commit 0253d2bcae9a5fe32fe14ae79a8b0f18ce5fe066
parent 1a15532cb8e3fd3f7a0977851df41887c8aacf82
Author: Jan Pobrislo <ccx@te2000.cz>
Date: Fri, 21 Nov 2025 03:18:21 +0000
WIP configure script
Diffstat:
4 files changed, 344 insertions(+), 29 deletions(-)
diff --git a/Makefile b/Makefile
@@ -8,11 +8,11 @@ script_executables: ${script_executables}
c_executables:=lns-lockdown lns-envuidgid lns-applyuidgid lns-pidns
include simplelink.mk
-conf/cc conf/ld.shared conf/ld.static conf/script_gen:
+conf/cc conf/ld.shared conf/ld.static conf/script_gen conf/config.mk:
@printf '%s\n' "Please run configure script first!"; exit 1
build/%: src/%.in conf/script_gen scripts/abspaths2.awk
- conf/script_gen awk -f ./scripts/abspaths2.awk 'src/$*.in' >'$@.new'
+ sh conf/script_gen awk -f ./scripts/abspaths2.awk 'src/$*.in' >'$@.new'
mv -v '$@.new' '$@'
clean:
@@ -21,3 +21,9 @@ clean:
distclean:
rm -rf conf build
.PHONY: clean
+
+-include conf/config.mk
+
+install: $(install_bin_files)
+ install -d $(DESTDIR)$(INSTALL_BINDIR)
+ install -t $(DESTDIR)$(INSTALL_BINDIR) $(install_bin_files)
diff --git a/configure b/configure
@@ -3,6 +3,191 @@ cd "$(dirname "$0")" || exit $?
sh=$(which sh) || exit $?
export sh
+usage () {
+cat <<EOF
+Usage: $0 [OPTION]... [TARGET]
+
+Defaults for the options are specified in brackets.
+
+System types:
+ --target=TARGET configure to run on target TARGET [detected]
+ --host=TARGET same as --target
+
+Installation directories:
+ --prefix=PREFIX main installation prefix [/]
+ --exec-prefix=EPREFIX installation prefix for executable files [PREFIX]
+
+Fine tuning of the installation directories:
+ --dynlibdir=DIR shared library files [PREFIX/lib]
+ --bindir=BINDIR user executables [EPREFIX/bin]
+ --libexecdir=DIR package-scoped executables [EPREFIX/libexec]
+ --libdir=DIR static library files [PREFIX/lib]
+ --includedir=DIR C header files [PREFIX/include]
+ --sysconfdir=DIR global configuration files [PREFIX/etc]
+ --pkgconfdir=DIR pkg-config .pc files [PREFIX/lib/pkgconfig]
+
+ If no --prefix option is given, by default libdir (but not dynlibdir) will be
+ /usr/lib, and includedir will be /usr/include.
+
+Dependencies:
+ --with-sysdeps=DIR use sysdeps in DIR [PREFIX/lib/skalibs/sysdeps]
+ --with-include=DIR add DIR to the list of searched directories for headers
+ --with-lib=DIR add DIR to the list of searched directories for static libraries
+ --with-dynlib=DIR add DIR to the list of searched directories for shared libraries
+ --with-pkgconfig[=PROG] use pkg-config to look for dependencies
+
+ If no --prefix option is given, by default sysdeps will be fetched from
+ /usr/lib/skalibs/sysdeps.
