diff options
Diffstat (limited to 'build')
58 files changed, 1121 insertions, 0 deletions
diff --git a/build/cc.sh b/build/cc.sh new file mode 100755 index 0000000..45d51ca --- /dev/null +++ b/build/cc.sh @@ -0,0 +1,16 @@ +#!/bin/sh + +# Copyright © Tavian Barnes <tavianator@tavianator.com> +# SPDX-License-Identifier: 0BSD + +# Run the compiler and check if it succeeded + +set -eu + +TMP=$(mktemp) +trap 'rm -f "$TMP"' EXIT + +( + set -x + $XCC $XCPPFLAGS $XCFLAGS $XLDFLAGS "$@" $XLDLIBS -o "$TMP" +) diff --git a/build/config.mk b/build/config.mk new file mode 100644 index 0000000..24873ec --- /dev/null +++ b/build/config.mk @@ -0,0 +1,62 @@ +# Copyright © Tavian Barnes <tavianator@tavianator.com> +# SPDX-License-Identifier: 0BSD + +# Makefile that implements `./configure` + +include build/prelude.mk +include build/exports.mk + +# All configuration steps +config: gen/config.mk gen/config.h +.PHONY: config + +# Makefile fragments generated by `./configure` +MKS := \ + gen/vars.mk \ + gen/flags.mk \ + gen/deps.mk \ + gen/pkgs.mk + +# The main configuration file, which includes the others +gen/config.mk: ${MKS} + ${MSG} "[ GEN] $@" + @printf '# %s\n' "$@" >$@ + @printf 'include %s\n' ${.ALLSRC} >>$@ + ${VCAT} gen/config.mk +.PHONY: gen/config.mk + +# Saves the configurable variables +gen/vars.mk:: + @${MKDIR} ${@D} + ${MSG} "[ GEN] $@" + @printf '# %s\n' "$@" >$@ + @printf 'PREFIX := %s\n' "$$XPREFIX" >>$@ + @printf 'MANDIR := %s\n' "$$XMANDIR" >>$@ + @printf 'OS := %s\n' "$${OS:-$$(uname)}" >>$@ + @printf 'CC := %s\n' "$$XCC" >>$@ + @printf 'INSTALL := %s\n' "$$XINSTALL" >>$@ + @printf 'MKDIR := %s\n' "$$XMKDIR" >>$@ + @printf 'PKG_CONFIG := %s\n' "$$XPKG_CONFIG" >>$@ + @printf 'RM := %s\n' "$$XRM" >>$@ + ${VCAT} $@ + +# Sets the build flags. This depends on vars.mk and uses a recursive make so +# that the default flags can depend on variables like ${OS}. +gen/flags.mk: gen/vars.mk + @+XMAKEFLAGS="$$MAKEFLAGS" ${MAKE} -sf build/flags.mk $@ +.PHONY: gen/flags.mk + +# Check for dependency generation support +gen/deps.mk: gen/flags.mk + @+XMAKEFLAGS="$$MAKEFLAGS" ${MAKE} -sf build/deps.mk $@ +.PHONY: gen/deps.mk + +# Auto-detect dependencies and their build flags +gen/pkgs.mk: gen/flags.mk + @+XMAKEFLAGS="$$MAKEFLAGS" ${MAKE} -sf build/pkgs.mk $@ +.PHONY: gen/pkgs.mk + +# Compile-time feature detection +gen/config.h: gen/config.mk + @+XMAKEFLAGS="$$MAKEFLAGS" ${MAKE} -sf build/header.mk $@ +.PHONY: gen/config.h diff --git a/build/define-if.sh b/build/define-if.sh new file mode 100755 index 0000000..295ead8 --- /dev/null +++ b/build/define-if.sh @@ -0,0 +1,20 @@ +#!/bin/sh + +# Copyright © Tavian Barnes <tavianator@tavianator.com> +# SPDX-License-Identifier: 0BSD + +# Output a C preprocessor definition based on whether a command succeeds + +set -eu + +SLUG="${1#build/}" +SLUG="${SLUG%.c}" +MACRO="BFS_$(printf '%s' "$SLUG" | tr '/a-z-' '_A-Z_')" +shift + +if "$@"; then + printf '#define %s true\n' "$MACRO" +else + printf '#define %s false\n' "$MACRO" + exit 1 +fi diff --git a/build/deps.mk b/build/deps.mk new file mode 100644 index 0000000..d382f5d --- /dev/null +++ b/build/deps.mk @@ -0,0 +1,18 @@ +# Copyright © Tavian Barnes <tavianator@tavianator.com> +# SPDX-License-Identifier: 0BSD + +# Makefile that generates gen/deps.mk + +include build/prelude.mk +include gen/vars.mk +include gen/flags.mk +include build/exports.mk + +gen/deps.mk:: + ${MSG} "[ GEN] $@" + @printf '# %s\n' "$@" >$@ + @if build/cc.sh -MD -MP -MF /dev/null build/empty.c; then \ + printf '_CPPFLAGS += -MD -MP\n'; \ + fi >>$@ 2>$@.log + ${VCAT} $@ + @printf -- '-include %s\n' ${OBJS:.o=.d} >>$@ diff --git a/build/empty.c b/build/empty.c new file mode 100644 index 0000000..4fa9a5b --- /dev/null +++ b/build/empty.c @@ -0,0 +1,6 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +int main(void) { + return 0; +} diff --git a/build/exports.mk b/build/exports.mk new file mode 100644 index 0000000..913a1aa --- /dev/null +++ b/build/exports.mk @@ -0,0 +1,20 @@ +# Copyright © Tavian Barnes <tavianator@tavianator.com> +# SPDX-License-Identifier: 0BSD + +# Makefile