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-rw-r--r--BOOTSTRAP-UNIX.cli8
-rw-r--r--build.sh.in92
2 files changed, 95 insertions, 5 deletions
diff --git a/BOOTSTRAP-UNIX.cli b/BOOTSTRAP-UNIX.cli
index ee9f12d..1023ca2 100644
--- a/BOOTSTRAP-UNIX.cli
+++ b/BOOTSTRAP-UNIX.cli
@@ -189,6 +189,14 @@ $ build2/build2/b-boot configure \
config.import.libsqlite3=
\
+If performing an installation with the \c{build.sh} script, then to use the
+system-installed dependencies pass the \c{--system} option, specifying such
+dependencies as a comma-separated list. For example:
+
+\
+$ ./build.sh --system libsqlite3,libpkg-config g++
+\
+
|
The strange-looking \c{config.install.data_root=root/stage} means install
diff --git a/build.sh.in b/build.sh.in
index 3334011..2260b1f 100644
--- a/build.sh.in
+++ b/build.sh.in
@@ -54,6 +54,7 @@ local=
bpkg_install=true
bdep_install=true
modules="$standard_modules"
+system=
private=
idir=
exe_prefix=
@@ -81,6 +82,7 @@ while test $# -ne 0; do
diag " --no-modules Don't install standard build system modules."
diag " --modules <list> Install only specified standard build system modules."
diag " --install-dir <dir> Alternative installation directory."
+ diag " --system <list> Use system-installed versions of specified dependencies."
diag " --exe-prefix <pfx> Toolchain executables name prefix."
diag " --exe-suffix <sfx> Toolchain executables name suffix."
diag " --stage-suffix <sfx> Staged executables name suffix ('-stage' by default)."
@@ -123,6 +125,12 @@ while test $# -ne 0; do
diag
diag "$0 g++ -g"
diag
+ diag "Use --system <list> to specify a comma-separated list of dependencies"
+ diag "to use from the system rather than building them from source, for"
+ diag "example:"
+ diag
+ diag "$0 --system libsqlite3,libpkg-config g++"
+ diag
diag "The script by default installs the following standard build system"
diag "modules:"
diag
@@ -156,6 +164,11 @@ while test $# -ne 0; do
modules="$1"
shift
;;
+ --system)
+ shift
+ system="$1"
+ shift
+ ;;
--private)
private=config.install.private=build2
shift
@@ -338,6 +351,73 @@ for m in $module_list; do
fi
done
+# Convert the comma-separated list of system dependencies into a
+# space-separated list.
+#
+system_list="$(echo "$system" | sed 's/,/ /g')"
+
+# If any dependencies are specified to be used from the system, then specify
+# the respective config.import.*= variables for the bootstrap stage 2 command
+# and for the local or staged build configurations. If the installation is not
+# local, then also specify these dependencies as system for the bpkg-build
+# commands.
+#
+# As a special case, recognize the libpkgconf dependency as a request to force
+# build2 to use that instead of libpkg-config.
+#
+# Note that the build2 driver bootstrapped at stage 1 doesn't read .pc
+# files. Thus, for the bootstrap stage 2 command it is assumed that the
+# headers and libraries of the system dependencies can be found by the
+# compiler and linker at the standard locations. That, however, is not the
+# case for libpkgconf. Thus, if specifying libpkgconf as a system dependency
+# also specify its headers location via, for example, the CPATH environment
+# variable:
+#
+# $ CPATH=/usr/local/include/pkgconf ./build.sh --local --system libpkgconf g++
+#
+bootstrap_system_imports=
+system_imports=
+system_packages=
+
+for d in $system_list; do
+ v="$(echo "$d" | sed 's/[.+-]/_/g')" # Convert to variable name.
+
+ if test "$d" != "libpkgconf"; then
+ si="config.import.$v="
+ else
+ if test -z "$local"; then
+ diag "error: '--system libpkgconf' can only be used for local installation"
+ diag " info: additionally specify --local"
+ exit 1
+ fi
+
+ si="config.build2.libpkgconf=true"
+ fi
+
+ # For now these are the only third-party libraries that are used by the
+ # build system.
+ #
+ if test "$d" = "libpkg-config" -o "$d" = "libpkgconf"; then
+ bootstrap_system_imports="$si"
+ fi
+
+ # Suppress the 'dropping no longer used variable' warnings.
+ #
+ if test -z "$system_imports"; then
+ system_imports="config.config.persist='config.*'@unused=drop"
+ fi
+
+ system_imports="$system_imports $si"
+
+ if test -z "$local"; then
+ if test -n "$system_packages"; then
+ system_packages="$system_packages ?sys:$d"
+ else
+ system_packages="?sys:$d"
+ fi
+ fi
+done
+
# If the installation directory is unspecified, then assume it is /usr/local.
# Otherwise, if it is a relative path, then convert it to an absolute path,
# unless the realpath program is not present on the system or doesn't
@@ -504,7 +584,7 @@ run build2/b-boot --version
# Bootstrap, stage 2.
#
-run build2/b-boot $verbose $jobs config.cxx="$cxx" config.bin.lib=static build2/exe{b}
+run build2/b-boot $verbose $jobs config.cxx="$cxx" config.bin.lib=static $bootstrap_system_imports build2/exe{b}
mv build2/b build2/b-boot
run build2/b-boot --version
@@ -523,7 +603,8 @@ config.bin.rpath="$conf_rpath" \
config.install.root="$idir" \
config.install.sudo="$conf_sudo" \
$conf_exe_affixes \
-$private
+$private \
+$system_imports
# Install toolchain.
#
@@ -584,7 +665,8 @@ config.bin.suffix="$stage_suffix" \
config.bin.rpath="$conf_rpath_stage" \
config.install.root="$idir" \
config.install.data_root=root/stage \
-config.install.sudo="$conf_sudo"
+config.install.sudo="$conf_sudo" \
+$system_imports
run build2/build2/b-boot $verbose $jobs install: build2/ bpkg/
@@ -621,7 +703,7 @@ fi
run "$bpkg_stage" $verbose add "$BUILD2_REPO"
run "$bpkg_stage" $verbose $bpkg_fetch_ops fetch
-run "$bpkg_stage" $verbose $jobs $bpkg_build_ops build --for install --yes --plan= $packages
+run "$bpkg_stage" $verbose $jobs $bpkg_build_ops build --for install --yes --plan= $packages $system_packages
run "$bpkg_stage" $verbose $jobs install --all
run command -v "$b"
@@ -646,7 +728,7 @@ for m in $module_list; do
done
if test -n "$packages"; then
- run "$bpkg" $verbose $jobs $bpkg_build_ops build --for install $packages
+ run "$bpkg" $verbose $jobs $bpkg_build_ops build --for install $packages $system_packages
run "$bpkg" $verbose $jobs install '!config.install.scope=project' --all-pattern=libbuild2-*
fi