+
+Optional features:
+ --enable-shared build shared libraries [disabled]
+ --disable-static do not build static libraries [enabled]
+ --disable-allstatic do not prefer linking against static libraries [enabled]
+ --enable-static-libc make entirely static binaries [disabled]
+ --disable-all-pic do not build executables or static libs as PIC [enabled]
+ --enable-pkgconfig Build and install .pc files for pkg-config [disabled]
+ --enable-slashpackage[=ROOT] assume /package installation at ROOT [disabled]
+ --enable-absolute-paths hardcode absolute BINDIR/foobar paths in binaries [disabled]
+ --enable-nsss use the nsss library for user information [disabled]
+ --disable-execline don't use the execline library [enabled]
+
+EOF
+exit 0
+}
+
+stripdir() {
+ eval 'while true; do case $'$1' in (*/) '$1'=${'$1'%/};; (*) break;; esac; done'
+}
+
+got_arg() {
+ case $1 in
+ (prefix) arg_prefix=$2; stripdir arg_prefix ;;
+ (dynlibdir) arg_dynlibdir=$2; stripdir arg_dynlibdir ;;
+ (libexecdir) arg_libexecdir=$2; stripdir arg_libexecdir ;;
+ (bindir) arg_bindir=$2; stripdir arg_bindir ;;
+ (libdir) arg_libdir=$2; stripdir arg_libdir ;;
+ (includedir) arg_includedir=$2; stripdir arg_includedir ;;
+ (sysconfdir) arg_sysconfdir=$2; stripdir arg_sysconfdir ;;
+ (pkgconfdir) arg_pkgconfdir=$2; stripdir arg_pkgconfdir ;;
+ (*) return 1 ;;
+ esac
+}
+
+got_enable() {
+ case $1 in
+ (shared)
+ case $2 in
+ (libc) enable_shared=libc;;
+ (yes) enable_shared=true;;
+ (no) enable_shared=false;;
+ (*) return 2;;
+ esac
+ ;;
+ (static)
+ case $2 in
+ (yes) enable_shared=false;;
+ (no) enable_shared=true;;
+ (*) return 2;;
+ esac
+ ;;
+ (absolute-paths)
+ case $2 in
+ (manual) enable_abspath=manual;;
+ (yes) enable_abspath=true;;
+ (no) enable_abspath=false;;
+ (*) return 2;;
+ esac
+ ;;
+ (*) return 1 ;;
+ esac
+}
+
+got_prog() {
+ case $1 in
+ (awk) prog_awk=$2 ;;
+ (cd) prog_cd=$2 ;;
+ (execlineb) prog_execlineb=$2 ;;
+ (if) prog_if=$2 ;;
+ (importas) prog_importas=$2 ;;
+ (ln) prog_ln=$2 ;;
+ (mkdir) prog_mkdir=$2 ;;
+ (mknod) prog_mknod=$2 ;;
+ (mount) prog_mount=$2 ;;
+ (multisubstitute) prog_multisubstitute=$2 ;;
+ (runblock) prog_runblock=$2 ;;
+ (s6-mount) prog_s6_mount=$2 ;;
+ (sh) prog_sh=$2 ;;
+ (shift) prog_shift=$2 ;;
+ (*) return 1 ;;
+ esac
+}
+
+parse_args() {
+ for arg ; do
+ case "$arg" in
+ (--help) usage ;;
+ (--enable-*=*)
+ arg1=${arg%%=*}
+ arg1=${arg1#--enable-}
+ arg2=${arg#*=}
+ got_enable "$arg1" "$arg2" && continue
+ ;;
+ (--enable-*)
+ got_enable "${arg#--enable-}" yes && continue
+ ;;
+ (--disable-*=yes)
+ arg1=${arg#--disable-}
+ got_enable "${arg%=*}" no && continue
+ ;;
+ (--disable-*=no)
+ arg1=${arg#--disable-}
+ got_enable "${arg%=*}" yes && continue
+ ;;
+ (--disable-*=*) # error
+ ;;
+ (--disable-*)
+ arg1=${arg#--disable-}
+ got_enable "${arg%=*}" no && continue
+ ;;
+ (--path-to-*=*)
+ arg1=${arg%%=*}
+ arg1=${arg1#--path-to-}
+ arg2=${arg#*=}
+ got_prog "$arg1" "$arg2" && continue
+ ;;
+ (--*=*)
+ arg1=${arg%%=*}
+ arg1=${arg1#--}
+ arg2=${arg#*=}
+ got_arg "$arg1" "$arg2" && continue
+ ;;
+# --exec-prefix=*) exec_prefix=${arg#*=} ;;
+# --with-sysdeps=*) sysdeps=${arg#*=} manualsysdeps=true ;;
+# --with-include=*) var=${arg#*=} ; stripdir var ; addincpath="$addincpath -I$var" ; depincpath="${depincpath}${depincpath:+ }-I$var" ;;
+# --with-lib=*) var=${arg#*=} ; stripdir var ; addlibspath="$addlibspath -L$var" ; deplibpath="${deplibpath}${deplibpath:+ }-L$var" ; vpaths="$vpaths $var" ;;
+# --with-dynlib=*) var=${arg#*=} ; stripdir var ; addlibdpath="$addlibdpath -L$var" ; vpathd="$vpathd $var" ;;
