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cmake_minimum_required(VERSION 3.10)
project(dash VERSION 0.5.11.5 LANGUAGES C)
include(CheckCSourceCompiles)
include(CheckIncludeFile)
include(CheckLibraryExists)
include(CheckStructHasMember)
include(CheckSymbolExists)
include(CheckTypeSize)
include(FindPkgConfig)
include(GNUInstallDirs)
check_c_source_compiles([[
void t() {}
void a() __attribute__((__alias__("t")));
int main() { a(); return 0; }
]] HAVE_ALIAS_ATTRIBUTE)
option(ENABLE_FNMATCH "Use fnmatch(3) from libc")
option(ENABLE_GLOB "Use glob(3) from libc")
# Checks for header files.
check_include_file("alloca.h" HAVE_ALLOCA_H)
check_include_file("paths.h" HAVE_PATHS_H)
# Check for declarations
check_symbol_exists(_PATH_BSHELL "paths.h" HAVE__PATH_BSHELL)
check_symbol_exists(_PATH_DEVNULL "paths.h" HAVE__PATH_DEVNULL)
check_symbol_exists(_PATH_TTY "paths.h" HAVE__PATH_TTY)
add_compile_definitions(
$<$<NOT:$<BOOL:${HAVE__PATH_BSHELL}>>:_PATH_BSHELL="/bin/sh">
$<$<NOT:$<BOOL:${HAVE__PATH_DEVNULL}>>:_PATH_DEVNULL="/dev/null">
$<$<NOT:$<BOOL:${HAVE__PATH_TTY}>>:_PATH_TTY="/dev/tty">
)
# Some systems lack isblank
check_symbol_exists(isblank "ctype.h" HAVE_DECL_ISBLANK)
# Check for sizes of types
check_type_size("intmax_t" SIZEOF_INTMAX_T)
check_type_size("long long int" SIZEOF_LONG_LONG_INT)
# Select a fallback format string for intmax_t in case we don't find PRIdMAX
set(
INTMAX_FSTR
$<IF:$<EQUAL:${SIZEOF_INTMAX_T},${SIZEOF_LONG_LONG_INT}>,lld,jd>
)
# Check for PRIdMAX and define it to a fallback if not found
check_symbol_exists(PRIdMAX "inttypes.h" HAVE_PRIdMAX)
if(NOT HAVE_PRIdMAX)
add_compile_definitions(PRIdMAX="${INTMAX_FSTR}")
endif()
# Checks for library functions.
check_symbol_exists(bsearch "stdlib.h" HAVE_BSEARCH)
check_symbol_exists(faccessat "unistd.h" HAVE_FACCESSAT)
check_symbol_exists(getpwnam "pwd.h" HAVE_GETPWNAM)
check_symbol_exists(getrlimit "sys/resource.h" HAVE_GETRLIMIT)
check_symbol_exists(isalpha "ctype.h" HAVE_ISALPHA)
check_symbol_exists(killpg "signal.h" HAVE_KILLPG)
check_symbol_exists(memcpy "string.h" HAVE_MEMCPY)
check_symbol_exists(sigsetmask "signal.h" HAVE_SIGSETMASK)
check_symbol_exists(stpcpy "string.h" HAVE_STPCPY)
check_symbol_exists(strchrnul "string.h" HAVE_STRCHRNUL)
check_symbol_exists(strsignal "string.h" HAVE_STRSIGNAL)
check_symbol_exists(strtod "stdlib.h" HAVE_STRTOD)
check_symbol_exists(strtoimax "inttypes.h" HAVE_STRTOIMAX)
check_symbol_exists(strtoumax "inttypes.h" HAVE_STRTOUMAX)
check_symbol_exists(sysconf "unistd.h" HAVE_SYSCONF)
# Check whether it's worth working around FreeBSD PR kern/125009.
# The traditional behavior of access/faccessat is crazy, but
# POSIX.1-2008 explicitly allows those functions to misbehave.
#
# Unaffected kernels:
#
# - all versions of Linux
# - NetBSD sys/kern/vfs_subr.c 1.64, 1997-04-23
# - FreeBSD 9 (r212002), 2010-09-10
# - OpenBSD sys/kern/vfs_subr.c 1.166, 2008-06-09
#
# Also worked around in Debian's libc0.1 2.13-19 when using
# kFreeBSD 8.
option(
ENABLE_TEST_WORKAROUND
"Guard against faccessat(2) that tells root all files are executable"
AUTO
)
if(ENABLE_TEST_WORKAROUND STREQUAL "AUTO" AND HAVE_FACCESSAT)
if(
CMAKE_SYSTEM_NAME STREQUAL "FreeBSD" OR
CMAKE_SYSTEM_NAME STREQUAL "GNU/kFreeBSD"
)
set(ENABLE_TEST_WORKAROUND ON)
endif()
set(
HAVE_TRADITIONAL_FACCESSAT ON CACHE
BOOL "Define if your faccessat tells root all files are executable"
)
endif()
if(ENABLE_FNMATCH)
check_symbol_exists(fnmatch "fnmatch.h" HAVE_FNMATCH)
endif()
if(HAVE_FNMATCH AND ENABLE_GLOB)
check_symbol_exists(glob "glob.h" HAVE_GLOB)
endif()
# Check for klibc signal.
check_symbol_exists(bsd_signal "signal.h" HAVE_BSD_SIGNAL)
if(HAVE_BSD_SIGNAL)
add_compile_definitions(signal=bsd_signal)
endif()
# Check if struct stat has st_mtim.
check_struct_has_member(
"struct stat" "st_mtim.tv_sec" "sys/stat.h" HAVE_ST_MTIM
)
option(WITH_LIBEDIT "Compile with libedit support")
if(WITH_LIBEDIT)
pkg_check_modules(LIBEDIT IMPORTED_TARGET libedit)
if(LIBEDIT_FOUND)
link_libraries(PkgConfig::LIBEDIT)
else()
unset(LIBEDIT_FOUND CACHE)
check_include_file("histedit.h" HAVE_HISTEDIT_H)
check_library_exists(edit history_init /usr/lib LIBEDIT_FOUND)
if(HAVE_HISTEDIT_H AND LIBEDIT_FOUND)
link_libraries(edit)
else()
message(SEND_ERROR "Can't find libedit.")
endif()
set(CMAKE_REQUIRED_LIBRARIES edit)
check_symbol_exists(
_el_fn_sh_complete "histedit.h" HAVE__EL_FN_SH_COMPLETE
)
endif()
else()
add_compile_definitions(SMALL)
endif()
option(WITH_LINENO "Enable LINENO support" ON)
configure_file(config.h.in config.h)
add_subdirectory(src)
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