fragment that exports variables used by configuration scripts + +export XPREFIX=${PREFIX} +export XMANDIR=${MANDIR} + +export XCC=${CC} +export XINSTALL=${INSTALL} +export XMKDIR=${MKDIR} +export XPKG_CONFIG=${PKG_CONFIG} +export XRM=${RM} + +export XCPPFLAGS=${_CPPFLAGS} +export XCFLAGS=${_CFLAGS} +export XLDFLAGS=${_LDFLAGS} +export XLDLIBS=${_LDLIBS} + +export XNOLIBS=${NOLIBS} diff --git a/build/flags.mk b/build/flags.mk new file mode 100644 index 0000000..c50b077 --- /dev/null +++ b/build/flags.mk @@ -0,0 +1,115 @@ +# Copyright © Tavian Barnes <tavianator@tavianator.com> +# SPDX-License-Identifier: 0BSD + +# Makefile that generates gen/flags.mk + +include build/prelude.mk +include gen/vars.mk + +# Internal flags +_CPPFLAGS := \ + -Isrc \ + -Igen \ + -D__EXTENSIONS__ \ + -D_ATFILE_SOURCE \ + -D_BSD_SOURCE \ + -D_DARWIN_C_SOURCE \ + -D_DEFAULT_SOURCE \ + -D_GNU_SOURCE \ + -D_POSIX_PTHREAD_SEMANTICS \ + -D_FILE_OFFSET_BITS=64 \ + -D_TIME_BITS=64 + +_CFLAGS := -std=c17 -pthread +_LDFLAGS := +_LDLIBS := + +# Platform-specific system libraries +LDLIBS,DragonFly := -lposix1e +LDLIBS,Linux := -lrt +LDLIBS,NetBSD := -lutil +LDLIBS,SunOS := -lsec -lsocket -lnsl +_LDLIBS += ${LDLIBS,${OS}} + +# Build profiles +_ASAN := ${TRUTHY,${ASAN}} +_LSAN := ${TRUTHY,${LSAN}} +_MSAN := ${TRUTHY,${MSAN}} +_TSAN := ${TRUTHY,${TSAN}} +_UBSAN := ${TRUTHY,${UBSAN}} +_GCOV := ${TRUTHY,${GCOV}} +_LINT := ${TRUTHY,${LINT}} +_RELEASE := ${TRUTHY,${RELEASE}} + +# https://github.com/google/sanitizers/issues/342 +TSAN_CPPFLAGS,y := -DBFS_USE_TARGET_CLONES=0 +_CPPFLAGS += ${TSAN_CPPFLAGS,${_TSAN}} + +ASAN_CFLAGS,y := -fsanitize=address +LSAN_CFLAGS,y := -fsanitize=leak +MSAN_CFLAGS,y := -fsanitize=memory -fsanitize-memory-track-origins +TSAN_CFLAGS,y := -fsanitize=thread +UBSAN_CFLAGS,y := -fsanitize=undefined + +_CFLAGS += ${ASAN_CFLAGS,${_ASAN}} +_CFLAGS += ${LSAN_CFLAGS,${_LSAN}} +_CFLAGS += ${MSAN_CFLAGS,${_MSAN}} +_CFLAGS += ${TSAN_CFLAGS,${_TSAN}} +_CFLAGS += ${UBSAN_CFLAGS,${_UBSAN}} + +SAN_CFLAGS,y := -fno-sanitize-recover=all +INSANE := ${NOT,${_ASAN}${_LSAN}${_MSAN}${_TSAN}${_UBSAN}} +SAN := ${NOT,${INSANE}} +_CFLAGS += ${SAN_CFLAGS,${SAN}} + +# MSAN and TSAN both need all code to be instrumented +YESLIBS := ${NOT,${_MSAN}${_TSAN}} +NOLIBS ?= ${NOT,${YESLIBS}} + +# gcov only intercepts fork()/exec() with -std=gnu* +GCOV_CFLAGS,y := -std=gnu17 --coverage +_CFLAGS += ${GCOV_CFLAGS,${_GCOV}} + +LINT_CPPFLAGS,y := -D_FORTIFY_SOURCE=3 -DBFS_LINT +LINT_CFLAGS,y := -Werror -O2 + +_CPPFLAGS += ${LINT_CPPFLAGS,${_LINT}} +_CFLAGS += ${LINT_CFLAGS,${_LINT}} + +RELEASE_CPPFLAGS,y := -DNDEBUG +RELEASE_CFLAGS,y := -O3 -flto=auto + +_CPPFLAGS += ${RELEASE_CPPFLAGS,${_RELEASE}} +_CFLAGS += ${RELEASE_CFLAGS,${_RELEASE}} + +# Configurable flags +CFLAGS ?= \ + -g \ + -Wall \ + -Wformat=2 \ + -Werror=implicit \ + -Wimplicit-fallthrough \ + -Wmissing-declarations \ + -Wshadow \ + -Wsign-compare \ + -Wstrict-prototypes + +# Add the configurable flags last so they can override ours +_CPPFLAGS += ${CPPFLAGS} ${EXTRA_CPPFLAGS} +_CFLAGS += ${CFLAGS} ${EXTRA_CFLAGS} +_LDFLAGS += ${LDFLAGS} ${EXTRA_LDFLAGS} +# (except LDLIBS, as earlier libs override later ones) +_LDLIBS := ${LDLIBS} ${EXTRA_LDLIBS} ${_LDLIBS} + +include build/exports.mk + +gen/flags.mk:: + ${MSG} "[ GEN] $@" + @printf '# %s\n' "$@" >$@ + @printf '_CPPFLAGS := %s\n' "$$XCPPFLAGS" >>$@ + @printf '_CFLAGS := %s\n' "$$XCFLAGS" >>$@ + @printf '_LDFLAGS := %s\n' "$$XLDFLAGS" >>$@ + @printf '_LDLIBS := %s\n' "$$XLDLIBS" >>$@ + @printf 'NOLIBS := %s\n' "$$XNOLIBS" >>$@ + @test "${OS}-${SAN}" != FreeBSD-y || printf 'POSTLINK = elfctl -e +noaslr $$@\n' >>$@ + ${VCAT} $@ diff --git a/build/has/--st-birthtim.c b/build/has/--st-birthtim.c new file mode 100644 index 0000000..4da621f --- /dev/null +++ b/build/has/--st-birthtim.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <sys/stat.h> + +int main(void) { + struct stat sb = {0}; + return sb.