Ticket #3628: mc-3628-02-restructure-with-screen-ncurses-m4.patch

File mc-3628-02-restructure-with-screen-ncurses-m4.patch, 12.0 KB (added by and, 8 years ago)

  • m4.include/mc-with-screen-ncurses.m4 

    From dbce71d448ab449b2945f6e3a329a849f76f1f2b Mon Sep 17 00:00:00 2001
From: Andreas Mohr <and@gmx.li>
Date: Sun, 10 Apr 2016 15:51:58 +0000
Subject: [PATCH] Restructure with-screen ncurses m4 logic

Search order:
1) system path   (adjust by --with-ncurses-libdir=<DIR>, --with-ncurses-includedir=<DIR>)
2) pkg-config    (adjust by NCURSES_LIBS, NCURSES_CFLAGS)

Preference:
ncursesw > ncurses

more document at source code

Signed-off-by: Andreas Mohr <and@gmx.li>
---
 m4.include/mc-with-screen-ncurses.m4 | 284 ++++++++++++-----------------------
 1 file changed, 95 insertions(+), 189 deletions(-)

diff --git a/m4.include/mc-with-screen-ncurses.m4 b/m4.include/mc-with-screen-ncurses.m4
index c3b6086..af14491 100644
    a b  
    1 dnl check for ncurses in user supplied path 
    2 AC_DEFUN([mc_CHECK_NCURSES_BY_PATH], [ 
    3  
    4     ac_ncurses_inc_path=[$1] 
    5     ac_ncurses_lib_path=[$2] 
    6  
    7     if test x"$ac_ncurses_inc_path" != x; then 
    8         ac_ncurses_inc_path="-I"$ac_ncurses_inc_path 
    9     fi 
    10  
    11     if test x"$ac_ncurses_lib_path" != x; then 
    12         ac_ncurses_lib_path="-L"$ac_ncurses_lib_path 
    13     fi 
    14  
    15     saved_CPPFLAGS="$CPPFLAGS" 
    16     saved_LDFLAGS="$LDFLAGS" 
    17     CPPFLAGS="$CPPFLAGS $ac_ncurses_inc_path" 
    18     LDFLAGS="$LDFLAGS $ac_ncurses_lib_path" 
    19  
    20     dnl Check for the headers 
    21     dnl Both headers should be in the same directory 
    22     dnl AIX term.h is unusable for mc 
    23     AC_MSG_CHECKING([for ncurses/ncurses.h and ncurses/term.h]) 
    24     AC_PREPROC_IFELSE( 
    25         [ 
    26             AC_LANG_PROGRAM([[#include <ncurses/ncurses.h> 
    27                               #include <ncurses/term.h> 
    28                             ]],[[return 0;]]) 
    29         ], 
    30         [ 
    31             AC_MSG_RESULT(yes) 
    32             if test x"$ac_ncurses_inc_path" = x; then 
    33                 ac_ncurses_inc_path="-I/usr/include" 
    34             fi 
    35             if test x"$ac_ncurses_lib_path" = x; then 
    36               ac_ncurses_lib_path="-L/usr/lib" 
    37             fi 
    38             found_ncurses=yes 
    39             AC_DEFINE(HAVE_NCURSES_NCURSES_H, 1, 
    40                       [Define to 1 if you have the <ncurses/ncurses.h> header file.]) 
    41             AC_DEFINE(HAVE_NCURSES_TERM_H, 1, 
    42                       [Define to 1 if you have the <ncurses/term.h> header file.]) 
    43         ], 
    44         [ 
    45             AC_MSG_RESULT(no) 
    46             found_ncurses=no 
    47             error_msg_ncurses="ncurses header not found" 
    48         ], 
    49     ) 
    50  
    51     if test x"$found_ncurses" = x"yes"; then 
    52         screen_type=ncurses 
    53         screen_msg="NCurses" 
    54  
    55         AC_DEFINE(HAVE_NCURSES, 1, 
    56                   [Define to use ncurses library for screen management]) 
    57  
    58         MCLIBS="$MCLIBS $ac_ncurses_lib_path" 
    59     else 
    60         CPPFLAGS="$saved_CPPFLAGS" 
    61         LDFLAGS="$saved_LDPFLAGS" 
    62         AC_MSG_ERROR([$error_msg_ncurses]) 
    63     fi 
    64 ]) 
    65  
    661dnl 
    672dnl Use the ncurses library.  It can only be requested explicitly, 
    683dnl so just fail if anything goes wrong. 
    694dnl 
    70 dnl If ncurses exports the ESCDELAY variable it should be set to 0 
