Compile error on Ubuntu 18.04

[cmbasnett]

I get an error when trying to compile the code as described on Ubuntu 18.04.

It appears to be an issue with linking the math libraries.

gcc -m32 -Wint-to-pointer-cast  -lm -pthread build/build-i386/bmpread.o build/build-i386/cmdlib.o build/build-i386/mathlib.o build/build-i386/scriplib.o build/build-i386/studiomdl.o build/build-i386/trilib.o build/build-i386/tristrip.o build/build-i386/write.o  -o build/bin-i386/studiomdl
build/build-i386/cmdlib.o: In function `Q_getwd':
cmdlib.c:(.text+0x488): warning: the `getwd' function is dangerous and should not be used.
build/build-i386/mathlib.o: In function `VectorLength':
mathlib.c:(.text+0x61): undefined reference to `sqrt'
build/build-i386/mathlib.o: In function `Q_rint':
mathlib.c:(.text+0x101): undefined reference to `floor'
build/build-i386/mathlib.o: In function `VectorNormalize':
mathlib.c:(.text+0x408): undefined reference to `sqrt'
build/build-i386/mathlib.o: In function `AngleMatrix':
mathlib.c:(.text+0x5cf): undefined reference to `sin'
mathlib.c:(.text+0x5e7): undefined reference to `cos'
mathlib.c:(.text+0x612): undefined reference to `sin'
mathlib.c:(.text+0x62a): undefined reference to `cos'
mathlib.c:(.text+0x652): undefined reference to `sin'
mathlib.c:(.text+0x66a): undefined reference to `cos'
build/build-i386/mathlib.o: In function `AngleIMatrix':
mathlib.c:(.text+0x775): undefined reference to `sin'
mathlib.c:(.text+0x78d): undefined reference to `cos'
mathlib.c:(.text+0x7b8): undefined reference to `sin'
mathlib.c:(.text+0x7d0): undefined reference to `cos'
mathlib.c:(.text+0x7f8): undefined reference to `sin'
mathlib.c:(.text+0x810): undefined reference to `cos'
build/build-i386/mathlib.o: In function `AngleQuaternion':
mathlib.c:(.text+0xebc): undefined reference to `sin'
mathlib.c:(.text+0xed4): undefined reference to `cos'
mathlib.c:(.text+0xeff): undefined reference to `sin'
mathlib.c:(.text+0xf17): undefined reference to `cos'
mathlib.c:(.text+0xf3f): undefined reference to `sin'
mathlib.c:(.text+0xf57): undefined reference to `cos'
build/build-i386/mathlib.o: In function `QuaternionSlerp':
mathlib.c:(.text+0x136e): undefined reference to `acos'
mathlib.c:(.text+0x1386): undefined reference to `sin'
mathlib.c:(.text+0x13a7): undefined reference to `sin'
mathlib.c:(.text+0x13c7): undefined reference to `sin'
mathlib.c:(.text+0x1497): undefined reference to `sin'
mathlib.c:(.text+0x14bf): undefined reference to `sin'
build/build-i386/studiomdl.o: In function `TextureCoordRanges':
studiomdl.c:(.text+0x57eb): undefined reference to `fmin'
studiomdl.c:(.text+0x581b): undefined reference to `fmin'
studiomdl.c:(.text+0x5866): undefined reference to `fmax'
studiomdl.c:(.text+0x5896): undefined reference to `fmax'
studiomdl.c:(.text+0x5a56): undefined reference to `fmin'
studiomdl.c:(.text+0x5a86): undefined reference to `fmin'
studiomdl.c:(.text+0x5ad1): undefined reference to `fmax'
studiomdl.c:(.text+0x5b01): undefined reference to `fmax'
studiomdl.c:(.text+0x5f88): undefined reference to `fmax'
studiomdl.c:(.text+0x5fe0): undefined reference to `fmin'
studiomdl.c:(.text+0x6038): undefined reference to `fmax'
studiomdl.c:(.text+0x6090): undefined reference to `fmin'
build/build-i386/studiomdl.o: In function `ResizeTexture':
studiomdl.c:(.text+0x65d9): undefined reference to `pow'
build/build-i386/studiomdl.o: In function `Grab_Animation':
studiomdl.c:(.text+0x8ce3): undefined reference to `cos'
studiomdl.c:(.text+0x8d03): undefined reference to `sin'
build/build-i386/studiomdl.o: In function `.L944':
studiomdl.c:(.text+0xc0c3): undefined reference to `cos'
collect2: error: ld returned 1 exit status
Makefile:97: recipe for target 'build/bin-i386/studiomdl' failed
make: *** [build/bin-i386/studiomdl] Error 1

I was able to get it compiling by moving to -ld flag in the compile line to come after the objects (as per this Stack Overflow issue answer.