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<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Package: highs</div>
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Version: 1.12.0+ds1-3</div>
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Severity: important</div>
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Tags: patch</div>
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<br>
</div>
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The installed highs.pc pkg-config file contains incorrect libdir and</div>
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includedir paths with a duplicated "usr" prefix, causing compilation and</div>
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linking failures for any project using pkg-config to locate HiGHS.</div>
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<br>
</div>
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Current (broken) highs.pc:</div>
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<br>
</div>
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prefix=/usr</div>
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libdir=/usr/usr/lib/x86_64-linux-gnu</div>
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includedir=/usr/usr/include/highs</div>
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<br>
</div>
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The correct paths should be:</div>
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</div>
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libdir=/usr/lib/x86_64-linux-gnu</div>
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includedir=/usr/include/highs</div>
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<br>
</div>
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Impact: Any software using "pkg-config --cflags highs" or</div>
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"pkg-config --libs highs" gets non-existent paths and fails to</div>
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compile or link.</div>
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<br>
</div>
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Root cause:</div>
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<br>
</div>
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In debian/rules, CMAKE_INSTALL_PREFIX is set to the relative path "usr",</div>
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while CMAKE_INSTALL_LIBDIR and CMAKE_INSTALL_INCLUDEDIR are also set to</div>
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paths starting with "usr/":</div>
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<br>
</div>
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TARGET_PREFIX = usr</div>
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TARGET_LIBDIR = $(TARGET_PREFIX)/lib/$(DEB_HOST_MULTIARCH)</div>
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<br>
</div>
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SKBUILD_ARGS = \</div>
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-C skbuild.cmake.args=-DCMAKE_INSTALL_PREFIX=$(TARGET_PREFIX) \</div>
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-C skbuild.cmake.args=-DCMAKE_INSTALL_LIBDIR=$(TARGET_LIBDIR) \</div>
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-C skbuild.cmake.args=-DCMAKE_INSTALL_INCLUDEDIR=$(TARGET_PREFIX)/include</div>
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<br>
</div>
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The upstream highs.pc.in template uses CMAKE_INSTALL_FULL_LIBDIR and</div>
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CMAKE_INSTALL_FULL_INCLUDEDIR:</div>
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<br>
</div>
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prefix=@CMAKE_INSTALL_PREFIX@</div>
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libdir=@CMAKE_INSTALL_FULL_LIBDIR@</div>
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includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@/highs</div>
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</div>
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CMake's GNUInstallDirs computes the FULL_ variants by prepending the</div>
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prefix to relative paths. Since both the prefix ("usr") and the dir</div>
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variables ("usr/lib/...") are relative, CMake concatenates them:</div>
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</div>
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CMAKE_INSTALL_FULL_LIBDIR = usr/usr/lib/x86_64-linux-gnu</div>
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CMAKE_INSTALL_FULL_INCLUDEDIR = usr/usr/include</div>
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<br>
</div>
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The post-build sed command only strips $(CURDIR) but does not fix the</div>
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double "usr" issue:</div>
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</div>
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sed -i "s|$(CURDIR)||g" $(TARGET_LIBDIR)/pkgconfig/highs.pc</div>
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<br>
</div>
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Suggested fix:</div>
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<br>
</div>
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Pass CMAKE_INSTALL_LIBDIR and CMAKE_INSTALL_INCLUDEDIR as paths relative</div>
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to the prefix (without the leading "usr/"):</div>
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</div>
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-C skbuild.cmake.args=-DCMAKE_INSTALL_LIBDIR=lib/$(DEB_HOST_MULTIARCH) \</div>
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-C skbuild.cmake.args=-DCMAKE_INSTALL_INCLUDEDIR=include</div>
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<br>
</div>
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Since TARGET_LIBDIR is also used elsewhere in debian/rules (BUILD_LIBDIR,</div>
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execute_after_dh_auto_install, dh_link), a safer approach is to introduce</div>
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a separate variable for the cmake args:</div>
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</div>
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TARGET_PREFIX = usr</div>
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TARGET_LIBDIR = $(TARGET_PREFIX)/lib/$(DEB_HOST_MULTIARCH)</div>
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CMAKE_LIBDIR = lib/$(DEB_HOST_MULTIARCH)</div>
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CMAKE_INCLUDEDIR = include</div>
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<br>
</div>
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And use CMAKE_LIBDIR / CMAKE_INCLUDEDIR only in the skbuild cmake args.</div>
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<br>
</div>
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How to reproduce:</div>
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<br>
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apt install libhighs-dev</div>
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cat /usr/lib/x86_64-linux-gnu/pkgconfig/highs.pc</div>
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# Observe libdir=/usr/usr/lib/... and includedir=/usr/usr/include/...</div>
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pkg-config --cflags highs</div>
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# Returns -I/usr/usr/include/highs (wrong path)</div>
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</div>
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Both 1.12.0+ds1-2 (Ubuntu resolute) and 1.12.0+ds1-3 (Debian sid)</div>
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are affected.</div>
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<br>
</div>
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<br>
</div>
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-- System Information:</div>
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Debian Release: forky/sid</div>
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APT prefers resolute</div>
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APT policy: (500, 'resolute')</div>
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Architecture: amd64 (x86_64)</div>
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<br>
</div>
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Kernel: Linux 6.6.87.2-microsoft-standard-WSL2 (SMP w/24 CPU threads; PREEMPT)</div>
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Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set</div>
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Shell: /bin/sh linked to /usr/bin/dash</div>
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Init: systemd (via /run/systemd/system)</div>
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