external-project: New module to build configure/make projects

This adds an experimental meson module to build projects with other
build systems.

Closes: #4316

9 files changed, 126 insertions, 0 deletions

diff --git a/test cases/common/236 external project/app.c b/test cases/common/236 external project/app.c
new file mode 100644
index 0000000..166f007
--- /dev/null
+++ b/test cases/common/236 external project/app.c
@@ -0,0 +1,7 @@
+#include <libfoo.h>
+
+int main(void)
+{
+    return call_foo() == 42 ? 0 : 1;
+}
+
diff --git a/test cases/common/236 external project/func.c b/test cases/common/236 external project/func.c
new file mode 100644
index 0000000..5e8f933
--- /dev/null
+++ b/test cases/common/236 external project/func.c
@@ -0,0 +1,7 @@
+#include "func.h"
+
+int func(void)
+{
+    return 1;
+}
+
diff --git a/test cases/common/236 external project/func.h b/test cases/common/236 external project/func.h
new file mode 100644
index 0000000..340b82a
--- /dev/null
+++ b/test cases/common/236 external project/func.h
@@ -0,0 +1 @@
+int func(void);
diff --git a/test cases/common/236 external project/libfoo/configure b/test cases/common/236 external project/libfoo/configure
new file mode 100755
index 0000000..a867b48
--- /dev/null
+++ b/test cases/common/236 external project/libfoo/configure
@@ -0,0 +1,44 @@
+#! /bin/sh
+
+srcdir=$(dirname "$0")
+
+for i in "$@"
+do
+case $i in
+    --prefix=*)
+    PREFIX="${i#*=}"
+    shift
+    ;;
+    --libdir=*)
+    LIBDIR="${i#*=}"
+    shift
+    ;;
+    --includedir=*)
+    INCDIR="${i#*=}"
+    shift
+    ;;
+    --libext=*)
+    LIBEXT="${i#*=}"
+    shift
+    ;;
+    *)
+    shift
+    ;;
+esac
+done
+
+DEP_ARGS=$(pkg-config somelib --cflags --libs)
+
+cat > Makefile << EOL
+all: libfoo.$LIBEXT
+
+libfoo.$LIBEXT:
+	$CC "$srcdir/libfoo.c" -shared -fPIC $DEP_ARGS -o \$@
+
+install: libfoo.$LIBEXT
+	mkdir -p "\$(DESTDIR)$LIBDIR";
+	mkdir -p "\$(DESTDIR)$LIBDIR/pkgconfig";
+	mkdir -p "\$(DESTDIR)$INCDIR";
+	cp \$< "\$(DESTDIR)$LIBDIR";
+	cp "$srcdir/libfoo.h" "\$(DESTDIR)$INCDIR";
+EOL
diff --git a/test cases/common/236 external project/libfoo/libfoo.c b/test cases/common/236 external project/libfoo/libfoo.c
new file mode 100644
index 0000000..3f62282
--- /dev/null
+++ b/test cases/common/236 external project/libfoo/libfoo.c
@@ -0,0 +1,8 @@
+#include "libfoo.h"
+
+int func(void);
+
+int call_foo()
+{
+  return func() == 1 ? 42 : 0;
+}
diff --git a/test cases/common/236 external project/libfoo/libfoo.h b/test cases/common/236 external project/libfoo/libfoo.h
new file mode 100644
index 0000000..8981f18
--- /dev/null
+++ b/test cases/common/236 external project/libfoo/libfoo.h
@@ -0,0 +1,3 @@
+#pragma once
+
+int call_foo(void);
diff --git a/test cases/common/236 external project/libfoo/meson.build b/test cases/common/236 external project/libfoo/meson.build
new file mode 100644
index 0000000..941e13f
--- /dev/null
+++ b/test cases/common/236 external project/libfoo/meson.build
@@ -0,0 +1,22 @@
+mod = import('unstable_external_project')
+
+target_system = target_machine.system()
+if target_system in ['windows', 'cygwin']
+  libext = 'dll'
+elif target_system == 'darwin'
+  libext = 'dylib'
+else
+  libext = 'so'
+endif
+
+p = mod.add_project('configure',
+  configure_options : [
+    '--prefix=@PREFIX@',
+    '--libdir=@PREFIX@/@LIBDIR@',
+    '--includedir=@PREFIX@/@INCLUDEDIR@',
+    '--libext=' + libext,
+  ],
+)
+
+libfoo_dep = declare_dependency(link_with : somelib,
+  dependencies : p.dependency('foo'))
diff --git a/test cases/common/236 external project/meson.build b/test cases/common/236 external project/meson.build
new file mode 100644
index 0000000..d1ed797
--- /dev/null
+++ b/test cases/common/236 external project/meson.build
@@ -0,0 +1,27 @@
+project('test external project', 'c')
+
+if not find_program('pkg-config', required: false).found()
+  error('MESON_SKIP_TEST: pkg-config not found')
+endif
+
+if not find_program('make', required : false).found()
+  error('MESON_SKIP_TEST: make not found')
+endif
+
+if host_machine.system() == 'windows'
+  error('MESON_SKIP_TEST: The fake configure script is too dumb to work on Windows')
+endif
+
+if meson.is_cross_build()
+  # CI uses PKG_CONFIG_SYSROOT_DIR which breaks -uninstalled.pc usage.
+  error('MESON_SKIP_TEST: Cross build support is too limited for this test')
+endif
+
+pkg = import('pkgconfig')
+
+somelib = library('somelib', 'func.c')
+pkg.generate(somelib)
+
+subdir('libfoo')
+
+executable('test-find-library', 'app.c', dependencies : libfoo_dep)
diff --git a/test cases/common/236 external project/test.json b/test cases/common/236 external project/test.json
new file mode 100644
index 0000000..4888e87
--- /dev/null
+++ b/test cases/common/236 external project/test.json
@@ -0,0 +1,7 @@
+{
+  "installed": [
+    { "type": "shared_lib",  "file": "usr/lib/foo" },
+    { "type": "file",  "file": "usr/include/libfoo.h" },
+    { "type": "file", "file": "usr/lib/pkgconfig/somelib.pc" }
+  ]
+}