    71 dnl or you'll have to press Esc three times to dismiss a dialog box. 
     5dnl Search order: 
     6dnl 1) system path   (adjust by --with-ncurses-libdir=<DIR>, --with-ncurses-includedir=<DIR>) 
     7dnl 2) pkg-config    (adjust by NCURSES_LIBS, NCURSES_CFLAGS) 
    728dnl 
    73 AC_DEFUN([mc_WITH_NCURSES], [ 
    74     dnl has_colors() is specific to ncurses, it's not in the old curses 
    75     save_LIBS="$LIBS" 
    76     ncursesw_found= 
    77  
    78     dnl get the user supplied include path 
    79     AC_ARG_WITH([ncurses-includes], 
    80         AS_HELP_STRING([--with-ncurses-includes=@<:@DIR@:>@], 
    81             [set path to ncurses includes @<:@default=/usr/include@:>@; make sense only if --with-screen=ncurses; for /usr/local/include/ncurses specify /usr/local/include] 
    82         ), 
    83         [ac_ncurses_inc_path="$withval"], 
    84         [ac_ncurses_inc_path=""] 
    85     ) 
    86  
    87     dnl get the user supplied lib path 
    88     AC_ARG_WITH([ncurses-libs], 
    89         AS_HELP_STRING([--with-ncurses-libs=@<:@DIR@:>@], 
    90             [set path to ncurses library @<:@default=/usr/lib@:>@; make sense only if --with-screen=ncurses] 
    91         ), 
    92         [ac_ncurses_lib_path="$withval"], 
    93         [ac_ncurses_lib_path=""] 
    94     ) 
    95  
    96     dnl we need at least the inc path, the lib may be in a std location 
    97     if test x"$ac_ncurses_inc_path" != x; then 
    98         dnl check the user supplied location 
    99         mc_CHECK_NCURSES_BY_PATH([$ac_ncurses_inc_path],[$ac_ncurses_lib_path]) 
    100  
    101         LIBS= 
    102         AC_SEARCH_LIBS([has_colors], [ncurses], [MCLIBS="$MCLIBS $LIBS"],  
    103                        [AC_MSG_ERROR([Cannot find ncurses library])]) 
    104  
    105         screen_type=ncurses 
    106         screen_msg="NCurses" 
    107         AC_DEFINE(USE_NCURSES, 1,  
    108                   [Define to use ncurses for screen management]) 
    109     else 
    110         LIBS= 
    111         AC_SEARCH_LIBS([addwstr], [ncursesw ncurses curses], [MCLIBS="$MCLIBS $LIBS";ncursesw_found=yes], 
    112                        [AC_MSG_WARN([Cannot find ncurses library, that support wide characters])]) 
    113  
    114         if test x"$ncursesw_found" = "x"; then 
    115             LIBS= 
    116             AC_SEARCH_LIBS([has_colors], [ncurses curses], [MCLIBS="$MCLIBS $LIBS"],  
    117                            [AC_MSG_ERROR([Cannot find ncurses library])]) 
    118         fi 
    119  
    120         dnl Check the header 
    121         ncurses_h_found= 
    122         AC_CHECK_HEADERS([ncursesw/curses.h ncurses/curses.h ncurses.h curses.h],  
    123                          [ncurses_h_found=yes; break]) 
    124  
    125         if test x"$ncurses_h_found" = "x"; then 
    126             AC_MSG_ERROR([Cannot find ncurses header file]) 
    127         fi 
    128  
    129         screen_type=ncurses 
    130         screen_msg="NCurses" 
    131         AC_DEFINE(USE_NCURSES, 1,  
    132                   [Define to use ncurses for screen management]) 
    133     fi 
    134  
    135     dnl check for ESCDELAY 
    136     AC_CACHE_CHECK([for ESCDELAY variable], 
    137                    [mc_cv_ncurses_escdelay], 
    138                    [AC_TRY_LINK([], [ 
    139                         extern int ESCDELAY; 
    140                         ESCDELAY = 0; 
    141                         ], 
    142                         [mc_cv_ncurses_escdelay=yes], 
    143                         [mc_cv_ncurses_escdelay=no]) 
    144     ]) 
