How to compile GTK+ base application with musl-gcc?

0
votes

I compiled this GTK+ Example App with both gcc & musl-gcc. Both of those produced a binary file, but musl-gcc produced binary does not execute correctly & shows bunch of errors.

Note: I installed both musl-libc and libgtk3 dev version.
Note: ldd command logs are allmost same for both gcc & musl-gcc produced binary files.

GTK+ Example App: 

#include <gtk/gtk.h>

static void activate (GtkApplication* app, gpointer user_data) {
   GtkWidget *window;
   window = gtk_application_window_new (app);
   gtk_window_set_title (GTK_WINDOW (window), "Window");
   gtk_window_set_default_size (GTK_WINDOW (window), 600, 600);
   gtk_widget_show_all (window);
}

int main (int argc, char **argv) {
    GtkApplication *app;
    int status;

    app = gtk_application_new ("org.gtk.example", G_APPLICATION_FLAGS_NONE);
    g_signal_connect (app, "activate", G_CALLBACK (activate), NULL);
    status = g_application_run (G_APPLICATION (app), argc, argv);
    g_object_unref (app);

    return status;
}

Comilation Command:

musl-gcc -Wall -g -o main main.c -I/usr/include/gtk-3.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/dbus-1.0 -I/usr/lib/x86_64-linux-gnu/dbus-1.0/include -I/usr/include/gtk-3.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libpng16 -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -L/usr/lib/x86_64-linux-gnu -lgtk-3 -lgdk-3 -lpangocairo-1.0 -lpango-1.0 -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0

musl-gcc produced binary log:

Error loading shared library libgtk-3.so.0: No such file or directory (needed by ./main)
Error loading shared library libgdk-3.so.0: No such file or directory (needed by ./main)
Error loading shared library libpangocairo-1.0.so.0: No such file or directory (needed by ./main)
Error loading shared library libpango-1.0.so.0: No such file or directory (needed by ./main)
Error loading shared library libatk-1.0.so.0: No such file or directory (needed by ./main)
Error loading shared library libcairo-gobject.so.2: No such file or directory (needed by ./main)
Error loading shared library libcairo.so.2: No such file or directory (needed by ./main)
Error loading shared library libgdk_pixbuf-2.0.so.0: No such file or directory (needed by ./main)
Error loading shared library libgio-2.0.so.0: No such file or directory (needed by ./main)
Error loading shared library libgobject-2.0.so.0: No such file or directory (needed by ./main)
Error loading shared library libglib-2.0.so.0: No such file or directory (needed by ./main)
Error relocating ./main: gtk_application_new: symbol not found
Error relocating ./main: gtk_application_window_new: symbol not found
Error relocating ./main: g_application_get_type: symbol not found
Error relocating ./main: g_type_check_instance_cast: symbol not found
Error relocating ./main: g_application_run: symbol not found
Error relocating ./main: gtk_window_set_title: symbol not found
Error relocating ./main: gtk_window_set_default_size: symbol not found
Error relocating ./main: g_signal_connect_data: symbol not found
Error relocating ./main: gtk_widget_show_all: symbol not found
Error relocating ./main: g_object_unref: symbol not found
Error relocating ./main: gtk_window_get_type: symbol not found

ldd command log for gcc produced binary:

linux-vdso.so.1 (0x00007ffe90ff4000)
libgtk-3.so.0 => /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 (0x00007f9f93fec000)
libgio-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 (0x00007f9f93c4d000)
libgobject-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 (0x00007f9f939f9000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f9f93608000)
libgdk-3.so.0 => /usr/lib/x86_64-linux-gnu/libgdk-3.so.0 (0x00007f9f93312000)
libgmodule-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgmodule-2.0.so.0 (0x00007f9f9310e000)
libpangocairo-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libpangocairo-1.0.so.0 (0x00007f9f92f01000)
libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007f9f92bc9000)
libXi.so.6 => /usr/lib/x86_64-linux-gnu/libXi.so.6 (0x00007f9f929b9000)
libXfixes.so.3 => /usr/lib/x86_64-linux-gnu/libXfixes.so.3 (0x00007f9f927b3000)
libcairo-gobject.so.2 => /usr/lib/x86_64-linux-gnu/libcairo-gobject.so.2 (0x00007f9f925aa000)
libcairo.so.2 => /usr/lib/x86_64-linux-gnu/libcairo.so.2 (0x00007f9f9228d000)
libgdk_pixbuf-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0 (0x00007f9f92069000)
libatk-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libatk-1.0.so.0 (0x00007f9f91e43000)
libatk-bridge-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libatk-bridge-2.0.so.0 (0x00007f9f91c12000)
libepoxy.so.0 => /usr/lib/x86_64-linux-gnu/libepoxy.so.0 (0x00007f9f91911000)
libpangoft2-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libpangoft2-1.0.so.0 (0x00007f9f916fb000)
libpango-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0 (0x00007f9f914ae000)
libfontconfig.so.1 => /usr/lib/x86_64-linux-gnu/libfontconfig.so.1 (0x00007f9f91269000)
libglib-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f9f90f53000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f9f90bb5000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f9f90996000)
libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f9f90779000)
libselinux.so.1 => /lib/x86_64-linux-gnu/libselinux.so.1 (0x00007f9f90551000)
libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 (0x00007f9f90336000)
libmount.so.1 => /lib/x86_64-linux-gnu/libmount.so.1 (0x00007f9f900e2000)
libffi.so.6 => /usr/lib/x86_64-linux-gnu/libffi.so.6 (0x00007f9f8feda000)
/lib64/ld-linux-x86-64.so.2 (0x00007f9f94af6000)
libXinerama.so.1 => /usr/lib/x86_64-linux-gnu/libXinerama.so.1 (0x00007f9f8fcd7000)
libXrandr.so.2 => /usr/lib/x86_64-linux-gnu/libXrandr.so.2 (0x00007f9f8facc000)
libXcursor.so.1 => /usr/lib/x86_64-linux-gnu/libXcursor.so.1 (0x00007f9f8f8c2000)
libXcomposite.so.1 => /usr/lib/x86_64-linux-gnu/libXcomposite.so.1 (0x00007f9f8f6bf000)
libXdamage.so.1 => /usr/lib/x86_64-linux-gnu/libXdamage.so.1 (0x00007f9f8f4bc000)
libxkbcommon.so.0 => /usr/lib/x86_64-linux-gnu/libxkbcommon.so.0 (0x00007f9f8f27d000)
libwayland-cursor.so.0 => /usr/lib/x86_64-linux-gnu/libwayland-cursor.so.0 (0x00007f9f8f075000)
libwayland-egl.so.1 => /usr/lib/x86_64-linux-gnu/libwayland-egl.so.1 (0x00007f9f8ee73000)
libwayland-client.so.0 => /usr/lib/x86_64-linux-gnu/libwayland-client.so.0 (0x00007f9f8ec64000)
libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6 (0x00007f9f8ea52000)
librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f9f8e84a000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f9f8e646000)
libfreetype.so.6 => /usr/lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007f9f8e392000)
libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f9f8e16a000)
libpixman-1.so.0 => /usr/lib/x86_64-linux-gnu/libpixman-1.so.0 (0x00007f9f8dec5000)
libpng16.so.16 => /usr/lib/x86_64-linux-gnu/libpng16.so.16 (0x00007f9f8dc93000)
libxcb-shm.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-shm.so.0 (0x00007f9f8da90000)
libxcb-render.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-render.so.0 (0x00007f9f8d883000)
libXrender.so.1 => /usr/lib/x86_64-linux-gnu/libXrender.so.1 (0x00007f9f8d679000)
libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007f9f8d42c000)
libatspi.so.0 => /usr/lib/x86_64-linux-gnu/libatspi.so.0 (0x00007f9f8d1fc000)
libharfbuzz.so.0 => /usr/lib/x86_64-linux-gnu/libharfbuzz.so.0 (0x00007f9f8cf5e000)
libthai.so.0 => /usr/lib/x86_64-linux-gnu/libthai.so.0 (0x00007f9f8cd55000)
libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f9f8cb23000)
libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f9f8c8b1000)
libblkid.so.1 => /lib/x86_64-linux-gnu/libblkid.so.1 (0x00007f9f8c664000)
libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007f9f8c460000)
libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f9f8c25a000)
libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007f9f8bfd6000)
libgraphite2.so.3 => /usr/lib/x86_64-linux-gnu/libgraphite2.so.3 (0x00007f9f8bda9000)
libdatrie.so.1 => /usr/lib/x86_64-linux-gnu/libdatrie.so.1 (0x00007f9f8bba2000)
libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007f9f8b99b000)
libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007f9f8b786000)
liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f9f8b560000)
liblz4.so.1 => /usr/lib/x86_64-linux-gnu/liblz4.so.1 (0x00007f9f8b344000)
libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007f9f8b029000)
libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007f9f8ae14000)

