By default use <prefix> relative paths when installing #470
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This allows the config file to keep working when it is installed to a non-standard location from a make DESTDIR=<location> install
zorun
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Jul 7, 2016
…gconfig paths Recent commit 911e2b0 ("By default use <prefix> relative paths when installing") introduced relative install paths in CMake. But this interacts badly with commit e6f1cff from a year ago: now, the paths in `pkgconfig/jsoncpp.pc` are relative, which is incorrect. Before 911e2b0 (1.7.2 on Archlinux), this was correct: $ head -4 /usr/lib/pkgconfig/jsoncpp.pc prefix=/usr exec_prefix=${prefix} libdir=/usr/lib includedir=/usr/include After 911e2b0 (1.7.3 on Archlinux), this is now incorrect: $ head -4 /usr/lib/pkgconfig/jsoncpp.pc prefix=/usr exec_prefix=${prefix} libdir=lib includedir=include This change causes hard-to-debug compilation errors for projects that depend on jsoncpp, for instance: CXXLD libring.la /tmp/ring-daemon/src/ring-daemon/src/../libtool: line 7486: cd: lib: No such file or directory libtool: error: cannot determine absolute directory name of 'lib' make[3]: *** [Makefile:679: libring.la] Error 1 This is because jsoncpp contributes `-Llib -ljsoncpp` to the LDFLAGS, via the pkg-config machinery. Notice the relative path in `-Llib`. To fix this, simply revert commit e6f1cff ("Fix custom includedir & libdir substitution in pkg-config"). The change in 911e2b0 should have the same effect. See open-source-parsers#279, open-source-parsers#470 for references.
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This allows the jsoncppConfig file to keep working
when it is installed to a non-standard location
from a make DESTDIR= install