    145     if test x"$mc_cv_ncurses_escdelay" = xyes; then 
    146         AC_DEFINE(HAVE_ESCDELAY, 1,  
    147                   [Define if ncurses has ESCDELAY variable]) 
    148     fi 
    149  
    150     dnl check for resizeterm 
    151     AC_CHECK_FUNCS(resizeterm) 
    152     LIBS="$save_LIBS" 
    153 ]) 
    154  
     9dnl Preference: 
     10dnl ncursesw > ncurses 
    15511dnl 
    156 dnl Use the ncursesw library.  It can only be requested explicitly, 
    157 dnl so just fail if anything goes wrong. 
     12dnl Rules: 
     13dnl LIBS can be prepended 
     14dnl CFLAGS can be appended (compiler optimizations and directives look at the last options) 
     15dnl CPPFLAGS can be prepended (header search paths options look at the first path) 
    15816dnl 
    159 dnl If ncursesw exports the ESCDELAY variable it should be set to 0 
    160 dnl or you'll have to press Esc three times to dismiss a dialog box. 
    161 dnl 
    162  
    163 AC_DEFUN([mc_WITH_NCURSESW], [ 
    164     dnl has_colors() is specific to ncurses, it's not in the old curses 
     17AC_DEFUN([mc_WITH_NCURSES], [ 
    16518    save_LIBS="$LIBS" 
    166     LIBS= 
    167     AC_SEARCH_LIBS([has_colors], [ncursesw], [MCLIBS="$MCLIBS $LIBS"], 
    168                    [AC_MSG_ERROR([Cannot find ncursesw library])]) 
    169  
    170     dnl Check the header 
    171     ncurses_h_found= 
    172     AC_CHECK_HEADERS([ncursesw/curses.h], 
    173                      [ncursesw_h_found=yes; break]) 
    174  
    175     if test  x"$ncursesw_h_found" = "x"; then 
    176         AC_MSG_ERROR([Cannot find ncursesw header file]) 
    177     fi 
    178  
    179     screen_type=ncursesw 
    180     screen_msg="NCursesw" 
    181     AC_DEFINE(USE_NCURSESW, 1, 
    182               [Define to use ncursesw for screen management]) 
    183  
    184     AC_CACHE_CHECK([for ESCDELAY variable], 
    185                    [mc_cv_ncursesw_escdelay], 
    186                    [AC_TRY_LINK([], [ 
    187                         extern int ESCDELAY; 
    188                         ESCDELAY = 0; 
    189                         ], 
    190                         [mc_cv_ncursesw_escdelay=yes], 
    191                         [mc_cv_ncursesw_escdelay=no]) 
    192     ]) 
    193     if test x"$mc_cv_ncursesw_escdelay" = xyes; then 
    194         AC_DEFINE(HAVE_ESCDELAY, 1, 
    195                   [Define if ncursesw has ESCDELAY variable]) 
    196     fi 
     19    save_CFLAGS="$CFLAGS" 
     20    save_CPPFLAGS="$CPPFLAGS" 
     21    save_MCLIBS="$MCLIBS" 
     22 
     23    AC_MSG_CHECKING([for specific ncurses-libdir]) 
     24    AC_ARG_WITH([ncurses-libdir], 
     25        [AS_HELP_STRING([--with-ncurses-libdir=@<:@DIR@:>@], [Path to ncurses library files])], 
     26        [AS_IF([test ! -d "$withval"], [AC_MSG_ERROR([ncurses-libdir path "$withval" not found])]) 
     27        LIBS="-L$withval $LIBS" 
     28        LDFLAGS="-L$withval $LIBS" 
     29        MCLIBS="-L$withval $MCLIBS"], 
     30        [with_ncurses_libdir=no]) 
     31    AC_MSG_RESULT([$with_ncurses_libdir]) 
     32 
     33    AC_MSG_CHECKING([for specific ncurses-includedir]) 
     34    AC_ARG_WITH([ncurses-includedir], 
     35        [AS_HELP_STRING([--with-screen-includedir=@<:@DIR@:>@], [Path to screen header files])], 
     36        [AS_IF([test ! -d "$withval"], [AC_MSG_ERROR([ncurses-includedir path "$withval" not found])]) 
     37        CFLAGS="$save_CFLAGS -I$withval"], 
     38        [with_ncurses_includedir=no]) 
     39    AC_MSG_RESULT([$with_ncurses_includedir]) 
     40 
     41    dnl 
     42    dnl Check ncurses library 
     43    dnl 
     44    dnl has_colors is specific to ncurses, it's not in the old curses 
     45    dnl search in default linker path and LDFLAGS -L options 
     46    AC_SEARCH_LIBS([has_colors], [ncursesw ncurses], 
     47        [AS_CASE(["$ac_cv_search_has_colors"], 
     48            ["-lncursesw"], [screen_msg="NCursesw"], 
     49            ["-lncurses"], [screen_msg="NCurses"], 
     50            ["none required"], [screen_msg="NCurses static"], dnl or system native? Who knows 
     51            [AC_MSG_ERROR([Unknown ac_cv_search_has_colors option "$ac_cv_search_has_colors"])])], 
     52        dnl 2) Library not found by system path, try pkg-config 
     53        [PKG_CHECK_MODULES([NCURSES], [ncursesw], 
     54            [LIBS="$NCURSES_LIBS $save_LIBS" 
     55            MCLIBS="$NCURSES_LIBS $save_MCLIBS" 
     56            CFLAGS="$save_CFLAGS $NCURSES_CFLAGS" 
     57            screen_msg="Ncursesw" 
     58            AC_CHECK_FUNC([has_colors], [], dnl Always validate pkg-config result 
     59                [AC_MSG_ERROR([Ncursesw pkg-config insufficient])])], 
     60            [PKG_CHECK_MODULES([NCURSES], [ncurses], 
     61                [LIBS="$NCURSES_LIBS $save_LIBS" 
     62                MCLIBS="$NCURSES_LIBS $save_MCLIBS" 
     63                CFLAGS="$save_CFLAGS $NCURSES_CFLAGS" 
     64                screen_msg="Ncurses" 
     65                AC_CHECK_FUNC([has_colors], [], dnl Always validate pkg-config result 
     66                    [AC_MSG_ERROR([Ncurses pkg-config insufficient])])], 
     67                [AC_MSG_ERROR([Ncurses(w) library not found by system path neither pkg-config])])])]) 
     68 
     69    AC_CHECK_FUNC([addwstr], [], 
     70        [AC_MSG_WARN([Ncurses(w) library found without wide characters support])]) 
     71 
     72    dnl 
     73    dnl Check ncurses header 
     74    dnl 
     75    dnl Set CPPFLAGS to avoid AC_CHECK_HEADERS warning "accepted by the compiler, rejected by the preprocessor!" 
     76    CPPFLAGS="$CFLAGS" 
     77    dnl first match wins, using break 
     78    AC_CHECK_HEADERS([ncursesw/ncurses.h ncursesw/curses.h ncurses/ncurses.h ncurses/curses.h ncurses.h curses.h], 
     79        [ncurses_h_found=yes; break], 
     80        [ncurses_h_found=no]) 
     81 
     82    AS_IF([test x"$ncurses_h_found" != xyes], 
     83        [AC_MSG_ERROR([Ncurses(w) header file not found])]) 
     84 
     85    AC_CHECK_HEADERS([ncursesw/term.h ncurses/term.h term.h], 
     86        [ncurses_term_h_found=yes; break], 
     87        [ncurses_term_h_found=no]) 
     88 
     89    AS_IF([test x"$ncurses_term_h_found" != xyes], 
     90        [AC_MSG_ERROR([Ncurses(w) term.h header file not found])]) 
     91 
     92    dnl If ncurses exports the ESCDELAY variable it should be set to 0 
     93    dnl or you'll have to press Esc three times to dismiss a dialog box. 
     94    AC_CACHE_CHECK([for ESCDELAY variable], [mc_cv_ncurses_escdelay], 
     95        [AC_LINK_IFELSE( 
     96            [AC_LANG_PROGRAM([[extern int ESCDELAY;]],[[ESCDELAY = 0;]])], 
     97            [mc_cv_ncurses_escdelay=yes], [mc_cv_ncurses_escdelay=no])]) 
     98 
     99    AS_IF([test x"$mc_cv_ncurses_escdelay" = xyes], 
     100        [AC_DEFINE([HAVE_ESCDELAY], [1], [Define if ncurses(w) has ESCDELAY variable])]) 
    197101 
    198102    AC_CHECK_FUNCS(resizeterm) 
    199     LIBS="$save_LIBS" 
     103 
     104    AC_DEFINE([HAVE_NCURSES], [1], [Define to use ncurses for screen management]) 
     105    AC_DEFINE_UNQUOTED([NCURSES_LIB_DISPLAYNAME], ["$screen_msg"], [Define ncurses library display name]) 
    200106])