+# --with-pkgconfig=*) pkgconf=${arg#*=} ;;
+# --with-pkgconfig) pkgconf=${PKG_CONFIG:-pkg-config} ;;
+# --without-pkgconfig) pkgconf= ;;
+# --enable-all-pic|--enable-all-pic=yes) allpic=true ;;
+# --disable-all-pic|--enable-all-pic=no) allpic=false ;;
+ esac
+ printf >&2 'configure: fatal: unrecognized option: %s\n' "$arg"
+ exit 2
+ done
+}
+
+parse_args "$@"
+
+prefix=${arg_prefix-/usr/local}
+dynlibdir=${arg_dynlibdir-${prefix}/lib}
+libexecdir=${arg_libexecdir-${prefix}/libexec}
+bindir=${arg_bindir-${prefix}/bin}
+libdir=${arg_libdir-${prefix}/lib}
+includedir=${arg_includedir-${prefix}/include}
+sysconfdir=${arg_sysconfdir-${prefix}/etc}
+pkgconfdir=${arg_pkgconfdir-${prefix}/lib/pkgconfig}
+
# CC
# CFLAGS
: ${CFLAGS=-D_GNU_SOURCE -Werror -pipe -std=c11 -fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables -ffunction-sections -fdata-sections -g}
@@ -17,38 +202,135 @@ export LDLIBS
# LIBRARY_PATH
# LOADLIBES
+case $enable_abspath in
+ (false)
+ : ${prog_awk=awk}
+ : ${prog_cd=cd}
+ : ${prog_execlineb=execlineb}
+ : ${prog_if=if}
+ : ${prog_importas=importas}
+ : ${prog_ln=ln}
+ # : ${prog_lns_mounts_to_env=lns-mounts-to-env}
+ : ${prog_mkdir=mkdir}
+ : ${prog_mknod=mknod}
+ : ${prog_mount=mount}
+ : ${prog_multisubstitute=multisubstitute}
+ : ${prog_runblock=runblock}
+ : ${prog_s6_mount=s6-mount}
+ : ${prog_sh=sh}
+ : ${prog_shift=shift}
+ ;;
+ (true)
+ : ${prog_awk=$(which awk 2>/dev/null )}
+ : ${prog_cd=$(which cd 2>/dev/null )}
+ : ${prog_execlineb=$(which execlineb 2>/dev/null )}
+ : ${prog_if=$(which if 2>/dev/null )}
+ : ${prog_importas=$(which importas 2>/dev/null )}
+ : ${prog_ln=$(which ln 2>/dev/null )}
+ # : ${prog_lns_mounts_to_env=$(which lns-mounts-to-env 2>/dev/null )}
+ : ${prog_mkdir=$(which mkdir 2>/dev/null )}
+ : ${prog_mknod=$(which mknod 2>/dev/null )}
+ : ${prog_mount=$(which mount 2>/dev/null )}
+ : ${prog_multisubstitute=$(which multisubstitute 2>/dev/null )}
+ : ${prog_runblock=$(which runblock 2>/dev/null )}
+ : ${prog_s6_mount=$(which s6-mount 2>/dev/null )}
+ : ${prog_sh=$(which sh 2>/dev/null )}
+ : ${prog_shift=$(which shift 2>/dev/null )}
+ ;;
+ (manual) ;;
+ (*) exit 3 ;;
+esac
+
+prog_lns_mounts_to_env=$bindir/lns-mount-to-env
+
+die_notfound() {
+ printf >&2 "configure: fatal: absolute paths required and path to '%s' was not found\n" "$1"
+ exit 1
+}
+
+test -n "$prog_awk" || die_notfound awk
+test -n "$prog_cd" || die_notfound cd
+test -n "$prog_execlineb" || die_notfound execlineb
+test -n "$prog_if" || die_notfound if
+test -n "$prog_importas" || die_notfound importas
+test -n "$prog_ln" || die_notfound ln
+test -n "$prog_lns_mounts_to_env" || die_notfound lns-mounts-to-env
+test -n "$prog_mkdir" || die_notfound mkdir
+test -n "$prog_mknod" || die_notfound mknod
+test -n "$prog_mount" || die_notfound mount
+test -n "$prog_multisubstitute" || die_notfound multisubstitute
+test -n "$prog_runblock" || die_notfound runblock
+test -n "$prog_s6_mount" || die_notfound s6-mount
+test -n "$prog_sh" || die_notfound sh
+test -n "$prog_shift" || die_notfound shift
+
replace_if_different() {
- if ! test -e "$1"; then
- mv "$1.new" "$1" || exit $?
- return 0
- fi
- local R
- cmp -s "$1" "$1.new"
- R=$?
- case $R in
- (0)
- rm "$1.new" || exit $?
- ;;
- (1)
- mv "$1.new" "$1" || exit $?
- ;;
- (*)
- printf >&2 "configure: fatal: failed to compare files %s and %s\n" "$1" "$1.new"
- exit $R
- ;;
- esac
+ if ! test -e "$1"; then
+ mv "$1.new" "$1" || exit $?
+ return 0
+ fi
+ local R
+ cmp -s "$1" "$1.new"
+ R=$?
