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set(PUTTY_GSSAPI DYNAMIC
CACHE STRING "Build PuTTY with dynamically or statically linked \
Kerberos / GSSAPI support, if possible")
set_property(CACHE PUTTY_GSSAPI
PROPERTY STRINGS DYNAMIC STATIC OFF)
include(CheckIncludeFile)
include(CheckLibraryExists)
include(CheckSymbolExists)
include(CheckCSourceCompiles)
include(GNUInstallDirs)
set(CMAKE_REQUIRED_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
-D_DEFAULT_SOURCE -D_GNU_SOURCE)
check_include_file(sys/auxv.h HAVE_SYS_AUXV_H)
check_include_file(asm/hwcap.h HAVE_ASM_HWCAP_H)
check_include_file(sys/sysctl.h HAVE_SYS_SYSCTL_H)
check_include_file(sys/types.h HAVE_SYS_TYPES_H)
check_include_file(glob.h HAVE_GLOB_H)
check_include_file(utmp.h HAVE_UTMP_H)
check_include_file(utmpx.h HAVE_UTMPX_H)
check_symbol_exists(futimes "sys/time.h" HAVE_FUTIMES)
check_symbol_exists(getaddrinfo "sys/types.h;sys/socket.h;netdb.h"
HAVE_GETADDRINFO)
check_symbol_exists(posix_openpt "stdlib.h;fcntl.h" HAVE_POSIX_OPENPT)
check_symbol_exists(ptsname "stdlib.h" HAVE_PTSNAME)
check_symbol_exists(setresuid "unistd.h" HAVE_SETRESUID)
check_symbol_exists(setresgid "unistd.h" HAVE_SETRESGID)
check_symbol_exists(strsignal "string.h" HAVE_STRSIGNAL)
check_symbol_exists(updwtmpx "utmpx.h" HAVE_UPDWTMPX)
check_symbol_exists(fstatat "sys/types.h;sys/stat.h;unistd.h" HAVE_FSTATAT)
check_symbol_exists(dirfd "sys/types.h;dirent.h" HAVE_DIRFD)
check_symbol_exists(setpwent "sys/types.h;pwd.h" HAVE_SETPWENT)
check_symbol_exists(endpwent "sys/types.h;pwd.h" HAVE_ENDPWENT)
check_symbol_exists(getauxval "sys/auxv.h" HAVE_GETAUXVAL)
check_symbol_exists(elf_aux_info "sys/auxv.h" HAVE_ELF_AUX_INFO)
check_symbol_exists(sysctlbyname "sys/types.h;sys/sysctl.h" HAVE_SYSCTLBYNAME)
check_symbol_exists(CLOCK_MONOTONIC "time.h" HAVE_CLOCK_MONOTONIC)
check_symbol_exists(clock_gettime "time.h" HAVE_CLOCK_GETTIME)
check_c_source_compiles("
#define _GNU_SOURCE
#include <features.h>
#include <sys/socket.h>
int main(int argc, char **argv) {
struct ucred cr;
socklen_t crlen = sizeof(cr);
return getsockopt(0, SOL_SOCKET, SO_PEERCRED, &cr, &crlen) +
cr.pid + cr.uid + cr.gid;
}" HAVE_SO_PEERCRED)
if(HAVE_GETADDRINFO AND PUTTY_IPV6)
set(NO_IPV6 OFF)
else()
set(NO_IPV6 ON)
endif()
if(HAVE_UTMPX_H)
set(OMIT_UTMP OFF)
else()
set(OMIT_UTMP ON)
endif()
include(cmake/gtk.cmake)
if(GTK_FOUND)