__st_birthtim.tv_sec; +} diff --git a/build/has/acl-get-entry.c b/build/has/acl-get-entry.c new file mode 100644 index 0000000..1e7f473 --- /dev/null +++ b/build/has/acl-get-entry.c @@ -0,0 +1,11 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <sys/types.h> +#include <sys/acl.h> + +int main(void) { + acl_t acl = acl_get_file(".", ACL_TYPE_DEFAULT); + acl_entry_t entry; + return acl_get_entry(acl, ACL_FIRST_ENTRY, &entry); +} diff --git a/build/has/acl-get-file.c b/build/has/acl-get-file.c new file mode 100644 index 0000000..0b76ee2 --- /dev/null +++ b/build/has/acl-get-file.c @@ -0,0 +1,11 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <stddef.h> +#include <sys/types.h> +#include <sys/acl.h> + +int main(void) { + acl_t acl = acl_get_file(".", ACL_TYPE_DEFAULT); + return acl == (acl_t)NULL; +} diff --git a/build/has/acl-get-tag-type.c b/build/has/acl-get-tag-type.c new file mode 100644 index 0000000..67b7d37 --- /dev/null +++ b/build/has/acl-get-tag-type.c @@ -0,0 +1,13 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <string.h> +#include <sys/types.h> +#include <sys/acl.h> + +int main(void) { + acl_entry_t entry; + memset(&entry, 0, sizeof(entry)); + acl_tag_t tag; + return acl_get_tag_type(entry, &tag); +} diff --git a/build/has/acl-is-trivial-np.c b/build/has/acl-is-trivial-np.c new file mode 100644 index 0000000..9ca9fc7 --- /dev/null +++ b/build/has/acl-is-trivial-np.c @@ -0,0 +1,12 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <sys/types.h> +#include <sys/acl.h> + +int main(void) { + acl_t acl = acl_get_fd(3); + int trivial; + acl_is_trivial_np(acl, &trivial); + return 0; +} diff --git a/build/has/acl-trivial.c b/build/has/acl-trivial.c new file mode 100644 index 0000000..7efc838 --- /dev/null +++ b/build/has/acl-trivial.c @@ -0,0 +1,8 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <sys/acl.h> + +int main(void) { + return acl_trivial("."); +} diff --git a/build/has/aligned-alloc.c b/build/has/aligned-alloc.c new file mode 100644 index 0000000..4460038 --- /dev/null +++ b/build/has/aligned-alloc.c @@ -0,0 +1,8 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <stdlib.h> + +int main(void) { + return !aligned_alloc(_Alignof(void *), sizeof(void *)); +} diff --git a/build/has/confstr.c b/build/has/confstr.c new file mode 100644 index 0000000..58280b4 --- /dev/null +++ b/build/has/confstr.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <unistd.h> + +int main(void) { + confstr(_CS_PATH, NULL, 0); + return 0; +} diff --git a/build/has/extattr-get-file.c b/build/has/extattr-get-file.c new file mode 100644 index 0000000..ac9cf96 --- /dev/null +++ b/build/has/extattr-get-file.c @@ -0,0 +1,10 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <stddef.h> +#include <sys/types.h> +#include <sys/extattr.h> + +int main(void) { + return extattr_get_file("file", EXTATTR_NAMESPACE_USER, "xattr", NULL, 0); +} diff --git a/build/has/extattr-get-link.c b/build/has/extattr-get-link.c new file mode 100644 index 0000000..c35be5b --- /dev/null +++ b/build/has/extattr-get-link.c @@ -0,0 +1,10 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <stddef.h> +#include <sys/types.h> +#include <sys/extattr.h> + +int main(void) { + return extattr_get_link("link", EXTATTR_NAMESPACE_USER, "xattr", NULL, 0); +} diff --git a/build/has/extattr-list-file.c b/build/has/extattr-list-file.c new file mode 100644 index 0000000..e68a8bb --- /dev/null +++ b/build/has/extattr-list-file.c @@ -0,0 +1,10 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <stddef.h> +#include <sys/types.h> +#include <sys/extattr.h> + +int main(void) { + return extattr_list_file("file", EXTATTR_NAMESPACE_USER, NULL, 0); +} diff --git a/build/has/extattr-list-link.c b/build/has/extattr-list-link.c new file mode 100644 index 0000000..49f0ec2 --- /dev/null +++ b/build/has/extattr-list-link.c @@ -0,0 +1,10 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <stddef.h> +#include <sys/types.h> +#include <sys/extattr.h> + +int main(void) { + return extattr_list_link("link", EXTATTR_NAMESPACE_USER, NULL, 0); +} diff --git a/build/has/fdclosedir.c b/build/has/fdclosedir.c new file mode 100644 index 0000000..f4ad1f5 --- /dev/null +++ b/build/has/fdclosedir.c @@ -0,0 +1,8 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <dirent.h> + +int main(void) { + return fdclosedir(opendir(".")); +} diff --git a/build/has/getdents.c b/build/has/getdents.c new file mode 100644 index 0000000..579898f --- /dev/null +++ b/build/has/getdents.