forked from enlightenment/efl
70 lines
1.7 KiB
Plaintext
70 lines
1.7 KiB
Plaintext
dnl Copyright (C) 2010 Vincent Torri <vtorri at univ-evry dot fr>
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dnl That code is public domain and can be freely used or copied.
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dnl Macro that check if shm_open function is available or not.
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dnl Usage: EFL_CHECK_SHM_OPEN([, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
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dnl Call AC_SUBST(EFL_SHM_OPEN_LIBS)
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dnl Define HAVE_SHM_OPEN to 1if shm_open is available
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AC_DEFUN([EFL_CHECK_SHM_OPEN],
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[
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_efl_have_shm_open="no"
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dnl Check is shm_open is in libc
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AC_MSG_CHECKING([for shm_open in libc])
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM(
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[[
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#include <sys/mman.h>
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#include <sys/stat.h> /* For mode constants */
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#include <fcntl.h> /* For O_* constants */
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]],
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[[
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int fd;
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fd = shm_open("/dev/null", O_RDONLY, S_IRWXU | S_IRWXG | S_IRWXO);
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]])],
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[_efl_have_shm_open="yes"],
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[_efl_have_shm_open="no"])
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AC_MSG_RESULT([${_efl_have_shm_open}])
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if test "x$_efl_have_shm_open" = "xno" ; then
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AC_MSG_CHECKING([for shm_open in librt])
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LIBS_save="${LIBS}"
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LIBS="${LIBS} -lrt"
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM(
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[[
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#include <sys/mman.h>
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#include <sys/stat.h> /* For mode constants */
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#include <fcntl.h> /* For O_* constants */
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]],
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[[
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int fd;
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fd = shm_open("/dev/null", O_RDONLY, S_IRWXU | S_IRWXG | S_IRWXO);
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]])],
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[
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EFL_SHM_OPEN_LIBS="-lrt"
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_efl_have_shm_open="yes"],
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[_efl_have_shm_open="no"])
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LIBS="${LIBS_save}"
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AC_MSG_RESULT([${_efl_have_shm_open}])
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fi
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AC_SUBST([EFL_SHM_OPEN_LIBS])
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if test "x$_efl_have_shm_open" = "xyes" ; then
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AC_DEFINE([HAVE_SHM_OPEN], [1], [Define to 1 if you have the `shm_open' function.])
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fi
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AS_IF([test "x$_efl_have_shm_open" = "xyes"], [$1], [$2])
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])
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