[SOLVED] qtractor compile error with current (15.0 RC1)

ludist · 11-23-2021, 03:33 PM

Hello there

I start to migrating to slackware-15.0 RC1 and checking some software. I can't compile qtractor-0.9.24

error is:

Code:

/usr/bin/ld: .obj/qtractorPlugin.o: undefined reference to symbol 'dlclose@@GLIBC_2.2.5'
/usr/bin/ld: /lib64/libdl.so.2: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile:923: qtractor] Error 1

used this SlackBuild.

Added qt5 dir (success) and tried to add -ldl (fail).

Code:

CMAKE_DL_LIBS="-ldl" \ # 1st attempt
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  LIBS=-ldl \           # 2nd attempt
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --mandir=/usr/man \
  --with-qt=/usr/lib${LIBDIRSUFFIX}/qt5 \ # success
  --build=$ARCH-slackware-linux

Dependencies are installed (jack and ladspa_sdk). But the problem is somewhere else.

Maybe useful links CMAKE_DL_LIBS, set.

Funny thing. After SlackBuild fails I edited `src/Makefile` (unavailable before `make`) to add after `-lpthread` the `-ldl` and qtractor executable is created!

But what is the right option for a proper SlackBuild?

brobr · 11-23-2021, 06:06 PM

fwiw qtractor-0.9.23 from ponce's SBo-git builds fine on RC2

see also: https://stackoverflow.com/questions/...ssing#54019624

ludist · 11-23-2021, 11:35 PM

Ponce SBO-git is obsolete

In reality Ponce current Slackbuild is the same with SBos and don't compile here.

Maybe I have wrong ENV values?

This seems to work. Will re-check in a few hours.

Code:

mkdir build; cd build
cmake ../

ponce · 11-24-2021, 12:34 AM

I haven't tried the switch to cmake but

Code:

--- ./qtractor.SlackBuild.orig	2021-11-23 07:03:23.260480000 +0100
+++ ./qtractor.SlackBuild	2021-11-24 07:32:38.858765000 +0100
@@ -79,6 +79,7 @@
  \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
   -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
 
+LDFLAGS="-L/lib$LIBDIRSUFFIX -L/usr/lib$LIBDIRSUFFIX -ldl" \
 CFLAGS="$SLKCFLAGS" \
 CXXFLAGS="$SLKCFLAGS" \
 ./configure \

I'll fix it in the repository, thanks for the report.

ludist · 11-24-2021, 07:39 AM

@ponce thank you.

With your flags (to my surprise) `--with-qt=/usr/lib${LIBDIRSUFFIX}/qt5` is not needed (!).

cmake also works. Here the added commands. If you want a PR inform me.

Code:

 -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

mkdir build
cd build
cmake ../ \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_BUILD_TYPE=Release \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DCMAKE_INSTALL_MANDIR="man" \
    -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON \
    -DBUILD_SHARED_LIBS:BOOL=ON

make install DESTDIR=$PKG

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

find $PKG/usr/man -type f -exec gzip -9 {} \;
for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done

cd $TMP/$PRGNAM-$VERSION