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e0d904e90b
Library-specific foo-config scripts duplicate very similar logic across
various different projects, and tend to break cross-compiling, multilib
(gcc -m32), Debian/Ubuntu multiarch and so on by only being able to have
one sdl2-config at a time as the first one in the PATH.
The direct replacement is pkg-config(1) or a compatible reimplementation
like pkgconf(1), which relies on each library installing declarative
metadata, like SDL's sdl2.pc (available since at least 2.0.0) and
centralizes the logic into the pkg-config/pkgconf tool.
Most uses of `sdl2-config --foo` can be replaced by something similar
to `${PKG_CONFIG:-pkg-config} --foo sdl2`. Instead of adding a custom
sdl2-config to the PATH or using its --prefix or --exec-prefix options,
users of a custom installation prefix can use any of pkg-config's
non-SDL-specific ways to influence the result, for example setting
PKG_CONFIG_PATH, PKG_CONFIG_SYSROOT_DIR or PKG_CONFIG_LIBDIR environment
variables, or setting the PKG_CONFIG environment variable to point to
a wrapper script.
For Autotools specifically, the replacement for AM_PATH_SDL2 (which
will be officially deprecated in a subsequent commit) is
PKG_CHECK_MODULES.
CMake has its own semi-declarative mechanism for dependency discovery,
"config packages", and the SDL build already installs a config
package. There's a good example of using a config package to discover
SDL in `cmake/test/`.
Meson natively supports pkg-config, and already uses it in preference
to sdl2-config.
Other build systems can run pkg-config instead of sdl2-config,
preferably checking the PKG_CONFIG environment variable first.
https://github.com/ioquake/ioq3 is a good example of a project doing
this correctly.
Helps: #6140, #3516
Signed-off-by: Simon McVittie <smcv@collabora.com>
71 lines
2.1 KiB
Bash
71 lines
2.1 KiB
Bash
#!/bin/sh
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# Get the canonical path of the folder containing this script
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bindir=$(cd -P -- "$(dirname -- "$0")" && printf '%s\n' "$(pwd -P)")
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# Calculate the canonical path of the prefix, relative to the folder of this script
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prefix=$(cd -P -- "$bindir/@bin_prefix_relpath@" && printf '%s\n' "$(pwd -P)")
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exec_prefix=@exec_prefix@
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exec_prefix_set=no
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libdir=@libdir@
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@ENABLE_STATIC_FALSE@usage="\
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@ENABLE_STATIC_FALSE@Usage: $0 [--prefix[=DIR]] [--exec-prefix[=DIR]] [--version] [--cflags] [--libs]"
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@ENABLE_STATIC_TRUE@usage="\
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@ENABLE_STATIC_TRUE@Usage: $0 [--prefix[=DIR]] [--exec-prefix[=DIR]] [--version] [--cflags] [--libs] [--static-libs]"
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if test $# -eq 0; then
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echo "${usage}" 1>&2
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exit 1
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fi
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echo "sdl2-config: This script is deprecated" >&2
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echo "sdl2-config: In Autotools builds, use PKG_CHECK_MODULES([SDL], [sdl2 >= 2.x.y])" >&2
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echo "sdl2-config: In CMake builds, use find_package(SDL2 CONFIG)" >&2
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echo "sdl2-config: In other build systems, look for 'sdl2' with pkg-config(1) or pkgconf(1)" >&2
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while test $# -gt 0; do
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case "$1" in
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-*=*) optarg=`echo "$1" | sed 's/[-_a-zA-Z0-9]*=//'` ;;
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*) optarg= ;;
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esac
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case $1 in
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--prefix=*)
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prefix=$optarg
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if test $exec_prefix_set = no ; then
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exec_prefix=$optarg
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fi
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;;
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--prefix)
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echo $prefix
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;;
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--exec-prefix=*)
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exec_prefix=$optarg
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exec_prefix_set=yes
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;;
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--exec-prefix)
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echo $exec_prefix
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;;
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--version)
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echo @SDL_VERSION@
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;;
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--cflags)
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echo -I@includedir@/SDL2 @SDL_CFLAGS@
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;;
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@ENABLE_SHARED_TRUE@ --libs)
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@ENABLE_SHARED_TRUE@ echo -L@libdir@ @SDL_RLD_FLAGS@ @SDL_LIBS@
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@ENABLE_SHARED_TRUE@ ;;
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@ENABLE_STATIC_TRUE@@ENABLE_SHARED_TRUE@ --static-libs)
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@ENABLE_STATIC_TRUE@@ENABLE_SHARED_FALSE@ --libs|--static-libs)
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@ENABLE_STATIC_TRUE@ sdl_static_libs=$(echo "@SDL_LIBS@ @SDL_STATIC_LIBS@" | sed -E "s#-lSDL2[ $]#$libdir/libSDL2.a #g")
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@ENABLE_STATIC_TRUE@ echo -L@libdir@ $sdl_static_libs
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@ENABLE_STATIC_TRUE@ ;;
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*)
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echo "${usage}" 1>&2
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exit 1
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;;
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esac
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shift
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done
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