forked from mirrors/0ad
Ralph Sennhauser
c2cc762616
Allow override PKG_CONFIG_PATH via env, making it possible to easily inject alternative library builds for testing or bisecting. This was only possible when the premake script didn't override it which it unconditionally did on macos. Also don't expose the variable holding the path directly but offer a function to append to the path instead. Ref: #8135 Signed-off-by: Ralph Sennhauser <ralph.sennhauser@gmail.com>
117 lines
3.1 KiB
Lua
117 lines
3.1 KiB
Lua
local m = {}
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m._VERSION = "1.4.0-dev"
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m.static_link_libs = false
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local pkg_config_command = "pkg-config"
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if os.getenv("PKG_CONFIG") then
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pkg_config_command = os.getenv("PKG_CONFIG")
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end
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local pkg_config_path = ""
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if os.getenv("PKG_CONFIG_PATH") then
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pkg_config_path = os.getenv("PKG_CONFIG_PATH")
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end
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local function os_capture(cmd)
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return io.popen(cmd, 'r'):read('*a'):gsub("\n", " ")
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end
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local function parse_pkg_config_includes(lib, alternative_cmd, alternative_flags)
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local result
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if not alternative_cmd then
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result = os_capture("PKG_CONFIG_PATH=" .. pkg_config_path .. " " .. pkg_config_command .. " --cflags " .. lib)
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else
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if not alternative_flags then
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result = os_capture(alternative_cmd.." --cflags")
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else
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result = os_capture(alternative_cmd.." "..alternative_flags)
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end
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end
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-- Small trick: delete the space after -include so that we can detect
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-- which files have to be force-included without difficulty.
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result = result:gsub("%-include +(%g+)", "-include%1")
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result = result:gsub("%-isystem +(%g+)", "-isystem%1")
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local dirs = {}
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local files = {}
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local options = {}
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for w in string.gmatch(result, "[^' ']+") do
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if string.sub(w,1,2) == "-I" then
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table.insert(dirs, string.sub(w,3))
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elseif string.sub(w,1,8) == "-isystem" then
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table.insert(dirs, string.sub(w,9))
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elseif string.sub(w,1,8) == "-include" then
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table.insert(files, string.sub(w,9))
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else
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table.insert(options, w)
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end
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end
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return dirs, files, options
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end
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function m.add_pkg_config_path(path)
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if pkg_config_path == "" then
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pkg_config_path = path
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else
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pkg_config_path = pkg_config_path .. ":" .. path
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end
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end
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function m.add_includes(lib, alternative_cmd, alternative_flags)
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local dirs, files, options = parse_pkg_config_includes(lib, alternative_cmd, alternative_flags)
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externalincludedirs(dirs)
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forceincludes(files)
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buildoptions(options)
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end
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function m.add_includes_after(lib, alternative_cmd, alternative_flags)
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local dirs, files, options = parse_pkg_config_includes(lib, alternative_cmd, alternative_flags)
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includedirsafter(dirs)
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forceincludes(files)
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buildoptions(options)
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end
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function m.add_links(lib, alternative_cmd, alternative_flags)
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local result
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if not alternative_cmd then
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local static = m.static_link_libs and " --static " or ""
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result = os_capture("PKG_CONFIG_PATH=" .. pkg_config_path .. " " .. pkg_config_command .. " --libs " .. static .. lib)
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else
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if not alternative_flags then
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result = os_capture(alternative_cmd.." --libs")
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else
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result = os_capture(alternative_cmd.." "..alternative_flags)
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end
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end
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-- On OSX, wx-config outputs "-framework foo" instead of "-Wl,-framework,foo"
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-- which doesn't fare well with the splitting into libs, libdirs and options
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-- we perform afterwards.
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result = result:gsub("%-framework +(%g+)", "-Wl,-framework,%1")
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local libs = {}
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local dirs = {}
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local options = {}
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for w in string.gmatch(result, "[^' ']+") do
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if string.sub(w,1,2) == "-l" then
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table.insert(libs, string.sub(w,3))
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elseif string.sub(w,1,2) == "-L" then
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table.insert(dirs, string.sub(w,3))
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else
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table.insert(options, w)
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end
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end
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links(libs)
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libdirs(dirs)
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linkoptions(options)
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end
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return m
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