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <dirent.h> + +int main(void) { + char buf[1024]; + return getdents(3, (void *)buf, sizeof(buf)); +} diff --git a/build/has/getdents64-syscall.c b/build/has/getdents64-syscall.c new file mode 100644 index 0000000..7642d93 --- /dev/null +++ b/build/has/getdents64-syscall.c @@ -0,0 +1,11 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <dirent.h> +#include <sys/syscall.h> +#include <unistd.h> + +int main(void) { + char buf[1024]; + return syscall(SYS_getdents64, 3, (void *)buf, sizeof(buf)); +} diff --git a/build/has/getdents64.c b/build/has/getdents64.c new file mode 100644 index 0000000..d8e8062 --- /dev/null +++ b/build/has/getdents64.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <dirent.h> + +int main(void) { + char buf[1024]; + return getdents64(3, (void *)buf, sizeof(buf)); +} diff --git a/build/has/getmntent-1.c b/build/has/getmntent-1.c new file mode 100644 index 0000000..9854dcd --- /dev/null +++ b/build/has/getmntent-1.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <mntent.h> +#include <stdio.h> + +int main(void) { + return !getmntent(stdin); +} diff --git a/build/has/getmntent-2.c b/build/has/getmntent-2.c new file mode 100644 index 0000000..71f0220 --- /dev/null +++ b/build/has/getmntent-2.c @@ -0,0 +1,10 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <stdio.h> +#include <sys/mnttab.h> + +int main(void) { + struct mnttab mnt; + return getmntent(stdin, &mnt); +} diff --git a/build/has/getmntinfo.c b/build/has/getmntinfo.c new file mode 100644 index 0000000..90ef5fb --- /dev/null +++ b/build/has/getmntinfo.c @@ -0,0 +1,10 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <stddef.h> +#include <sys/types.h> +#include <sys/mount.h> + +int main(void) { + return getmntinfo(NULL, MNT_WAIT); +} diff --git a/build/has/getprogname-gnu.c b/build/has/getprogname-gnu.c new file mode 100644 index 0000000..6b97c5e --- /dev/null +++ b/build/has/getprogname-gnu.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <errno.h> + +int main(void) { + const char *str = program_invocation_short_name; + return str[0]; +} diff --git a/build/has/getprogname.c b/build/has/getprogname.c new file mode 100644 index 0000000..83dc8e8 --- /dev/null +++ b/build/has/getprogname.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <stdlib.h> + +int main(void) { + const char *str = getprogname(); + return str[0]; +} diff --git a/build/has/pipe2.c b/build/has/pipe2.c new file mode 100644 index 0000000..4cb43b5 --- /dev/null +++ b/build/has/pipe2.c @@ -0,0 +1,10 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <fcntl.h> +#include <unistd.h> + +int main(void) { + int fds[2]; + return pipe2(fds, O_CLOEXEC); +} diff --git a/build/has/posix-getdents.c b/build/has/posix-getdents.c new file mode 100644 index 0000000..f74bbe5 --- /dev/null +++ b/build/has/posix-getdents.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <dirent.h> + +int main(void) { + char buf[1024]; + return posix_getdents(3, (void *)buf, sizeof(buf), 0); +} diff --git a/build/has/posix-spawn-addfchdir-np.c b/build/has/posix-spawn-addfchdir-np.c new file mode 100644 index 0000000..b870a53 --- /dev/null +++ b/build/has/posix-spawn-addfchdir-np.c @@ -0,0 +1,11 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <spawn.h> + +int main(void) { + posix_spawn_file_actions_t actions; + posix_spawn_file_actions_init(&actions); + posix_spawn_file_actions_addfchdir_np(&actions, 3); + return 0; +} diff --git a/build/has/posix-spawn-addfchdir.c b/build/has/posix-spawn-addfchdir.c new file mode 100644 index 0000000..c52ff81 --- /dev/null +++ b/build/has/posix-spawn-addfchdir.c @@ -0,0 +1,11 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <spawn.h> + +int main(void) { + posix_spawn_file_actions_t actions; + posix_spawn_file_actions_init(&actions); + posix_spawn_file_actions_addfchdir(&actions, 