply-patch-script git-merge-one-file-script git-prune-script \
git-pull-script git-tag-script git-resolve-script git-whatchanged \
@ -57,7 +77,7 @@ PROG= git-update-cache git-diff-files git-init-db git-write-tree \
all: $(PROG)
install: $(PROG) $(SCRIPTS)
$(INSTALL) -m755 -d $(dest)$(bin)
$(INSTALL) -m755 -d $(dest)$(bindir)
$(INSTALL) $(PROG) $(SCRIPTS) $(dest)$(bin)
LIB_OBJS=read-cache.o sha1_file.o usage.o object.o commit.o tree.o blob.o \