Order of linked math libraries derails compilation #2
Description
When I try to install eigensoft on a Ubuntu 14.04 system with gcc 4.8 by following the instructions in INSTALL.ubuntu, installation fails during make install. GCC seems to fail to link math.h functions; the relevant output:
gcc -I/home/chrism/eigensoft/src/smartinclude -g -lm -o convertf convertf.o mcio.o admutils.o /home/chrism/eigensoft/src/smartlib/nicklib.a -Wimplicit
mcio.o: In function `nextmesh':
mcio.c:(.text+0x18c4): undefined reference to `ceil'
...
I can fix the problem by rearranging the location of -lm. If I move -lm to the end of the command (specified on line 95 of the makefile), it completes successfully. I'm not sure I understand why exactly this hack is needed (and I needed to do this on a few of the subsequent gcc commands), but I believe it has something to do with the stricter linking behavior of gcc in newer versions.
The full details of my gcc setup:
$gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.8.5-4ubuntu8~14.04.2' --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libmudflap --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.8.5 (Ubuntu 4.8.5-4ubuntu8~14.04.2) ```