ldd command log for musl-gcc produced binary:

linux-vdso.so.1 (0x00007ffeaf2ca000)
libgtk-3.so.0 => /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 (0x00007f03c1a9f000)
libgdk-3.so.0 => /usr/lib/x86_64-linux-gnu/libgdk-3.so.0 (0x00007f03c17a9000)
libpangocairo-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libpangocairo-1.0.so.0 (0x00007f03c159c000)
libpango-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0 (0x00007f03c134f000)
libatk-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libatk-1.0.so.0 (0x00007f03c1129000)
libcairo-gobject.so.2 => /usr/lib/x86_64-linux-gnu/libcairo-gobject.so.2 (0x00007f03c0f20000)
libcairo.so.2 => /usr/lib/x86_64-linux-gnu/libcairo.so.2 (0x00007f03c0c03000)
libgdk_pixbuf-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0 (0x00007f03c09df000)
libgio-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 (0x00007f03c0640000)
libgobject-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 (0x00007f03c03ec000)
libglib-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f03c00d6000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f03bfce5000)
libgmodule-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgmodule-2.0.so.0 (0x00007f03bfae1000)
libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007f03bf7a9000)
libXi.so.6 => /usr/lib/x86_64-linux-gnu/libXi.so.6 (0x00007f03bf599000)
libXfixes.so.3 => /usr/lib/x86_64-linux-gnu/libXfixes.so.3 (0x00007f03bf393000)
libatk-bridge-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libatk-bridge-2.0.so.0 (0x00007f03bf162000)
libepoxy.so.0 => /usr/lib/x86_64-linux-gnu/libepoxy.so.0 (0x00007f03bee61000)
libpangoft2-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libpangoft2-1.0.so.0 (0x00007f03bec4b000)
libfontconfig.so.1 => /usr/lib/x86_64-linux-gnu/libfontconfig.so.1 (0x00007f03bea06000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f03be668000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f03be449000)
libXinerama.so.1 => /usr/lib/x86_64-linux-gnu/libXinerama.so.1 (0x00007f03be246000)
libXrandr.so.2 => /usr/lib/x86_64-linux-gnu/libXrandr.so.2 (0x00007f03be03b000)
libXcursor.so.1 => /usr/lib/x86_64-linux-gnu/libXcursor.so.1 (0x00007f03bde31000)
libXcomposite.so.1 => /usr/lib/x86_64-linux-gnu/libXcomposite.so.1 (0x00007f03bdc2e000)
libXdamage.so.1 => /usr/lib/x86_64-linux-gnu/libXdamage.so.1 (0x00007f03bda2b000)
libxkbcommon.so.0 => /usr/lib/x86_64-linux-gnu/libxkbcommon.so.0 (0x00007f03bd7ec000)
libwayland-cursor.so.0 => /usr/lib/x86_64-linux-gnu/libwayland-cursor.so.0 (0x00007f03bd5e4000)
libwayland-egl.so.1 => /usr/lib/x86_64-linux-gnu/libwayland-egl.so.1 (0x00007f03bd3e2000)
libwayland-client.so.0 => /usr/lib/x86_64-linux-gnu/libwayland-client.so.0 (0x00007f03bd1d3000)
libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6 (0x00007f03bcfc1000)
librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f03bcdb9000)
libfreetype.so.6 => /usr/lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007f03bcb05000)
libthai.so.0 => /usr/lib/x86_64-linux-gnu/libthai.so.0 (0x00007f03bc8fc000)
libpixman-1.so.0 => /usr/lib/x86_64-linux-gnu/libpixman-1.so.0 (0x00007f03bc657000)
libpng16.so.16 => /usr/lib/x86_64-linux-gnu/libpng16.so.16 (0x00007f03bc425000)
