More macOS support for simple_components (#565)

index/li/libgnutls/libgnutls-external.toml

@@ -9,3 +9,8 @@ kind = "system"
 [external.origin."case(distribution)"]
 "..." = []
 "debian|ubuntu" = ["libgnutls28-dev"]
+
+[[external]]
+kind = "version-output"
+version-command = [ "pkg-config", "--modversion", "gnutls" ]
+version-regexp = "([\\d\\.]+)"

index/si/simple_components/simple_components-4.42.0.toml

@@ -10,7 +10,7 @@ maintainers-logins = ["mosteo"]
 project-files = ["components.gpr", "components-connections_server.gpr", "components-connections_server-elv_max_cube.gpr", "components-connections_server-http_server.gpr", "components-connections_server-http_server-sqlite_browser.gpr", "components-connections_server-modbus.gpr", "components-connections_server-mqtt.gpr", "components-connections_server-secure.gpr", "components-connections_server-smtp.gpr", "components-gnutls.gpr", "components-ntp.gpr", "components-odbc.gpr", "components-sqlite.gpr", "strings_edit.gpr", "tables.gpr"]
 
 [[depends-on]]
-gnat = "/=2021 & <11"
+gnat = "<2020 & (<11 | >2000)"
 libgnutls = "^3.5.8"
 unixODBC = "^2.3"
 

index/un/unixodbc/unixodbc-external.toml

@@ -8,3 +8,8 @@ maintainers-logins = ["mosteo"]
 [[external]]
 kind = "system"
 origin = ["unixodbc-dev"]
+
+[[external]]
+kind = "version-output"
+version-command = [ "odbc_config", "--version" ]
+version-regexp = "([\\d\\.]+)"