# See if we have X11 available. This requires libX11 itself, and also
# the GDK integration to X11.
find_package(X11)
function(check_x11)
list(APPEND CMAKE_REQUIRED_INCLUDES ${GTK_INCLUDE_DIRS})
check_include_file(gdk/gdkx.h HAVE_GDK_GDKX_H)
if(X11_FOUND AND HAVE_GDK_GDKX_H)
set(NOT_X_WINDOWS OFF PARENT_SCOPE)
else()
set(NOT_X_WINDOWS ON PARENT_SCOPE)
endif()
endfunction()
check_x11()
endif()
include_directories(${CMAKE_SOURCE_DIR}/charset ${GTK_INCLUDE_DIRS} ${X11_INCLUDE_DIR})
link_directories(${GTK_LIBRARY_DIRS})
function(add_optional_system_lib library testfn)
check_library_exists(${library} ${testfn} "" HAVE_LIB${library})
if (HAVE_LIB${library})
set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES};-l${library})
link_libraries(-l${library})
endif()
endfunction()
add_optional_system_lib(m pow)
add_optional_system_lib(rt clock_gettime)
add_optional_system_lib(xnet socket)
set(extra_dirs charset)
if(PUTTY_GSSAPI STREQUAL DYNAMIC)
add_optional_system_lib(dl dlopen)
if(HAVE_NO_LIBdl)
message(WARNING
"Could not find libdl -- cannot provide dynamic GSSAPI support")
set(NO_GSSAPI ON)
endif()
endif()
if(PUTTY_GSSAPI STREQUAL STATIC)
set(KRB5_CFLAGS)
set(KRB5_LDFLAGS)
# First try using pkg-config
find_package(PkgConfig)
pkg_check_modules(KRB5 krb5-gssapi)
# Failing that, try the dedicated krb5-config
if(NOT KRB5_FOUND)
find_program(KRB5_CONFIG krb5-config)
if(KRB5_CONFIG)
execute_process(COMMAND ${KRB5_CONFIG} --cflags gssapi
OUTPUT_VARIABLE krb5_config_cflags
OUTPUT_STRIP_TRAILING_WHITESPACE
RESULT_VARIABLE krb5_config_cflags_result)
execute_process(COMMAND ${KRB5_CONFIG} --libs gssapi
OUTPUT_VARIABLE krb5_config_libs
OUTPUT_STRIP_TRAILING_WHITESPACE
RESULT_VARIABLE krb5_config_libs_result)
if(krb5_config_cflags_result EQUAL 0 AND krb5_config_libs_result EQUAL 0)
set(KRB5_INCLUDE_DIRS)
set(KRB5_LIBRARY_DIRS)
set(KRB5_LIBRARIES)
# We can safely put krb5-config's cflags directly into cmake's
# cflags, without bothering to extract the include directories.
set(KRB5_CFLAGS ${krb5_config_cflags})
# But krb5-config --libs isn't so simple. It will actually
# deliver a mix of libraries and other linker options. We have
# to separate them for cmake purposes, because if we pass the
# whole lot to add_link_options then they'll appear too early
# in the command line (so that by the time our own code refers
# to GSSAPI functions it'll be too late to search these
# libraries for them), and if we pass the whole lot to
# link_libraries then it'll get confused about options that
# aren't libraries.
separate_arguments(krb5_config_libs NATIVE_COMMAND
${krb5_config_libs})
foreach(opt ${krb5_config_libs})
string(REGEX MATCH "^-l" ok ${opt})
if(ok)
list(APPEND KRB5_LIBRARIES ${opt})
continue()
endif()
string(REGEX MATCH "^-L" ok ${opt})
if(ok)
string(REGEX REPLACE "^-L" "" optval ${opt})
list(APPEND KRB5_LIBRARY_DIRS ${optval})
continue()
endif()
list(APPEND KRB5_LDFLAGS ${opt})
endforeach()
message(STATUS "Found Kerberos via krb5-config")
set(KRB5_FOUND YES)
endif()
endif()
endif()
if(KRB5_FOUND)
include_directories(${KRB5_INCLUDE_DIRS})
link_directories(${KRB5_LIBRARY_DIRS})
link_libraries(${KRB5_LIBRARIES})
add_compile_options(${KRB5_CFLAGS})
add_link_options(${KRB5_LDFLAGS})
set(STATIC_GSSAPI ON)
else()
message(WARNING
"Could not find krb5 via pkg-config or krb5-config -- \
cannot provide static GSSAPI support")
set(NO_GSSAPI ON)
endif()
endif()
if(PUTTY_GSSAPI STREQUAL OFF)
set(NO_GSSAPI ON)
endif()
if(STRICT AND (CMAKE_C_COMPILER_ID MATCHES "GNU" OR
CMAKE_C_COMPILER_ID MATCHES "Clang"))
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Werror -Wpointer-arith -Wvla")
endif()
function(installed_program target)
if(CMAKE_VERSION VERSION_LESS 3.14)
# CMake 3.13 and earlier required an explicit install destination.
install(TARGETS ${target} RUNTIME DESTINATION bin)
else()
# 3.14 and above selects a sensible default, which we should avoid
# overriding here so that end users can override it using
# CMAKE_INSTALL_BINDIR.
install(TARGETS ${target})
endif()
if(HAVE_MANPAGE_${target}_1)
install(FILES ${CMAKE_BINARY_DIR}/doc/${target}.1
DESTINATION ${CMAKE_INSTALL_MANDIR}/man1)
else()
message(WARNING "Could not build man page ${target}.1")
endif()
endfunction()
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