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https://git.code.sf.net/p/quake/quakeforge
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bcc5686606
Fuzzy bsearch is useful for finding an entry in a prefix sum array (value is >= ele[0], < ele[1]), and the reentrant version is good when data needs to be passed to the compare function. Adapted from the code used in pr_resolve.
122 lines
2.9 KiB
Text
122 lines
2.9 KiB
Text
dnl ==================================================================
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dnl Checks for library functions.
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dnl ==================================================================
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AC_FUNC_ALLOCA
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AC_FUNC_MEMCMP
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AC_FUNC_MMAP
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AC_TYPE_SIGNAL
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AC_FUNC_VPRINTF
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AC_CHECK_FUNCS(
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access _access bsearch_r connect dlopen execvp fcntl ftime _ftime \
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getaddrinfo \
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gethostbyname gethostname getnameinfo getpagesize gettimeofday getuid \
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getwd ioctl mkdir _mkdir mprotect putenv qsort_r select sigaction \
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snprintf _snprintf socket stat strcasestr strerror strerror_r strndup \
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strnlen \
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strsep strstr vsnprintf _vsnprintf wait
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)
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AC_FUNC_VA_COPY
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AC_FUNC__VA_COPY
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AH_VERBATIM([DEFINE_VA_COPY],
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[#ifndef HAVE_VA_COPY
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# ifdef HAVE__VA_COPY
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# define va_copy(d,s) __va_copy ((d), (s))
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# else
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# define va_copy(d,s) memcpy (&(d), &(s), sizeof (va_list))
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# endif
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#endif])
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DL_LIBS=""
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if test "x$ac_cv_func_dlopen" != "xyes"; then
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AC_CHECK_LIB(dl, dlopen,
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AC_DEFINE(HAVE_DLOPEN, 1, [Define if you have the dlopen function.])
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DL_LIBS="-ldl"
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)
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fi
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AC_SUBST(DL_LIBS)
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if test "x$DL_LIBS" != "x"; then
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AC_MSG_CHECKING([for RTLD_NOW])
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AC_TRY_COMPILE(
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[#include <dlfcn.h>],
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[int foo = RTLD_NOW],
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AC_DEFINE(HAVE_RTLD_NOW, 1, [Define if you have RTLD_NOW.])
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AC_MSG_RESULT(yes),
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AC_MSG_RESULT(no)
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)
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AC_MSG_CHECKING([for RTLD_DEEPBIND])
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AC_TRY_COMPILE(
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[#include <dlfcn.h>],
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[int foo = RTLD_DEEPBIND],
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AC_DEFINE(HAVE_RTLD_DEEPBIND, 1, [Define if you have RTLD_DEEPBIND.])
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AC_MSG_RESULT(yes),
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AC_MSG_RESULT(no)
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)
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fi
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dnl Checks for stricmp/strcasecmp
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#AC_CHECK_FUNC(strcasecmp,
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# ,
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# AC_CHECK_FUNC(stricmp,
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# AC_DEFINE(strcasecmp, stricmp)
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# )
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#)
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AC_CHECK_FUNC(strcasecmp, strcasecmp=yes, strcasecmp=no)
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if test "x$strcasecmp" = xno; then
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AC_CHECK_FUNC(stricmp,
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AC_DEFINE(strcasecmp, stricmp, [Define strcasecmp as stricmp if you have one but not the other]),
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AC_MSG_ERROR([Neither stricmp nor strcasecmp found])
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)
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fi
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dnl Check for vsnprintf
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if test "x$ac_cv_func_vsnprintf" = "xno" -a \
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"x$ac_cv_func__vsnprintf" = "xno"; then
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dnl libdb may have this
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AC_CHECK_LIB(db,vsnprintf)
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fi
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AC_CHECK_FUNCS(usleep)
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AC_MSG_CHECKING(for fnmatch)
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AC_TRY_LINK(
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[],
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[fnmatch();],
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BUILD_FNMATCH=no
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AC_MSG_RESULT(yes),
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BUILD_FNMATCH=yes
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AC_MSG_RESULT(no)
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)
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AM_CONDITIONAL(BUILD_FNMATCH, test "x$BUILD_FNMATCH" = "xyes")
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AC_MSG_CHECKING(for opendir)
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AC_TRY_LINK(
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[],
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[opendir();],
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BUILD_DIRENT=no
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AC_MSG_RESULT(yes),
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BUILD_DIRENT=yes
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AC_MSG_RESULT(no)
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)
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AM_CONDITIONAL(BUILD_DIRENT, test "x$BUILD_DIRENT" = "xyes")
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AC_MSG_CHECKING(for getopt_long)
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AC_TRY_LINK(
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[],
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[getopt_long();],
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BUILD_GETOPT=no
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AC_MSG_RESULT(yes),
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BUILD_GETOPT=yes
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AC_MSG_RESULT(no)
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)
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AM_CONDITIONAL(BUILD_GETOPT, test "x$BUILD_GETOPT" = "xyes")
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AC_MSG_CHECKING(for log2f)
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
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[[#include <math.h>]], [float (*foo)(float) = log2f;])],
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AC_DEFINE(HAVE_LOG2F, 1, [Define if you have log2f.])
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[HAVE_LOG2F=yes],
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[HAVE_LOG2F=no])
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AC_MSG_RESULT($HAVE_LOG2F)
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