3); + return 0; +} diff --git a/build/has/st-acmtim.c b/build/has/st-acmtim.c new file mode 100644 index 0000000..d687ab0 --- /dev/null +++ b/build/has/st-acmtim.c @@ -0,0 +1,12 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <sys/stat.h> + +int main(void) { + struct stat sb = {0}; + unsigned int a = sb.st_atim.tv_sec; + unsigned int c = sb.st_ctim.tv_sec; + unsigned int m = sb.st_mtim.tv_sec; + return a + c + m; +} diff --git a/build/has/st-acmtimespec.c b/build/has/st-acmtimespec.c new file mode 100644 index 0000000..f747bc0 --- /dev/null +++ b/build/has/st-acmtimespec.c @@ -0,0 +1,12 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <sys/stat.h> + +int main(void) { + struct stat sb = {0}; + unsigned int a = sb.st_atimespec.tv_sec; + unsigned int c = sb.st_ctimespec.tv_sec; + unsigned int m = sb.st_mtimespec.tv_sec; + return a + c + m; +} diff --git a/build/has/st-birthtim.c b/build/has/st-birthtim.c new file mode 100644 index 0000000..4964571 --- /dev/null +++ b/build/has/st-birthtim.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <sys/stat.h> + +int main(void) { + struct stat sb = {0}; + return sb.st_birthtim.tv_sec; +} diff --git a/build/has/st-birthtimespec.c b/build/has/st-birthtimespec.c new file mode 100644 index 0000000..91a613f --- /dev/null +++ b/build/has/st-birthtimespec.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <sys/stat.h> + +int main(void) { + struct stat sb = {0}; + return sb.st_birthtimespec.tv_sec; +} diff --git a/build/has/st-flags.c b/build/has/st-flags.c new file mode 100644 index 0000000..b1d0c32 --- /dev/null +++ b/build/has/st-flags.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <sys/stat.h> + +int main(void) { + struct stat sb = {0}; + return sb.st_flags; +} diff --git a/build/has/statx-syscall.c b/build/has/statx-syscall.c new file mode 100644 index 0000000..87ec869 --- /dev/null +++ b/build/has/statx-syscall.c @@ -0,0 +1,13 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <fcntl.h> +#include <linux/stat.h> +#include <sys/syscall.h> +#include <unistd.h> + +int main(void) { + struct statx sb; + syscall(SYS_statx, AT_FDCWD, ".", 0, STATX_BASIC_STATS, &sb); + return 0; +} diff --git a/build/has/statx.c b/build/has/statx.c new file mode 100644 index 0000000..65f1674 --- /dev/null +++ b/build/has/statx.c @@ -0,0 +1,11 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <fcntl.h> +#include <sys/stat.h> + +int main(void) { + struct statx sb; + statx(AT_FDCWD, ".", 0, STATX_BASIC_STATS, &sb); + return 0; +} diff --git a/build/has/strerror-l.c b/build/has/strerror-l.c new file mode 100644 index 0000000..3dcc4d7 --- /dev/null +++ b/build/has/strerror-l.c @@ -0,0 +1,11 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <errno.h> +#include <locale.h> +#include <string.h> + +int main(void) { + locale_t locale = duplocale(LC_GLOBAL_LOCALE); + return !strerror_l(ENOMEM, locale); +} diff --git a/build/has/strerror-r-gnu.c b/build/has/strerror-r-gnu.c new file mode 100644 index 0000000..26ca0ee --- /dev/null +++ b/build/has/strerror-r-gnu.c @@ -0,0 +1,11 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <errno.h> +#include <string.h> + +int main(void) { + char buf[256]; + // Check that strerror_r() returns a pointer + return *strerror_r(ENOMEM, buf, sizeof(buf)); +} diff --git a/build/has/strerror-r-posix.c b/build/has/strerror-r-posix.c new file mode 100644 index 0000000..41b2d30 --- /dev/null +++ b/build/has/strerror-r-posix.c @@ -0,0 +1,11 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <errno.h> +#include <string.h> + +int main(void) { + char buf[256]; + // Check that strerror_r() returns an integer + return 2 * strerror_r(ENOMEM, buf, sizeof(buf)); +} diff --git a/build/has/string-to-flags.c b/build/has/string-to-flags.c new file mode 100644 index 0000000..027d72c --- /dev/null +++ b/build/has/string-to-flags.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <stddef.h> +#include <util.h> + +int main(void) { + return string_to_flags(NULL, NULL, NULL); +} diff --git a/build/has/strtofflags.c b/build/has/strtofflags.c new file mode 100644 index 0000000..73ecbcb --- /dev/null +++ b/build/has/strtofflags.