编译ncurses --disable-database 为什么“_nc_fallback”未定义

Question

./configure --prefix=$TMUXTARGET --without-database --with-fallbacks=xterm-256color,vt100 --without-xterm-new --disable-home-terminfo --with-termlib --enable-termcap --disable-database

In [205]: !make V=1
cd man && make DESTDIR="" RPATH_LIST="/home/qgb/work/tmux-static/local/lib" all
make[1]: Entering directory '/home/qgb/work/tmux-static/ncurses-6.2/man'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/qgb/work/tmux-static/ncurses-6.2/man'
cd include && make DESTDIR="" RPATH_LIST="/home/qgb/work/tmux-static/local/lib" all
make[1]: Entering directory '/home/qgb/work/tmux-static/ncurses-6.2/include'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/qgb/work/tmux-static/ncurses-6.2/include'
cd ncurses && make DESTDIR="" RPATH_LIST="/home/qgb/work/tmux-static/local/lib" all
make[1]: Entering directory '/home/qgb/work/tmux-static/ncurses-6.2/ncurses'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/qgb/work/tmux-static/ncurses-6.2/ncurses'
cd progs && make DESTDIR="" RPATH_LIST="/home/qgb/work/tmux-static/local/lib" all
make[1]: Entering directory '/home/qgb/work/tmux-static/ncurses-6.2/progs'
gcc ../objects/infocmp.o ../objects/dump_entry.o -L../lib  -DHAVE_CONFIG_H -I../progs -I. -I../include -D_DEFAULT_SOURCE -D_XOPEN_SOURCE=600 -DNDEBUG -O2 --param max-inline-insns-single=1200 -L../lib  -lncurses -ltinfo    -o infocmp
../lib/libtinfo.a(lib_setup.o): In function `_nc_setupterm':
lib_setup.c:(.text+0x924): undefined reference to `_nc_fallback'
collect2: error: ld returned 1 exit status
Makefile:284: recipe for target 'infocmp' failed
make[1]: *** [infocmp] Error 1
make[1]: Leaving directory '/home/qgb/work/tmux-static/ncurses-6.2/progs'
Makefile:118: recipe for target 'all' failed
make: *** [all] Error 2

如何在没有 terminfo 的情况下编译 ncurses

我想构建在 Android shell 上运行的静态应用程序，但没有 terminfo

正常构建 ncurses 会出错

can't find terminfo 

Answer 1

问题中的示例不完整，因为它没有显示构建

ncurses/fallback.c

文件失败。例如，如果创建了一个空文件，则再次运行“make”将不起作用（即，空源文件产生空目标文件）。

--with-fallbacks

选项假设您有

• infocmp 程序
• terminfo 数据库

INSTALL

（在ncurses源代码中）

CONFIGURING FALLBACK ENTRIES

部分详细解释了这一点。如果您在不具备这两种功能的系统上构建 ncurses，并且想要使用后备功能，则必须执行以下操作：

• 构建不带回退功能的 ncurses，将其安装到临时目录，并且
• 重建 ncurses（包括重新配置），使用第一次构建中的 infocmp 和终端数据库来生成回退功能所需的源。