gcc -o inex-glinfo glinfo.c -O2 -lX11 -O2

/tmp/ccXNE0wK.o: In function `main':
glinfo.c:(.text.startup+0x3c): undefined reference to
`glXChooseFBConfig'
glinfo.c:(.text.startup+0x4a): undefined reference to
`glXGetVisualFromFBConfig'
glinfo.c:(.text.startup+0x86): undefined reference to `glXCreatePixmap'
glinfo.c:(.text.startup+0xa2): undefined reference to
`glXCreateNewContext'
glinfo.c:(.text.startup+0xb0): undefined reference to `glXMakeCurrent'
glinfo.c:(.text.startup+0xc4): undefined reference to `glGetString'
glinfo.c:(.text.startup+0xe2): undefined reference to `glGetString'
glinfo.c:(.text.startup+0x100): undefined reference to `glGetString'
collect2: error: ld returned 1 exit status
make[1]: *** [make] Error 1
make[1]: Leaving directory `/build/buildd/i-nex-0.6.2'
dh_auto_build: make -j1 returned exit code 2
make: *** [build-arch] Error 2
dpkg-buildpackage: error: debian/rules build-arch gave error exit status 2

Makefile

@@ -8,6 +8,7 @@ LSB_CS = $(shell lsb_release -cs)
 CC_OPTS_LIBCPUID = $(shell pkg-config libcpuid --cflags --libs)
 libgl = $(shell pkg-config gl --cflags --libs)
 libx11 = $(shell pkg-config x11 --cflags --libs)
+libxext = $(shell pkg-config xext --cflags --libs)
 GBC = /usr/bin/gbc3
 GBCOPTS = -eagtpmv
 GBA = gba3
@@ -68,7 +69,7 @@ make:
 	$(CC) -o inex-cpuid cpu.c -static $(CC_OPTS_LIBCPUID) $(additional_confflags)
 	$(CC) -o inex-usage free.c -static $(CC_OPTS_LIBPROCPS) $(additional_confflags)
 	$(CC) -o inex-cpusage cpusage.c $(additional_confflags)
-	$(CC) -o inex-glinfo glinfo.c -O2 $(libx11) $(libgl) $(additional_confflags)
+	$(CC) -o inex-glinfo glinfo.c -O2 $(libx11) $(libgl) $(libxext) $(additional_confflags)
 	@printf "\033[1;31mCompile src/i-nex stage 1 \033[0m$1\n"
 	$(GBC) $(GBCOPTS) src/i-nex
 	@printf "\033[1;31mCompile src/i-nex stage 2 \033[0m$1\n"

debian/control

@@ -8,31 +8,22 @@ Build-Depends: debhelper (>= 7),
   python | python-all | python-dev | python-all-dev,
   pkg-config, dpkg-dev (>= 1.14.17),
   debhelper (>= 5.0.0),
-  libcpuid11,
+  libcpuid11, procps,
   libprocps0-dev|libprocps3-dev|libproc-dev,
-  mesa-common-dev,
-  gambas3-dev (>= 3.0.90), 
-  gambas3-dev (<< 3.99.0), 
-  gambas3-gb-image (>= 3.0.90), 
-  gambas3-gb-image (<< 3.99.0), 
-  gambas3-gb-qt4 (>= 3.0.90), 
-  gambas3-gb-qt4 (<< 3.99.0), 
-  gambas3-gb-form (>= 3.0.90), 
-  gambas3-gb-form (<< 3.99.0), 
-  gambas3-gb-desktop (>= 3.0.90), 
-  gambas3-gb-desktop (<< 3.99.0), 
+  libx11-dev,
+  libxext-dev,
+  libgl1-mesa-dev,
+  libglew-dev,
+  libglu1-mesa-dev,
+  libegl1-mesa-dev [linux-any kfreebsd-any],
+  libgles1-mesa-dev [linux-any kfreebsd-any],
+  libgles2-mesa-dev [linux-any kfreebsd-any],
+  gambas3-dev (>= 3.0.90),
+  gambas3-gb-image (>= 3.0.90),
+  gambas3-gb-qt4 (>= 3.0.90),
+  gambas3-gb-form (>= 3.0.90),
+  gambas3-gb-desktop (>= 3.0.90),
   gambas3-gb-form-stock (>= 3.4.0),
-  dpkg (>= 1.15), grep (>= 2.5),
-  mount (>= 2.17),
-  procps,
-  x11-xserver-utils (>= 7.5),
-  lsb-release (>= 4.0),
-  bash (>= 4.1),
-  coreutils (>= 7.4),
-  sed (>= 4.2),
-  pciutils,
-  x11-utils (>= 7.5),
-  mesa-utils (>= 7.6),
   imagemagick
 Standards-Version: 3.9.4
 Vcs-Browser: https://github.com/eloaders/I-Nex