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <stddef.h> +#include <unistd.h> + +int main(void) { + return strtofflags(NULL, NULL, NULL); +} diff --git a/build/has/timegm.c b/build/has/timegm.c new file mode 100644 index 0000000..6e2d155 --- /dev/null +++ b/build/has/timegm.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <time.h> + +int main(void) { + struct tm tm = {0}; + return (int)timegm(&tm); +} diff --git a/build/has/tm-gmtoff.c b/build/has/tm-gmtoff.c new file mode 100644 index 0000000..543df48 --- /dev/null +++ b/build/has/tm-gmtoff.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <time.h> + +int main(void) { + struct tm tm = {0}; + return tm.tm_gmtoff; +} diff --git a/build/has/uselocale.c b/build/has/uselocale.c new file mode 100644 index 0000000..a712ff8 --- /dev/null +++ b/build/has/uselocale.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <locale.h> + +int main(void) { + locale_t locale = uselocale((locale_t)0); + return locale == LC_GLOBAL_LOCALE; +} diff --git a/build/header.mk b/build/header.mk new file mode 100644 index 0000000..09454c5 --- /dev/null +++ b/build/header.mk @@ -0,0 +1,73 @@ +# Copyright © Tavian Barnes <tavianator@tavianator.com> +# SPDX-License-Identifier: 0BSD + +# Makefile that generates gen/config.h + +include build/prelude.mk +include gen/config.mk +include build/exports.mk + +# All header fragments we generate +HEADERS := \ + gen/has/--st-birthtim.h \ + gen/has/acl-get-entry.h \ + gen/has/acl-get-file.h \ + gen/has/acl-get-tag-type.h \ + gen/has/acl-is-trivial-np.h \ + gen/has/acl-trivial.h \ + gen/has/aligned-alloc.h \ + gen/has/confstr.h \ + gen/has/extattr-get-file.h \ + gen/has/extattr-get-link.h \ + gen/has/extattr-list-file.h \ + gen/has/extattr-list-link.h \ + gen/has/fdclosedir.h \ + gen/has/getdents.h \ + gen/has/getdents64-syscall.h \ + gen/has/getdents64.h \ + gen/has/getmntent-1.h \ + gen/has/getmntent-2.h \ + gen/has/getmntinfo.h \ + gen/has/getprogname-gnu.h \ + gen/has/getprogname.h \ + gen/has/pipe2.h \ + gen/has/posix-getdents.h \ + gen/has/posix-spawn-addfchdir-np.h \ + gen/has/posix-spawn-addfchdir.h \ + gen/has/st-acmtim.h \ + gen/has/st-acmtimespec.h \ + gen/has/st-birthtim.h \ + gen/has/st-birthtimespec.h \ + gen/has/st-flags.h \ + gen/has/statx-syscall.h \ + gen/has/statx.h \ + gen/has/strerror-l.h \ + gen/has/strerror-r-gnu.h \ + gen/has/strerror-r-posix.h \ + gen/has/string-to-flags.h \ + gen/has/strtofflags.h \ + gen/has/timegm.h \ + gen/has/tm-gmtoff.h \ + gen/has/uselocale.h + +# Previously generated by pkgs.mk +PKG_HEADERS := ${ALL_PKGS:%=gen/with/%.h} + +gen/config.h: ${PKG_HEADERS} ${HEADERS} + ${MSG} "[ GEN] $@" + @printf '// %s\n' "$@" >$@ + @printf '#ifndef BFS_CONFIG_H\n' >>$@ + @printf '#define BFS_CONFIG_H\n' >>$@ + @cat ${.ALLSRC} >>$@ + @printf '#endif // BFS_CONFIG_H\n' >>$@ + @cat ${.ALLSRC:%=%.log} >gen/config.log + ${VCAT} $@ +.PHONY: gen/config.h + +# The short name of the config test +SLUG = ${@:gen/%.h=%} + +${HEADERS}:: + @${MKDIR} ${@D} + @build/define-if.sh ${SLUG} build/cc.sh build/${SLUG}.c >$@ 2>$@.log; \ + build/msg-if.sh "[ CC ] ${SLUG}.c" test $$? -eq 0 diff --git a/build/msg-if.sh b/build/msg-if.sh new file mode 100755 index 0000000..afb478c --- /dev/null +++ b/build/msg-if.sh @@ -0,0 +1,31 @@ +#!/bin/sh + +# Copyright © Tavian Barnes <tavianator@tavianator.com> +# SPDX-License-Identifier: 0BSD + +# Print a success/failure indicator from a makefile: +# +# $ ./configure +# [ CC ] with/liburing.c ✘ +# [ CC ] with/oniguruma.c ✔ + +set -eu + +MSG="$1" +shift + +if [ -z "${NO_COLOR:-}" ] && [ -t 1 ]; then + Y='\033[1;32m✔\033[0m' + N='\033[1;31m✘\033[0m' +else + Y='✔' + N='✘' +fi + +if "$@"; then + YN="$Y" +else + YN="$N" +fi + +build/msg.sh "$(printf "%-37s $YN" "$MSG")" diff --git a/build/msg.sh b/build/msg.sh new file mode 100755 index 0000000..a7da31b --- /dev/null +++ b/build/msg.sh @@ -0,0 +1,62 @@ +#!