project('invercargill-sql', ['vala', 'c'], version: '0.1')

# Required dependencies
glib_dep = dependency('glib-2.0')
gobject_dep = dependency('gobject-2.0')
invercargill_dep = dependency('invercargill-1')
sqlite_dep = dependency('sqlite3')
libpq_dep = dependency('libpq')

# libpq: Vala's libpq.vapi emits "#include <postgresql/libpq-fe.h>" in the
# generated C, but distros disagree on the header location (Debian keeps
# them under /usr/include/postgresql, Fedora-style layouts install them
# flat in /usr/include). Probe with the C compiler and, when the flat
# layout is found, create a compat include dir with a postgresql/ symlink
# tree in the build directory.
cc = meson.get_compiler('c')
libpq_compat_args = []
if not cc.has_header('postgresql/libpq-fe.h', dependencies: libpq_dep)
    if not cc.has_header('libpq-fe.h', dependencies: libpq_dep)
        error('libpq headers not found; install libpq-devel/postgresql-devel')
    endif
    pg_includedir = run_command(
        find_program('pkg-config'), '--variable=includedir', 'libpq',
        check: true,
    ).stdout().strip()
    pg_compat = meson.current_build_dir() / 'pg-compat/postgresql'
    run_command('mkdir', '-p', pg_compat, check: true)
    foreach h : ['libpq-fe.h', 'libpq-events.h']
        run_command('ln', '-sfn', pg_includedir / h, pg_compat / h, check: true)
    endforeach
    run_command('ln', '-sfn', pg_includedir / 'libpq', pg_compat / 'libpq', check: true)
    libpq_compat_args = ['-I' + meson.current_build_dir() / 'pg-compat']
endif

# Subdirectories
subdir('src')
subdir('examples')