libxcb-shm.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-shm.so.0 (0x00007f03bc222000)
libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f03bbffa000)
libxcb-render.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-render.so.0 (0x00007f03bbded000)
libXrender.so.1 => /usr/lib/x86_64-linux-gnu/libXrender.so.1 (0x00007f03bbbe3000)
libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f03bb9c6000)
libselinux.so.1 => /lib/x86_64-linux-gnu/libselinux.so.1 (0x00007f03bb79e000)
libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 (0x00007f03bb583000)
libmount.so.1 => /lib/x86_64-linux-gnu/libmount.so.1 (0x00007f03bb32f000)
libffi.so.6 => /usr/lib/x86_64-linux-gnu/libffi.so.6 (0x00007f03bb127000)
libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f03baeb5000)
/lib/ld-musl-x86_64.so.1 => /lib64/ld-linux-x86-64.so.2 (0x00007f03c25a9000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f03bacb1000)
libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007f03baa64000)
libatspi.so.0 => /usr/lib/x86_64-linux-gnu/libatspi.so.0 (0x00007f03ba834000)
libharfbuzz.so.0 => /usr/lib/x86_64-linux-gnu/libharfbuzz.so.0 (0x00007f03ba596000)
libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f03ba364000)
libdatrie.so.1 => /usr/lib/x86_64-linux-gnu/libdatrie.so.1 (0x00007f03ba15d000)
libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007f03b9f59000)
libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f03b9d53000)
libblkid.so.1 => /lib/x86_64-linux-gnu/libblkid.so.1 (0x00007f03b9b06000)
libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007f03b9882000)
libgraphite2.so.3 => /usr/lib/x86_64-linux-gnu/libgraphite2.so.3 (0x00007f03b9655000)
libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007f03b9440000)
libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007f03b9239000)
liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f03b9013000)
liblz4.so.1 => /usr/lib/x86_64-linux-gnu/liblz4.so.1 (0x00007f03b8df7000)
libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007f03b8adc000)
libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007f03b88c7000)
1
gccgtkgtk3gcc7musl

1 Answers

0
votes

You should not pass the compilation arguments by hand. This is what pkg-config is made for, and what is advised in the Compiling GTK+ Applications section of the docs.

So you should do instead:

musl-gcc -g -Wall $(pkg-config --cflags gtk+-3.0) main.c -o main $(pkg-config --libs gtk+-3.0)

Search for ../etc/ld-musl-$(ARCH).path Musl manual.

Here's also an extract from the FAQ:

Where is ldd?

musl’s dynamic linker comes with ldd functionality built in. Just create a symlink from ld-musl-$ARCH.so to /bin/ldd. If the dynamic linker was started as “ldd”, it will detect that and print the appropriate DSO information.

Now it seems musl has a different ldconfig that doesn't use your standard paths, which would explain your problem. You could use the -L option of gcc to workaround that and specify in which directories to search for libraries, but a better way would be to learn how the linker and musl work together, so that the compiler looks at the right places. ldd will be of no use, it's using the linker config for the libc, not for musl.