Arch Linux User Repository

The default makepkg.conf options (see https://gitlab.archlinux.org/archlinux/packaging/packages/pacman/-/blob/main/makepkg.conf?ref_type=heads#L98) have strip set, which stripped all symbols from the static and shared libraries I installed and prevented me from consuming the Halide::Generator CMake target.

[1/5] Linking CXX executable apriltag_gen
FAILED: [code=1] apriltag_gen 
: && /usr/lib/ccache/bin/c++ -O3 -DNDEBUG -march=native -mtune=native -ffast-math -Wl,--dependency-file=CMakeFiles/apriltag_gen.dir/link.d CMakeFiles/apriltag_gen.dir/src/apriltag_halide_generator.cpp.o -o apriltag_gen  -Wl,--push-state,--whole-archive  /usr/lib/libHalide_GenGen.a  -Wl,--pop-state  /usr/lib/libHalide.so.21.0.0  -ldl && :
mold: fatal: GenGen.cpp.o: not claimed by the LTO plugin; please make sure you are using the same compiler of the same version for all object files
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

Symbol list:

[tav@myriad ~]$ nm /usr/lib/libHalide_GenGen.a /usr/lib/libHalide.so

/usr/lib/libHalide_GenGen.a:

GenGen.cpp.o:
0000000000000001 C __gnu_lto_slim

/usr/lib/libHalide.so:
nm: /usr/lib/libHalide.so: no symbols

Adding an override for strip fixed my linking issue.

diff --git a/PKGBUILD b/PKGBUILD
index 34a3974..45a9493 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -13,6 +13,7 @@ optdepends=(
   'emscripten: WebAssembly backend.'
   'libpng: PNG support in the Image IO Utility.'
   'libjpeg: JPEG support in the Image IO Utility.')
+options=('!strip' 'staticlibs')
 source=("https://github.com/halide/Halide/archive/refs/tags/v$pkgver.tar.gz")
 sha256sums=('aa6b6f5e89709ca6bc754ce72b8b13b2abce0d6b001cb2516b1c6f518f910141')

Symbol list:

[tav@myriad ~]$ nm /usr/lib/libHalide_GenGen.a /usr/lib/libHalide.so

/usr/lib/libHalide_GenGen.a:

GenGen.cpp.o:
00000000 T main
         U _ZN6Halide8Internal20generate_filter_mainEiPPc

/usr/lib/libHalide.so:
0000000000db5168 d $tlsld
                 U abort
0000000000dbbf00 d abort$got
<...snip...>

Note that !staticlibs is also set by default, which may or may not be intended. It didn't seem to affect the final package though.

Add tarball checksums in PKGBUILD, please.

diff --git a/PKGBUILD b/PKGBUILD
index a81e3d4..2357efb 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -14,7 +14,7 @@ optdepends=(
   'libpng: PNG support in the Image IO Utility.'
   'libjpeg: JPEG support in the Image IO Utility.')
 source=("https://github.com/halide/Halide/archive/refs/tags/v$pkgver.tar.gz")
-md5sums=('SKIP')
+sha256sums=('1176b42a3e2374ab38555d9316c78e39b157044b5a8e765c748bf3afd2edb351')

 build() {
   cmake -B build -S "Halide-$pkgver" \

@shirok1 It seems to me POSITION_INDEPENDENT_CODE is already set to ON in the cmake file, so I am not sure how that would help. See CMakeLists.txt. What is the issue/error exactly?

Mine have same PIC issue too. I suggest adding -DCMAKE_POSITION_INDEPENDENT_CODE=ON to PKGBUILD instead of changing $CXXFLAGS manually.

Thank you, is fixed now.

@carlosal1015 I updated the package to 14.0.0 and it seems to build fine. Can you try this new build?

Started using tarballs instead. The library is built with PIC by default, check the generated ninja build file. So it is unclear why that would make a difference for you. Perhaps it is something in your environment?

please consider using tarball links like https://github.com/halide/Halide/archive/refs/tags/v13.0.4.tar.gz and add these lines to build():

CFLAGS="$CFLAGS -fPIC"
CXXFLAGS="$CXXFLAGS -fPIC"

my ld can't link without -fPIC