/bin/sh + +# Copyright © Tavian Barnes <tavianator@tavianator.com> +# SPDX-License-Identifier: 0BSD + +# Print a message from a makefile: +# +# $ make -s +# $ make +# [ CC ] src/main.c +# $ make V=1 +# cc -Isrc -Igen -D... + +set -eu + +# Get the $MAKEFLAGS from the top-level make invocation +MFLAGS="${XMAKEFLAGS-${MAKEFLAGS-}}" + +# Check if make should be quiet (make -s) +is_quiet() { + # GNU make puts single-letter flags in the first word of $MAKEFLAGS, + # without a leading dash + case "${MFLAGS%% *}" in + -*) : ;; + *s*) return 0 ;; + esac + + # BSD make puts each flag separately like -r -s -j 48 + for flag in $MFLAGS; do + case "$flag" in + # Ignore things like --jobserver-auth + --*) continue ;; + # Skip variable assignments + *=*) break ;; + -*s*) return 0 ;; + esac + done + + return 1 +} + +# Check if make should be loud (make V=1) +is_loud() { + test "$XV" +} + +MSG="$1" +shift + +if ! is_quiet && ! is_loud; then + printf '%s\n' "$MSG" +fi + +if [ $# -eq 0 ]; then + exit +fi + +if is_loud; then + printf '%s\n' "$*" +fi + +"$@" diff --git a/build/pkgconf.sh b/build/pkgconf.sh new file mode 100755 index 0000000..244c95d --- /dev/null +++ b/build/pkgconf.sh @@ -0,0 +1,96 @@ +#!/bin/sh + +# Copyright © Tavian Barnes <tavianator@tavianator.com> +# SPDX-License-Identifier: 0BSD + +# pkg-config wrapper with hardcoded fallbacks + +set -eu + +MODE= +case "${1:-}" in + --*) + MODE="$1" + shift +esac + +if [ $# -lt 1 ]; then + exit +fi + +case "$XNOLIBS" in + y|1) + exit 1 +esac + +if [ -z "$MODE" ]; then + # Check whether the libraries exist at all + for LIB; do + # Check ${WITH_$LIB} + WITH_LIB="WITH_$(printf '%s' "$LIB" | tr 'a-z-' 'A-Z_')" + eval "WITH=\"\${$WITH_LIB:-}\"" + case "$WITH" in + y|1) continue ;; + n|0) exit 1 ;; + esac + + CFLAGS=$("$0" --cflags "$LIB") || exit 1 + LDFLAGS=$("$0" --ldflags "$LIB") || exit 1 + LDLIBS=$("$0" --ldlibs "$LIB") || exit 1 + build/cc.sh $CFLAGS $LDFLAGS build/with/$LIB.c $LDLIBS || exit 1 + done +fi + +# Defer to pkg-config if possible +if command -v "${XPKG_CONFIG:-}" >/dev/null 2>&1; then + case "$MODE" in + --cflags) + "$XPKG_CONFIG" --cflags "$@" + ;; + --ldflags) + "$XPKG_CONFIG" --libs-only-L --libs-only-other "$@" + ;; + --ldlibs) + "$XPKG_CONFIG" --libs-only-l "$@" + ;; + esac + + exit +fi + +# pkg-config unavailable, emulate it ourselves +CFLAGS="" +LDFLAGS="" +LDLIBS="" + +for LIB; do + case "$LIB" in + libacl) + LDLIB=-lacl + ;; + libcap) + LDLIB=-lcap + ;; + libselinux) + LDLIB=-lselinux + ;; + liburing) + LDLIB=-luring + ;; + oniguruma) + LDLIB=-lonig + ;; + *) + printf 'error: Unknown package %s\n' "$LIB" >&2 + exit 1 + ;; + esac + + LDLIBS="$LDLIBS$LDLIB " +done + +case "$MODE" in + --ldlibs) + printf '%s\n' "$LDLIBS" + ;; +esac diff --git a/build/pkgs.mk b/build/pkgs.mk new file mode 100644 index 0000000..5de9ac2 --- /dev/null +++ b/build/pkgs.mk @@ -0,0 +1,33 @@ +# Copyright © Tavian Barnes <tavianator@tavianator.com> +# SPDX-License-Identifier: 0BSD + +# Makefile that generates gen/pkgs.mk + +include build/prelude.mk +include gen/vars.mk +include gen/flags.mk +include build/exports.mk + +HEADERS := ${ALL_PKGS:%=gen/with/%.h} + +gen/pkgs.mk: ${HEADERS} + ${MSG} "[ GEN] $@" + @printf '# %s\n' "$@" >$@ + @gen() { \ + printf 'PKGS := %s\n' "$$*"; \ + printf '_CFLAGS += %s\n' "$$(build/pkgconf.sh --cflags "$$@")"; \ + printf '_LDFLAGS += %s\n' "$$(build/pkgconf.sh --ldflags "$$@")"; \ + printf '_LDLIBS := %s $${_LDLIBS}\n' "$$(build/pkgconf.sh --ldlibs "$$@")"; \ + }; \ + gen $$(grep -l ' true$$' ${.ALLSRC} | sed 's|.*/\(.*\)\.h|\1|') >>$@ + ${VCAT} $@ + +.PHONY: gen/pkgs.mk + +# Convert gen/with/foo.h to foo +PKG = ${@:gen/with/%.h=%} + +${HEADERS}:: + @${MKDIR} ${@D} + @build/define-if.sh with/${PKG} build/pkgconf.sh ${PKG} >$@ 2>$@.log; \ + build/msg-if.sh "[ CC ] with/${PKG}.c" test $$? -eq 0; diff --git a/build/prelude.mk b/build/prelude.mk new file mode 100644 index 0000000..38e432c --- /dev/null +++ b/build/prelude.mk @@ -0,0 +1,125 @@ +# Copyright © Tavian Barnes <tavianator@tavianator.com> +# SPDX-License-Identifier: 0BSD + +# Common makefile utilities. Compatible with both GNU make and most BSD makes. + +# BSD make will chdir into ${.OBJDIR} by default, unless we tell it not to +.OBJDIR: . + +# We don't use any suffix rules +.SUFFIXES: + +# GNU make has $^ for the full list of targets, while BSD make has $> and the +# long-form ${.ALLSRC}. We could write $^ $> to get them both, but that would +# break if one of them implemented support for the other. So instead, bring +# BSD's ${.ALLSRC} to GNU. +.ALLSRC ?