+ case $R in
+ (0)
+ rm "$1.new" || exit $?
+ ;;
+ (1)
+ mv "$1.new" "$1" || exit $?
+ ;;
+ (*)
+ printf >&2 "configure: fatal: failed to compare files %s and %s\n" "$1" "$1.new"
+ exit $R
+ ;;
+ esac
}
generate() {
- local out=$1
- shift || exit $?
- "$@" >"$out.new" || exit $?
- chmod +x "$out.new" || exit $?
- replace_if_different "$out" || exit $?
+ local out=$1
+ shift || exit $?
+ "$@" >"$out.new" || exit $?
+ chmod +x "$out.new" || exit $?
+ replace_if_different "$out" || exit $?
+}
+
+mk_script_gen() {
+ set -e
+ awk -f ./scripts/args_to_sh.awk \
+ awk="$prog_awk" \
+ cd="$prog_cd" \
+ execlineb="$prog_execlineb" \
+ if="$prog_if" \
+ importas="$prog_importas" \
+ ln="$prog_ln" \
+ lns-mounts-to-env="$prog_lns_mounts_to_env" \
+ mkdir="$prog_mkdir" \
+ mknod="$prog_mknod" \
+ mount="$prog_mount" \
+ multisubstitute="$prog_multisubstitute" \
+ runblock="$prog_runblock" \
+ s6-mount="$prog_s6_mount" \
+ sh="$prog_sh" \
+ shift="$prog_shift"
+}
+
+mk_config_mk() {
+ set -e
+ printf '%s\n' "INSTALL_BINDIR:=$bindir"
+ case $enable_shared in
+ (false)
+ printf '%s\n' 'install_bin_files:=${script_executables} $(static_executables)'
+ ;;
+ (*)
+ printf '%s\n' 'install_bin_files:=${script_executables} $(shared_executables)'
+ ;;
+ esac
}
mkdir -p conf || exit $?
+generate conf/config.mk mk_config_mk
+generate conf/script_gen mk_script_gen
generate conf/cc awk -f ./scripts/gen-cc
generate conf/ld.shared awk -f ./scripts/gen-ld
generate conf/ld.static env LDFLAGS="$LDFLAGS -static" awk -f ./scripts/gen-ld
diff --git a/scripts/args_to_sh.awk b/scripts/args_to_sh.awk
@@ -0,0 +1,25 @@
+#!/bin/awk -f
+function die(msg) {
+ print msg >>"/dev/stderr"
+ exit 1
+}
+
+function s(re, t, str) {
+ gsub(re, t, str)
+ return str
+}
+
+function shquote(text) {
+ if(text !~ "[^-+,_./:@0-9A-Za-z]") {
+ return text
+ }
+ return "'" s("'", "'\\''", text) "'"
+}
+
+BEGIN {
+ printf "%s\n%s", "#!/bin/sh", "exec \"$@\""
+ for(i=1; i<ARGC; i++) {
+ printf " %s", shquote(ARGV[i])
+ }
+ ARGC = 1
+}
diff --git a/simplelink.mk b/simplelink.mk
@@ -4,9 +4,11 @@ BUILD_DIR ?= ${TOP_DIR}/build
SCRIPTS_DIR ?= ${TOP_DIR}/scripts
CONF_DIR ?= ${TOP_DIR}/conf
-shared_executables: $(patsubst %,$(BUILD_DIR)/bin-shared/%,$(c_executables))
-static_executables: $(patsubst %,$(BUILD_DIR)/bin-static/%,$(c_executables))
+shared_executables:=$(patsubst %,$(BUILD_DIR)/bin-shared/%,$(c_executables))
+static_executables:=$(patsubst %,$(BUILD_DIR)/bin-static/%,$(c_executables))
.PHONY: shared_executables static_executables
+shared_executables: $(shared_executables)
+static_executables: $(static_executables)
define simplelink =
include $$(BUILD_DIR)/$(1)_main.c.deps.mk
@@ -16,7 +18,7 @@ include $$(BUILD_DIR)/$(1)_main.c.deps.mk
$$(BUILD_DIR)/bin-static/$(1): $$(LINKDEP_$(subst -,__,$(1))_main__c) $$(CONF_DIR)/ld.static $$(BUILD_DIR)/$(1)_main.c.deps.mk $$(BUILD_DIR)/bin-static/.exists
$$(CONF_DIR)/ld.static -o '$$@' $$(LINKDEP_$(subst -,__,$(1))_main__c)
endef
-$(foreach var,$(executables),$(eval $(call simplelink,$(var))))
+$(foreach var,$(c_executables),$(eval $(call simplelink,$(var))))
## pattern rules:
