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patch 8.2.4457: the GPM library can only be linked statically

Problem:    The GPM library can only be linked statically.
Solution:   Make it possible to load the GPM library dynamically. (Damien)
This commit is contained in:
Bram Moolenaar
2022-02-23 18:07:38 +00:00
parent dd2dfb3cb0
commit 33fc4a6307
9 changed files with 101 additions and 8 deletions

View File

@@ -55,7 +55,25 @@ static int selinux_enabled = -1;
#endif
#ifdef FEAT_MOUSE_GPM
# include <gpm.h>
# ifdef DYNAMIC_GPM
# define Gpm_Open (*dll_Gpm_Open)
# define Gpm_Close (*dll_Gpm_Close)
# define Gpm_GetEvent (*dll_Gpm_GetEvent)
# define gpm_flag (dll_gpm_flag != NULL ? *dll_gpm_flag : 0)
# define gpm_fd (dll_gpm_fd != NULL ? *dll_gpm_fd : -1)
static int (*dll_Gpm_Open) (Gpm_Connect *, int);
static int (*dll_Gpm_Close) (void);
static int (*dll_Gpm_GetEvent) (Gpm_Event *);
static int *dll_gpm_flag;
static int *dll_gpm_fd;
static void *libgpm_hinst;
# endif
// <linux/keyboard.h> contains defines conflicting with "keymap.h",
// I just copied relevant defines here. A cleaner solution would be to put gpm
// code into separate file and include there linux/keyboard.h
@@ -6446,7 +6464,7 @@ select_eintr:
}
# endif
# ifdef FEAT_MOUSE_GPM
if (ret > 0 && gpm_flag && check_for_gpm != NULL && gpm_fd >= 0)
if (ret > 0 && check_for_gpm != NULL && gpm_flag && gpm_fd >= 0)
{
if (FD_ISSET(gpm_fd, &efds))
gpm_close();
@@ -7172,6 +7190,49 @@ mch_rename(const char *src, const char *dest)
#endif // !HAVE_RENAME
#if defined(FEAT_MOUSE_GPM) || defined(PROTO)
# if defined(DYNAMIC_GPM) || defined(PROTO)
/*
* Initialize Gpm's symbols for dynamic linking.
* Must be called only if libgpm_hinst is NULL.
*/
static int
load_libgpm(void)
{
libgpm_hinst = dlopen("libgpm.so", RTLD_LAZY|RTLD_GLOBAL);
if (libgpm_hinst == NULL)
{
if (p_verbose > 0)
smsg_attr(HL_ATTR(HLF_W),
_("Could not load gpm library: %s"), dlerror());
return FAIL;
}
if (
(dll_Gpm_Open = dlsym(libgpm_hinst, "Gpm_Open")) == NULL
|| (dll_Gpm_Close = dlsym(libgpm_hinst, "Gpm_Close")) == NULL
|| (dll_Gpm_GetEvent = dlsym(libgpm_hinst, "Gpm_GetEvent")) == NULL
|| (dll_gpm_flag = dlsym(libgpm_hinst, "gpm_flag")) == NULL
|| (dll_gpm_fd = dlsym(libgpm_hinst, "gpm_fd")) == NULL
)
{
semsg(_(e_could_not_load_library_str_str), "gpm", dlerror());
dlclose(libgpm_hinst);
libgpm_hinst = NULL;
dll_gpm_flag = NULL;
dll_gpm_fd = NULL;
return FAIL;
}
return OK;
}
int
gpm_available(void)
{
return libgpm_hinst != NULL || load_libgpm() == OK;
}
# endif // DYNAMIC_GPM
/*
* Initializes connection with gpm (if it isn't already opened)
* Return 1 if succeeded (or connection already opened), 0 if failed
@@ -7181,6 +7242,11 @@ gpm_open(void)
{
static Gpm_Connect gpm_connect; // Must it be kept till closing ?
#ifdef DYNAMIC_GPM
if (!gpm_available())
return 0;
#endif
if (!gpm_flag)
{
gpm_connect.eventMask = (GPM_UP | GPM_DRAG | GPM_DOWN);