Unix ベースのアプリのビルド プロセスを簡素化するツールを使用しています。自動的に行うことの 1 つは、「./configure」を実行する前に「autoreconf -i」を実行することです。ただし、 OSX (Lion) でexpatライブラリをビルドしようとすると、ビルドは失敗します。
$ tar xfz expat-2.0.1.tar.gz; cd expat-2.0.1
$ autoreconf -i
glibtoolize: putting auxiliary files in AC_CONFIG_AUX_DIR, `conftools'.
glibtoolize: copying file `conftools/ltmain.sh'
glibtoolize: You should add the contents of the following files to `aclocal.m4':
glibtoolize: `/usr/bin/../share/aclocal/libtool.m4'
glibtoolize: `/usr/bin/../share/aclocal/ltoptions.m4'
glibtoolize: `/usr/bin/../share/aclocal/ltversion.m4'
glibtoolize: `/usr/bin/../share/aclocal/ltsugar.m4'
glibtoolize: `/usr/bin/../share/aclocal/lt~obsolete.m4'
glibtoolize: Consider adding `AC_CONFIG_MACRO_DIR([m4])' to configure.in and
glibtoolize: rerunning glibtoolize, to keep the correct libtool macros in-tree.
glibtoolize: Consider adding `-I m4' to ACLOCAL_AMFLAGS in Makefile.am.
$ ./configure
(Lots of output here)
configure: creating ./config.status
config.status: creating Makefile
config.status: WARNING: Makefile.in seems to ignore the --datarootdir setting
config.status: creating expat_config.h
$ make
bin/sh ./libtool --silent --mode=compile gcc -std=gnu99 -I./lib -I. -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H -o lib/xmlparse.lo -c lib/xmlparse.c
./libtool: line 473: CDPATH: command not found
./libtool: line 1297: func_opt_split: command not found
libtool: Version mismatch error. This is libtool 2.2.10, but the
libtool: definition of this LT_INIT comes from an older release.
libtool: You should recreate aclocal.m4 with macros from libtool 2.2.10
libtool: and run autoconf again.
一方、最初に autoreconf を実行しないと、うまくビルドできません:
$ cd ..; rm -r expat-2.0.1; tar xfz expat-2.0.1.tar.gz; cd expat-2.0.1
$ ./configure
(Lots of output here)
configure: creating ./config.status
config.status: creating Makefile
config.status: creating expat_config.h
$ make
/bin/sh ./libtool --silent --mode=compile gcc -I./lib -I. -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H -o lib/xmlparse.lo -c lib/xmlparse.c
/bin/sh ./libtool --silent --mode=compile gcc -I./lib -I. -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H -o lib/xmltok.lo -c lib/xmltok.c
/bin/sh ./libtool --silent --mode=compile gcc -I./lib -I. -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H -o lib/xmlrole.lo -c lib/xmlrole.c
/bin/sh ./libtool --silent --mode=link gcc -I./lib -I. -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H -no-undefined -version-info 6:2:5 -rpath /usr/local/lib -o libexpat.la lib/xmlparse.lo lib/xmltok.lo lib/xmlrole.lo
gcc -I./lib -I. -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H -o xmlwf/xmlwf.o -c xmlwf/xmlwf.c
gcc -I./lib -I. -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H -o xmlwf/xmlfile.o -c xmlwf/xmlfile.c
gcc -I./lib -I. -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H -o xmlwf/codepage.o -c xmlwf/codepage.c
gcc -I./lib -I. -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H -o xmlwf/unixfilemap.o -c xmlwf/unixfilemap.c
/bin/sh ./libtool --silent --mode=link gcc -I./lib -I. -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H -o xmlwf/xmlwf xmlwf/xmlwf.o xmlwf/xmlfile.o xmlwf/codepage.o xmlwf/unixfilemap.o libexpat.la
「autoreconf -i」は何をしているのですか? なぜビルドが失敗するのですか?