= $^ + +# Installation paths +DESTDIR ?= +PREFIX ?= /usr +MANDIR ?= ${PREFIX}/share/man + +# Configurable executables +CC ?= cc +INSTALL ?= install +MKDIR ?= mkdir -p +PKG_CONFIG ?= pkg-config +RM ?= rm -f + +# GNU and BSD make have incompatible syntax for conditionals, but we can do a +# lot with just nested variable expansion. We use "y" as the canonical +# truthy value, and "" (the empty string) as the canonical falsey value. +# +# To normalize a boolean, use ${TRUTHY,${VAR}}, which expands like this: +# +# VAR=y ${TRUTHY,${VAR}} => ${TRUTHY,y} => y +# VAR=1 ${TRUTHY,${VAR}} => ${TRUTHY,1} => y +# VAR=n ${TRUTHY,${VAR}} => ${TRUTHY,n} => [empty] +# VAR=other ${TRUTHY,${VAR}} => ${TRUTHY,other} => [empty] +# VAR= ${TRUTHY,${VAR}} => ${TRUTHY,} => [emtpy] +# +# Inspired by https://github.com/wahern/autoguess +TRUTHY,y := y +TRUTHY,1 := y + +# Boolean operators are also implemented with nested expansion +NOT, := y + +# Normalize ${V} to either "y" or "" +export XV=${TRUTHY,${V}} + +# Suppress output unless V=1 +Q, := @ +Q := ${Q,${XV}} + +# Show full commands with `make V=1`, otherwise short summaries +MSG = @build/msg.sh + +# cat a file if V=1 +VCAT,y := @cat +VCAT, := @: +VCAT := ${VCAT,${XV}} + +# All external dependencies +ALL_PKGS := \ + libacl \ + libcap \ + libselinux \ + liburing \ + oniguruma + +# List all object files here, as they're needed by both `./configure` and `make` + +# All object files except the entry point +LIBBFS := \ + obj/src/alloc.o \ + obj/src/bar.o \ + obj/src/bfstd.o \ + obj/src/bftw.o \ + obj/src/color.o \ + obj/src/ctx.o \ + obj/src/diag.o \ + obj/src/dir.o \ + obj/src/dstring.o \ + obj/src/eval.o \ + obj/src/exec.o \ + obj/src/expr.o \ + obj/src/fsade.o \ + obj/src/ioq.o \ + obj/src/mtab.o \ + obj/src/opt.o \ + obj/src/parse.o \ + obj/src/printf.o \ + obj/src/pwcache.o \ + obj/src/sighook.o \ + obj/src/stat.o \ + obj/src/thread.o \ + obj/src/trie.o \ + obj/src/typo.o \ + obj/src/xregex.o \ + obj/src/xspawn.o \ + obj/src/xtime.o \ + obj/gen/version.o + +# Unit test objects +UNIT_OBJS := \ + obj/tests/alloc.o \ + obj/tests/bfstd.o \ + obj/tests/bit.o \ + obj/tests/ioq.o \ + obj/tests/list.o \ + obj/tests/main.o \ + obj/tests/sighook.o \ + obj/tests/trie.o \ + obj/tests/xspawn.o \ + obj/tests/xtime.o + +# All object files +OBJS := \ + obj/src/main.o \ + obj/tests/mksock.o \ + obj/tests/xspawnee.o \ + obj/tests/xtouch.o \ + ${LIBBFS} \ + ${UNIT_OBJS} diff --git a/build/with/libacl.c b/build/with/libacl.c new file mode 100644 index 0000000..de1fe50 --- /dev/null +++ b/build/with/libacl.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <sys/acl.h> + +int main(void) { + acl_free(0); + return 0; +} diff --git a/build/with/libcap.c b/build/with/libcap.c new file mode 100644 index 0000000..58e832c --- /dev/null +++ b/build/with/libcap.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <sys/capability.h> + +int main(void) { + cap_free(0); + return 0; +} diff --git a/build/with/libselinux.c b/build/with/libselinux.c new file mode 100644 index 0000000..bca409d --- /dev/null +++ b/build/with/libselinux.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <selinux/selinux.h> + +int main(void) { + freecon(0); + return 0; +} diff --git a/build/with/liburing.c b/build/with/liburing.c new file mode 100644 index 0000000..bea499a --- /dev/null +++ b/build/with/liburing.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <liburing.h> + +int main(void) { + io_uring_free_probe(0); + return 0; +} diff --git a/build/with/oniguruma.c b/build/with/oniguruma.c new file mode 100644 index 0000000..cb17596 --- /dev/null +++ b/build/with/oniguruma.c @@ -0,0 +1,9 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +#include <oniguruma.h> + +int main(void) { + onig_free(0); + return 0; +} |